Article
Polymer Science
Thomas J. Neal, Andrew J. Parnell, Stephen M. King, Deborah L. Beattie, Martin W. Murray, Neal S. J. Williams, Simon N. Emmett, Steven P. Armes, Sebastian G. Spain, Oleksandr O. Mykhaylyk
Summary: A series of amphiphilic statistical copolymers were synthesized with varying hydrophilic and hydrophobic components, which self-assembled into well-defined spherical nanoparticles in aqueous solution. The PSC model was used to describe the relationship between copolymer composition and nanoparticle size, while contrast variation small-angle neutron scattering revealed partial phase separation within the nanoparticles. This study demonstrates the potential for using such statistical copolymers to control and predict nanoparticle size in various industrial applications.
Article
Polymer Science
Zhenghui Liu, Yuan Yao, Xinfeng Tao, Jie Wei, Shaoliang Lin
Summary: Imposing chirality to supramolecular architectures is crucial for understanding and utilizing chiral nanomaterials. The self-assembly of amphiphilic chiral copolymers into helical supramolecular rods is achieved through intrachain stacking of chiral units along the main chain. The reversible supramolecular self-assembly retains sublevel chirality even when the helical appearance is destroyed.
Article
Nanoscience & Nanotechnology
Luca Mazzaferro, Samuel J. Lounder, Ayse Asatekin
Summary: The limited chemistries of membranes on the market restrict their applications in various separations. This study introduces a new class of membrane materials based on self-assembly of random polyampholyte amphiphilic copolymers, which exhibit excellent permeability, selectivity, and fouling resistance. The membranes feature ionic nanodomains as nanochannels for water permeation, surrounded by hydrophobic nanodomains to maintain structural integrity. Precise control over selectivity is achieved by designing the copolymers, enabling a wide range of applications in wastewater treatment and chemical separations.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Shankar Dutt, Buddini I. Karawdeniya, Y. M. Nuwan D. Y. Bandara, Nahid Afrin, Patrick Kluth
Summary: In this work, a scalable and controllable method to fabricate thin silicon nitride (SixNy) membranes with effective thickness down to 1.5 nm was presented. Nanopores with estimated pore diameters down to 1.8 nm were also fabricated through a controlled breakdown method. These membranes demonstrated high-performance and extended lifetime in single-molecule sensing of dsDNA and BSA protein. Different compositions of SixNy membranes were compared with commercial membranes, and their properties were characterized using various methods.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Haeri Lee, Jacopo Tessarolo, Daniel Langbehn, Ananya Baksi, Rainer Herges, Guido H. Clever
Summary: Stimuli-responsive coordination cages can reversibly control guest binding and release, which is important for adaptive receptors, carriers, catalysts, and complex systems. A Pd-mediated coordination cage based on a light-switchable ligand is reported, which can achieve reversible conversion through irradiation or thermal relaxation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Polymer Science
Hyun Jin Kim, Fumi Ishizuka, Shunsuke Chatani, Hiroshi Niino, Per B. Zetterlund
Summary: The effect of monomer droplet size on particle formation mechanism in aqueous heterogeneous polymerization was investigated. Different sizes of monomer droplets were used under various mixing methods. It was found that block copolymer micelles formed high order morphologies regardless of the extent of mixing, while monomer droplet nucleation led to the formation of only spherical nanoparticles. The findings suggest that the formation of spherical nanoparticles becomes predominant when the loci of polymerization change to monomer droplets.
Article
Multidisciplinary Sciences
Sanghee Yang, Sung-Yun Kang, Tae-Lim Choi
Summary: The authors have successfully controlled the length of 2D sheets of conjugated polymers by blending, heating, and seeded-growth strategies, providing a new method for preparing semi-conducting two-dimensional polymer nanoobjects.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Xiangyun Xi, Siyu Wan, Yuwei Deng, Yan Xia, Jingyu Xiao, Yangfei Cao, Xianwu Huang, Zhicheng Li, Dong Yang, Angang Dong, Tongtao Li
Summary: A microemulsion-based amphiphilic assembly technique has been developed for the fast and scalable preparation of two-dimensional nanosheets comprising nanocrystals. This method is applicable to a variety of nanocrystals and allows for the coassembly of different types of nanocrystals.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Taiheng Yin, Zihao Yang, Fengfan Zhang, Meiqin Lin, Juan Zhang, Zhaoxia Dong
Summary: Amphiphilic Janus nanosheets spontaneously aggregate at the oil-water interface and exhibit unique mechanical responses under vertical pressure. The morphology of the assembled particle film is controlled by nanosheet concentration, probe wettability, and interface density. The presence of these nanosheets reduces stiffness and enhances flexibility and deformability, resulting in larger deformation under smaller vertical stress.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Shuai Zhang, Jeevapani J. J. Hettige, Yuhao Li, Tengyue Jian, Wenchao Yang, Yun-Chiao Yao, Renyu Zheng, Zhixing Lin, Jinhui Tao, James J. J. De Yoreo, Marcel Baer, Aleksandr Noy, Chun-Long Chen
Summary: Finding a stable and highly selective artificial membrane is crucial for solving global crises such as water scarcity. The co-assembly of carbon nanotube porins (CNTPs) and peptoids into 2D membrane nanosheets offers a promising solution with superior crystallinity and robustness.
Article
Materials Science, Multidisciplinary
Yuwan Wang, Zichun Cui, Hanghang Zeng, Zijie Wang, Xian Zhang, Junqin Shi, Tengfei Cao, Xiaoli Fan
Summary: The study investigates the intrinsic ferromagnetism of 2D materials based on rare earth metal element GdGe2. Monolayer GdGe2 is found to be a ferromagnetic half-semiconductor with a large magnetic moment and an indirect band gap, while the AB-stacking bilayer GdGe2 shows promise as a high Curie temperature half-metal. Stacking order influences interlayer distance and magnetic coupling of multilayer GdGe2, with potential for modulation of electronic structure and magnetic order through interlayer stacking design.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Dezhu Zhang, Kang Huang, Yongsheng Xia, Hongyan Cao, Liheng Dai, Kai Qu, Lan Xiao, Yiqun Fan, Zhi Xu
Summary: In this study, a two-dimensional (2D) MFI-type zeolite membrane with excellent vanadium resistance and proton conductivity was successfully fabricated for high-performance vanadium flow batteries. The battery equipped with the 2D MFI-type zeolite membrane showed longer self-discharge period and stable cycling performance, demonstrating the potential application of 2D MFI-type membranes in stationary electrochemical energy-storage devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Optics
Xiao Zhang, San Ping Jiang, Ping Yang
Summary: Red superior thin carbon nitride (g-C3N4) nanosheets with redshifted absorption spectrum and narrowed bandgap of 1.91 eV were successfully prepared using a molten-salt-assisted route. These nanosheets exhibit bright, stable, and tunable photoluminescence, which depends on the concentration of the nanosheets.
JOURNAL OF LUMINESCENCE
(2021)
Article
Engineering, Electrical & Electronic
Xin Li, Haoran Long, Jiang Zhong, Feng Ding, Wei Li, Zucheng Zhang, Rong Song, Wen Huang, Jingyi Liang, Jialing Liu, Ruixia Wu, Bo Li, Bei Zhao, Xiangdong Yang, Zhengwei Zhang, Yuan Liu, Zhongming Wei, Jia Li, Xidong Duan
Summary: Researchers have developed a one-step chemical vapour deposition method to fabricate nanoplates of a two-dimensional metallic alloy with continuously tunable band alignment. This alloy can serve as contacts for two-dimensional semiconductors, providing improved device performance compared to metal contacts.
NATURE ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Andi Di, Jipeng Xu, Thomas Zinn, Michael Sztucki, Wentao Deng, Anumol Ashok, Cheng Lian, Lennart Bergstrom
Summary: This study presents a time-resolved small-angle X-ray scattering investigation on the co-assembly process of amphiphilic organo-functionalized Wells-Dawson-type polyoxometalate (POM) metal-oxygen clusters with Pluronic block copolymer in aqueous solutions. The study revealed the formation of large vesicles, a lamellar phase, a mixture of two cubic phases, and eventually a hexagonal phase at concentrations above 110 mM.
Article
Chemistry, Multidisciplinary
Wei Luo, Fen Liu, Yaohao Guo, Junjie Qiu, Jinrui Yan, Shuangliang Zhao, Bo Bao
Summary: A liquid-gas heterogeneous microreactor was developed to continuously crystallize dolutegravir sodium, revealing reaction kinetics and mixing mechanism. The reaction kinetics models were established by visually recording the concentration variation of reactants over time. The mixing intensification mechanism of liquid-gas flow was quantified through the fluorescent signal, indicating outstanding mixing performance. Compared with batch crystallization, continuous synthesis in the microreactor optimized crystal distribution size and modified crystal morphology.
CHINESE CHEMICAL LETTERS
(2023)
Article
Polymer Science
Yi Gao, Cuilian Wei, Shuangliang Zhao, Wei Gao, Zequan Li, Hong Li, Jianju Luo, Xianyu Song
Summary: This study reports a one-pot method for preparing a double network hydrogel with excellent mechanical properties and high water retention. It also demonstrates the potential application of the hydrogel in flexible sensors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Multidisciplinary Sciences
Minmin Yan, Zengxi Wei, Zhichao Gong, Bernt Johannessen, Gonglan Ye, Guanchao He, Jingjing Liu, Shuangliang Zhao, Chunyu Cui, Huilong Fei
Summary: The researchers synthesized a material with high-density (10.32 wt%) single atoms of antimony (Sb) on nitrogen- and sulfur-codoped carbon nanofibers using a nanoarchitectured Sb2S3 template. This material exhibited high selectivity (97.2%) and mass activity (114.9 A g(-1)) for the 2e(-) ORR in alkaline electrolyte. Experimental and theoretical calculations showed that the coordination configuration and S dopants contributed to the enhanced activity and selectivity of the material.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Zaiyong Yang, Zhiheng Hao, Shunxin Zhou, Peng Xie, Zengxi Wei, Shuangliang Zhao, Fuzhong Gong
Summary: In this study, Pd-Sn alloy materials loaded in a microchannel reactor were found to exhibit high catalytic activity for the production of hydrogen peroxide, with a productivity of 3124 g kgPd-1 h-1. Doped Sn atoms on the Pd surface facilitated the release of hydrogen peroxide and slowed down the deactivation of catalysts. Theoretical calculations demonstrated the antihydrogen poisoning property of the Pd-Sn alloy surface, showing higher activity and stability compared to pure Pd catalysts. This research provides guidance on preparing high-performance and stable Pd-Sn alloy catalysts for the continuous and direct synthesis of hydrogen peroxide.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jingjing Liu, Zengxi Wei, Zhichao Gong, Minmin Yan, Yongfeng Hu, Shuangliang Zhao, Gonglan Ye, Huilong Fei
Summary: Doping phosphorus into the carbon substrate of a Co-N-C catalyst enhances the catalytic performance for the oxygen reduction reaction (ORR) and improves the selectivity for H2O2 electrosynthesis. The P-doped Co-N-C catalyst shows outstanding ORR activity with an early onset potential, high selectivity, and large turnover frequency in alkaline electrolyte, surpassing previously reported counterparts. In addition, as a gas diffusion layer in a flow cell, the catalyst achieves an unprecedented H2O2 production rate with long-term durability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Chemical
Huikun Zhang, Weiqiang Tang, Peng Xie, Shuangliang Zhao
Summary: This study calculates the free energy profiles and solute-solvent energy pair distribution of the Diels-Alder reaction in pure solvents and mixed solvents using the QM/MM Monte Carlo method. The presence of solvent lowers the reaction free energy barrier, with the barrier in the mixed solvent being intermediate between the two pure solvents. The study also investigates the interactions between reactants and solvent molecules in pure and mixed solvents, providing insights into preferential solvation and competition for reacting sites.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Teng Zhao, Shenggao Zhou, Zhenli Xu, Shuangliang Zhao
Summary: Electric double-layer capacitors (EDLCs) are promising electric energy storage devices for increasing global energy demand. However, the molecular mechanism of temperature variation inside EDLCs during charging-discharging cycles remains unclear. To address this, a theoretical framework is proposed to capture the layering effect of EDL structure on thermal transport in EDLCs. Molecular interactions are considered, and strong temperature oscillation is observed when periodically voltages are applied. Several factors regulating the EDL structure and the local temperature are evaluated. This work provides a molecular perspective into the thermal transport in EDLCs and guides the directional thermal management of electrochemical devices.
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Jiao Lan, Zengxi Wei, Ying-Rui Lu, DeChao Chen, Shuangliang Zhao, Ting-Shan Chan, Yongwen Tan
Summary: Conversion of organic nitrogen compounds into high-value-added products through electrochemical C-N coupling reactions under ambient conditions is a sustainable strategy for achieving carbon neutrality and high-value utilization of harmful substances. In this study, a Ru1Cu single-atom alloy was used to selectively synthesize formamide from carbon monoxide and nitrite, achieving high formamide selectivity with a Faradaic efficiency of 45.65 +/- 0.76% at -0.5V vs. RHE. The use of adjacent Ru-Cu dual active sites enables the spontaneous coupling of *CO and *NH2 intermediates, facilitating high-performance electrosynthesis of formamide. This work provides insights into the electrocatalysis of high-value formamide through the coupling of CO and NO2- under ambient conditions, leading to the synthesis of more sustainable and valuable chemical products.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Muqun Wang, Shaofeng Liang, Shuangliang Zhao, Wei Gao, Zequan Li
Summary: A novel smart-window interlayer material capable of selective shielding against both near-infrared (NIR) and ultraviolet (UV) radiation is developed in this study. It exhibits high specific heat capacity, large thermal storage capacity, and can intelligently adjust the light transmittance according to ambient light intensity. It is cost-effective, easy to prepare, and considered a promising candidate for developing energy-saving and climate-adapted smart windows.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Peng Chen, Zaiyong Yang, Shunxin Zhou, Zengxi Wei, Shuangliang Zhao
Summary: By combining theoretical calculations with experimental characterizations, the impact of catalyst structural evolution on catalytic performance was elucidated, showing that different oxygen concentrations and reactants can lead to changes in both the catalyst and catalytic activity. The experimental findings confirmed the dynamic evolution of the palladium oxide catalyst during the reaction. This study provides a microscopic understanding of the complex catalyst-reactant interaction and catalyst deactivation during hydrogen peroxide synthesis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Ruifeng Wang, Yuchang Liu, Yafen Kong, Peng Xie, Shuangliang Zhao
Summary: By constructing hierarchical structures of SnO/NiCo2O4 with a large number of complex pores on carbon cloth, we have developed highly stable SnO/NiCo2O4/CC catalysts. The presence of solid oxide pairs (Ni3+/Co3+) in the catalysts can protect SnO from being reduced to Sn monomers during the electrocatalytic process, greatly enhancing the stability of the catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Ruifang Shi, Jule Ma, Xianyu Song, Bicai Zhan, Xiaofei Xu, Shuangliang Zhao, Jionghao He
Summary: In this study, the properties of different compositions of styrene-butadiene rubbers (SBRs) and the corresponding interfacial properties of SBR/silica were investigated using atomistic molecular dynamics (MD) simulation and experimental measurements. It was found that a lower content of styrene improves the thermal stability of SBR, and the inclusion of styrene/vinyl leads to an increase in the glass transition temperature (Tg) by restricting the movement of the polymer chain. The presence of phenyl and vinyl side groups affects the interfacial properties and disturbs the ordered distribution of the main chain at the interface. This study provides a fundamental understanding of the relationship between the composition and properties of SBRs and SBR/silica, offering theoretical guidance for the design of SBR and SBR nanocomposites for tire tread applications.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Hongping Yu, Weiqiang Tang, Xiaofei Xu, Shuangliang Zhao
Summary: The study extends the dynamic reaction density functional theory (DRxDFT) to investigate the reaction-diffusion coupling in catalytic nanochannels. By simulating the reaction-diffusion process in a rectangle nanochannel, the predicted steady-state productivities are found to be in excellent agreement with reactive molecular dynamics simulations. The study further analyzes the reaction-diffusion coupling in generic catalytic nanochannels and reveals a generic opposite trend in the effect of nanochannel size on productivity under reaction-dominated and diffusion-dominated conditions. This work provides a microscopic insight into the coupling of reaction and diffusion in nanoconfinement.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Yutong Lin, Weiqiang Tang, Peiwen Xiao, Jule Ma, Xue Han, Xiaofei Xu, Jianhui Luo, Shuangliang Zhao
Summary: Surfactants and salt are commonly used together in chemical flooding processes to reduce interfacial tension (IFT). However, the microscopic mechanism behind their synergistic effect on oil displacement is unclear. Molecular dynamics simulations were used to study the structure and properties of the water-n-dodecane interface, considering different anionic surfactants and salts. The study found that the addition of salt reduces the IFT initially, but later increases it due to the salt screening and ion bridging effects. The study also showed that the number of oxygen atoms in the surfactant headgroup determines the IFT values.
Article
Chemistry, Physical
Teng Zhao, Shuangliang Zhao, Shenggao Zhou, Zhenli Xu
Summary: Cyclic voltammetry (CV) is a powerful technique for characterizing electrochemical properties. Existing theoretical models cannot explain the intrinsic mechanisms accurately. In this study, a new interfacial model based on statistical mechanics is proposed, showing quantitative agreement with experimental results. This work has the potential to advance thermal regulation in next-generation electrochemical devices.
ACS ENERGY LETTERS
(2023)
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)
