Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Siyuan Zhang, Zewen Sun, Yue Zhou, Wenshu Chen, Qianhui Wu, Jianhua Sun, Leiming Lang
Summary: Ag nanoparticles significantly enhance the photocatalytic activity of self-organized TiO2 nanotube structures. In this study, novel Ag/TiO2 tube-in-tube fibers were prepared using a simple electrospinning technology and calcination process. As a photocatalyst, the composite efficiently catalyzes the photodegradation of the model organic pollutant, rhodamine B, under visible light irradiation, showing superior photocatalytic activity compared to undoped TiO2 tube-in-tube fibers. This enhancement is attributed to the plasmonic characteristics of Ag nanoparticles, which promote light absorption and charge transfer feasibility. The simple, low-cost, and green fabrication route of the composite provides a novel means for preparing similar materials, holding great promise for wider application in the future.
Article
Materials Science, Multidisciplinary
V Thongpool, A. Phunpueok, S. Jaiyen, T. Rojviroon
Summary: SiO2-TiO2 nanocomposites prepared by the sol-gel method exhibit superior UV absorption capability and specific surface area, leading to enhanced dye degradation through photocatalytic activity. Among the samples, 0.5SiO2-TiO2 demonstrated the highest dye degradation efficiency.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Jong Won Lee, Sang Hyuk Lee, Young Il Jang, Hee Mun Park
Summary: The research focused on improving concrete block pavements with added TiO2 to reduce air pollution, and found that the use of NST can enhance the photocatalytic performance of TiO2, leading to a decrease in NO and SO2 concentrations.
Article
Materials Science, Ceramics
Chi Congcong, Qu Panpan, Ren Chaonan, Xu Xin, Bai Feifei, Zhang Danjie
Summary: In this study, a multi-layer core-shell structure of SiO2@Ag@SiO2@TiO2 was synthesized as a photocatalyst for the degradation of dye pollutants. The optimal coating effect was achieved by using a mass ratio of AgNO3, TEOS, and TBOT to SiO2 at 5:2.4:6:1, and the core-shell structure showed the best photocatalytic activity. The degradation efficiency of the SiO2@Ag@SiO2@TiO2 photocatalyst was close to 93% after 45 minutes of simulated visible light irradiation, and it maintained a degradation efficiency of 90% after 4 cycles of recycling tests. This research has significant importance for water pollution control.
JOURNAL OF INORGANIC MATERIALS
(2022)
Article
Engineering, Environmental
Umberto Belle, Marzio Invernizzi, Elisa Polvara, Andrea Lucotti, Maria Vittoria Diamanti, Selena Sironi, MariaPia Pedeferri
Summary: In this study, a novel annular plug flow reactor with built-in nanotubular TiO2 obtained via anodizing was tested for photocatalytic degradation of toluene. The system demonstrated high photodegradation efficiency and potential applications in mildly and severely polluted environments. The photocatalyst could regain its initial activity through a simple reactivation process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Xueying Cheng, Renquan Guan, Yunning Chen, Yudan Qian, Qingkun Shang, Yingnan Sun
Summary: In this study, the adsorption and photocatalytic degradation of oxytetracycline (OTC) were investigated using different metal-doped TiO2 nanocatalysts (M-TiO2, M = Fe, Co, Ni, Cr). The effects of different metal dopants on the adsorption and degradation abilities of TiO2 were studied. The photocatalytic performance of Fe-TiO2 was found to be excellent due to the synergy between the separation ability of photogenerated carriers and the adsorption ability of pollutants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Qianqian Hu, Yifan Liu, Weian Li, Yanqi Wang, Wenhua Liao, Hanxun Zou, Jianrong Li, Xiaoying Huang
Summary: This study presents a facile and environmentally friendly method for synthesizing C, N co-doped mesoporous TiO2 nanocrystals, using IL-assisted microwave synthesis, resulting in small-sized TiO2 with well-developed mesoporous structure and abundant C, N dopants. The material exhibits high specific-surface area, excellent hydrophilicity, elevated valence-band edges, abundant defect levels, and narrowed band-gap, leading to improved visible-light absorption, reduced photogenerated electron-hole recombination, and rapid charge transfer and surface-catalyzed reactions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xuhui Feng, Fuping Pan, Peng Zhang, Xiao Wang, Hong-Cai Zhou, Yongheng Huang, Ying Li
Summary: By doping Mg2+, TiO2 photocatalysts exhibited enhanced performance with increased surface Ti3+ generation and transient photocurrent density. Among them, 1MA catalyst showed significantly improved CO production rate compared to commercially available TiO2 nanopowder P25 in CO2 reduction.
Article
Agricultural Engineering
Jilin Zhu, Kuanjun Fang, Weichao Chen, Keqin Liu, Liyuan Sun, Chunming Zhang
Summary: In this study, cotton fabric was coated with a dual-particle coating to achieve superhydrophobic, antibacterial, and photocatalytic properties. The coating, which used polydimethylsiloxane (PDMS) as a binder, consisted of reduced graphene oxide-added titanium dioxide (rGO-TiO2) and quaternary ammonium-functionalized silica (QAS-SiO2) at the appropriate mass ratio. The coated fabric showed high water contact angles, strong bactericidal effects, and high degradation rates. It also demonstrated excellent durability against washing, abrasion, acid/base exposure, and UV rays. The coating did not affect the fabric's strength or deformability. Moreover, the coating method can be applied to various materials, making it eco-friendly and highly feasible for a wide range of applications.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Physical
Hengjun Gai, Haozhong Wang, Lei Liu, Bingxiao Feng, Meng Xiao, Yubao Tang, Xiaofei Qu, Hongbing Song, Tingting Huang
Summary: The codoped potassium and iodide mesoporous titanium dioxide shows excellent photocatalytic activity and stability, with improved light absorption and charge separation efficiency. The doping also enhances specific surface area, adsorption capacity, and active site exposure for pollutant degradation. The material exhibits perfect acid and alkali resistance under simulated sunlight.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Composites
Qinggang Fan, Tao Wang, Wei Fan, Lin Xu
Summary: Tubular Au/TiO2/SiO2 ternary nanocomposite with high-temperature ablation and noble metal deposition was successfully fabricated. SiO2 deposition inhibits the growth of TiO2 grain size, and the tubular structure effectively improves the utilization of visible-light. Au nanoparticles absorb visible-light, promote the formation of photogeneration-hole pairs, and act as an electron acceptor to delay the recombination rate of photogeneration electron-hole pairs, thereby improving the photocatalytic activity. Moreover, the composite gel of polyvinyl alcohol/polyvinylpyrrolidone (PVA/PVP) used for loading and immobilizing TiO2-based catalytic materials exhibits good photocatalytic activity and recyclability.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Congcong Wei, Wei Zhang, Xinpeng Wang, Aihong Li, Jianping Guo, Bo Liu
Summary: The g-C3N4/TiO2 photocatalysts with mesoporous structure and intimate interfacial connection were synthesized through facile pyrolysis, exhibiting significantly improved photocatalytic activity. The enhancement was primarily attributed to the synergistic effect between large specific surface area, decreased energy band gap, and intimate interface contact.
Article
Engineering, Chemical
Lucia del C. Cid, Claudia M. C. Vera, Patricio A. Sorichetti
Summary: This work presents a model of an annular batch slurry photocatalytic reactor using titanium dioxide at high concentrations and near-neutral pH. The model considers factors such as catalyst particle agglomeration and adsorption/desorption equilibrium, and was validated with measurements and simulations to find optimal design criteria at high catalyst concentrations. The mathematical model is simple and robust, suitable for design and scaling of photocatalytic reactors.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Danny Zanardo, Giulia Forghieri, Sebastiano Tieuli, Elena Ghedini, Federica Menegazzo, Alessandro Di Michele, Giuseppe Cruciani, Michela Signoretto
Summary: This study investigated two silica-based materials with different porosity levels as supports for titanium dioxide in gas-phase CO2 photoreduction. The TiO2-SiO2 composites demonstrated comparable catalytic activity to pure TiO2, despite a low fraction of photoactive phase, due to improved light harvesting and reagents adsorption.
Review
Chemistry, Physical
Fuwei Xiang, Fang Cheng, Yongjiang Sun, Xiaoping Yang, Wen Lu, Rose Amal, Liming Dai
Summary: This article comprehensively reviews the fundamentals and recent progresses of flexible batteries in terms of battery constituent components, chemistry systems, device configurations, and practical applications. The current challenges and future opportunities for the research and development of flexible batteries are also discussed.
Article
Chemistry, Physical
Huabo Liu, Jiaxing Liang, John Watt, Richard D. Tilley, Rose Amal, Da-Wei Wang
Summary: In this study, a facile and scalable electrochemical deposition method for synthesizing quasi-layered conductive organic-inorganic hybrid films with controllable thickness and size was demonstrated. The films exhibited high gravimetric density and excellent capacitance performance, suggesting their great potential for electrochemical energy storage applications. The charge storage mechanism of the films was identified to be ion intercalation accompanied by change in oxidation states of the polymer backbone.
Article
Chemistry, Multidisciplinary
Zeheng Lin, Qingran Zhang, Jian Pan, Constantine Tsounis, Ali Asghar Esmailpour, Shibo Xi, Hui Ying Yang, Zhaojun Han, Jimmy Yun, Rose Amal, Xunyu Lu
Summary: A hierarchical porous free-standing ORR electrode comprising cobalt single atoms on vertically aligned graphene nanosheets is demonstrated to achieve high H2O2 productivity. The electrode exhibits close to 100% H2O2 selectivity in an H-cell setup and achieves high peroxide concentration and low energy consumption in a gas-diffusion flow reactor.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Zhao Yang Dong, Jiajia Yang, Li Yu, Rahman Daiyan, Rose Amal
Summary: This study introduces the concept of hydrogen credit and establishes a trading framework for hydrogen credits in the international market, aiming to promote the global adoption and market development of green hydrogen through financial means. Case studies demonstrate the feasibility of this framework and the potential of a global hydrogen credit market.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Ding Zhang, Constantine Tsounis, Zhipeng Ma, Dominique Djaidiguna, Nicholas M. Bedford, Lars Thomsen, Xunyu Lu, Dewei Chu, Rose Amal, Zhaojun Han
Summary: A metal-free edge-rich vertical graphene catalyst has been synthesized and exhibits superior performance for hydrogen peroxide production in alkaline media. By tailoring oxygen-containing functional groups and developing a vacuum-based method to enhance surface wettability, gas diffusion rate has been greatly improved without compromising Faradaic efficiency.
Article
Chemistry, Physical
Wibawa Hendra Saputera, Tze Hao Tan, Emma C. Lovell, Aditya Rawal, Kondo-Francois Aguey-Zinsou, Donia Friedmann, Rose Amal, Jason A. Scott
Summary: Binary TiO2/SiO2 oxides were synthesized as supports for a Pt catalyst, with varying mole ratios of silica. Increasing the TiO2 : SiO2 ratio led to changes in specific surface area, crystal structure, and defect sites, affecting the catalytic performance for formic acid oxidation under dark conditions and following UV light pre-treatment. The Pt/1TiO(2)-2SiO(2) catalyst exhibited the highest catalytic rate, attributed to the simultaneous presence of PtOads and defect sites following UV-light pre-treatment.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Emma C. Lovell, Jason Scott, Nicholas M. Bedford, Tze Hao Tan, Patrick J. Cullen, Kostya Ken Ostrikov, Rose Amal
Summary: This article discusses the development trend of hybrid catalytic systems, highlighting the need to consider certain issues when designing hybrid energy systems and proposing measures to promote a leap forward in catalyst design.
ACS ENERGY LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Fran Kurnia, Jason A. Scott, Nagarajan Valanoor, Judy N. N. Hart
Summary: The review discusses the progress made in developing non-oxide semiconductor materials for efficient hydrogen production through the process of photoelectrochemical (PEC) water splitting. It highlights the design and engineering of new and existing non-oxide semiconductors as viable photoelectrodes. The review also addresses the challenge of stability in harsh electrolyte conditions and outlines future directions in the development of next-generation photoactive materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Qiyuan Li, Lixue Jiang, Gan Huang, Da-Wei Wang, Jack Shepherd, Rahman Daiyan, Christos N. Markides, Robert A. Taylor, Jason Scott
Summary: A solar-driven system is proposed for hydrogen production from waste biomass with low carbon and water footprints. The system consists of a waste biomass concentrator, a biomass preconditioning reactor integrated with hybrid PV-thermal collectors, and a flow electrolysis cell equipped with a high-performance electrode. The system achieved an overall solar-to-hydrogen efficiency of 7.5% and also produced clean water and a value-added chemical by-product. This work presents a new route towards efficient and economically feasible renewable hydrogen production.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Environmental
Timothy Zurrer, Emma Lovell, Zhaojun Han, Kang Liang, Jason Scott, Rose Amal
Summary: In this study, NiMg-CUK-1 metal-organic framework is used for the sequential capture and conversion of CO2 to methane. By tuning the Ni:Mg ratio and treatment temperature, optimized catalytic performance and CO2 capture functionality of the MOF are achieved. The introduced approach combines CO2 capture and conversion using a single dual-functional material capable of low-temperature CO2 desorption and CH4 production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Yi Fen Zhu, Bingqiao Xie, Rose Amal, Emma C. Lovell, Jason Scott
Summary: The valorization of carbon dioxide (CO2) to light olefins using sustainable energy input is of great industrial significance. Utilizing solar energy through light-capturing catalytic materials can reduce external heat requirements. This article explores the potential for producing multifunctional, light-responsive catalysts suitable for CO2-Fischer-Tropsch synthesis (FTS), discussing the chemical mechanisms and strategies for catalyst design, the adaptation of encapsulated structures in CO2-FTS, and the application of thermal-assisted photocatalytic systems for CO2 conversion.
Article
Chemistry, Multidisciplinary
Timothy Zurrer, Emma Lovell, Zhaojun Han, Kang Liang, Jason Scott, Rose Amal
Summary: This study developed a metal-organic framework (MOF) material loaded with Ru and Ni nanoparticles for the capture and conversion of CO2 to CH4. Low nanocatalyst loadings improved overall performance and facilitated complete CO2 release and conversion. Ru-loaded Mg-CUK-1 exhibited good oxygen tolerance, while Ni-loaded Mg-CUK-1 could not maintain initial catalytic performance. Ru aided the re-reduction of NiO to Ni, leading to enhanced overall performance of the hybrid material.
Article
Biochemistry & Molecular Biology
Denny Gunawan, Cui Ying Toe, Kaiwen Sun, Jason Scott, Rose Amal
Summary: Photoreforming is an efficient method to produce H2 and value-added chemicals. Selection and design of an appropriate photocatalyst is essential for the process. Carbon nitride with in situ photodeposited Ni cocatalyst can improve carrier dynamics and enhance the efficiency of ethanol photoreforming.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
Article
Engineering, Environmental
Cui Ying Toe, Jian Pan, Jason Scott, Rose Amal
Summary: This article discusses and evaluates the design and scale-up of photocatalytic reactors from an economic perspective. It finds that a photocatalytic slurry system is more cost-effective in producing H-2 fuel compared to a panel photoreactor system. It also suggests that increasing photon conversion efficiency and considering factors such as photocatalyst reusability and cost reduction can significantly impact the overall cost.
ACS ES&T ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Cui Ying Toe, Marlene Lamers, Thomas Dittrich, Hassan A. Tahini, Sean C. Smith, Jason Scott, Rose Amal, Roel van de Krol, Fatwa F. Abdi, Yun Hau Ng
Summary: The intrinsic carrier dynamics and defect density of cuprous oxide have been found to have a decisive influence on the photocatalytic activity. Specifically, the rhombic dodecahedral structure of Cu2O with dominant {110} facets exhibits higher carrier mobility and better charge separation efficiency compared to the cubic structure with {100} surfaces. The results suggest that facet-dependent properties play a crucial role in determining the photoactivity.
MATERIALS ADVANCES
(2022)
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)