Article
Energy & Fuels
Licheng Liang, Linyan Bian, Yanping Fan, Shuyan Guan, Xianyun Liu, Qunying Sun, Baozhong Liu
Summary: Efficient catalysts are essential for sustainable utilization of hydrogen energy. Ru/Ti3C2-xNx catalysts were designed using N-doped two-dimensional material MXene as support for hydrogen generation from ammonia borane hydrolysis. The catalysts exhibited ultrafine particle size and high turnover frequency, attributed to the confinement and anchoring effects of Ti3C2-xNx. XPS and isotope experiments confirmed the role of N atoms in promoting the reaction and identified the rate-determining step as H2O dissociation. This research provides a strategy to enhance the catalytic performance of heterogeneous catalysts through N-doping.
Article
Environmental Sciences
Yujie Feng, Wen Li, Jingkun An, Qian Zhao, Xin Wang, Jia Liu, Weihua He, Nan Li
Summary: This review focuses on the potential of carbon-based materials, particularly graphene and its derivatives, as noble-metal-free catalysts for the two-electron pathway of oxygen reduction reaction (ORR) to produce hydrogen peroxide (H2O2) in electrochemical systems. It discusses the functions of graphene family in accelerating electron transfer and increasing oxygen transfer for cathodes, aiming to reveal the enhancement mechanisms for H2O2 production. The challenges and prospects for the future use of graphene family as catalysts for H2O2 production are also proposed in this review.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Muraleedharan Sheela Meera, Anaswara Anil, Thaju Chithrajakumary Bhagya, Saithathul Fathima Sameera, Radhamony Remya, Sheik Muhammadhu Aboobakar Shibli
Summary: This study reports the application of an efficient photocatalytic ternary composite in the form of a coating formed from CoO/rGO and Ni2P. The CoO/rGO acts as an efficient conducting material and enriches the catalytically active sites in the Ni2P surface. The composite coating exhibits benchmark performance for solar-driven hydrogen generation with excellent stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yahao Li, Changzhi Ai, Shengjue Deng, Yadong Wang, Xili Tong, Xiuli Wang, Xinhui Xia, Jiangping Tu
Summary: The study introduces a strategy to synthesize nitrogen doped vertical graphene (N-VG) array for catalyzing hydrogen evolution reaction (HER) in acidic electrolyte, demonstrating enhanced HER performance due to the introduction of N heteroatom leading to increased surface area and optimized electronic structure. Additionally, two possible enhancement mechanisms of N-VG are revealed with first-principle calculations, confirming the effectiveness of N doping in improving HER performance.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Biochemistry & Molecular Biology
Natalia Kulischow, Mirco Ade, Morten Weiss, Roland Marschall
Summary: Nitrogen-doped wide band gap semiconductor niobate photocatalysts with Dion-Jacobson layered perovskite structure were prepared via a simple gas-solid reaction, extending their absorption into the visible light range. The addition of carbonates during the reaction proved advantageous for maintaining the photocatalytic activity of the nitrogen-doped materials.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
Article
Chemistry, Physical
T. C. Bhagya, S. Arunima Rajan, S. M. A. Shibli
Summary: The influence of Sn dopant on the photocatalytic performance of Iron/Titanium nano composite for hydrogen generation by water splitting reaction was investigated. The results showed that Sn4+ doping enhanced charge separation efficiency, prolonged carrier lifetime, and improved quantum efficiency of the photocatalyst. The presence of heterojunctions between hematite and anatase-rutile mixed phase due to tin doping facilitated the increased hydrogen generation activity of the photocatalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Tong Wu, Jing Hong, Zhenwu Lu, Haiyang Wu, Chenzhi Wu, Zhenbin Tang, Xiaohui Liu, Birong Zeng, Yiting Xu, Guorong Chen, Conghui Yuan, Lizong Dai
Summary: A coordinative strategy was utilized to introduce ruthenium into nitrogen, boron co-doped carbon nano materials, resulting in high hydrogen evolution reaction activity in both alkaline and acidic conditions. The Ru-NBCs exhibited excellent HER properties with low overpotentials and high mass activity when compared to commercial Pt/C. This strategy shows promising application in the design of high performance metal-incorporated doped carbon materials.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Jun-Xi Wu, Partha Pratim Bag, Yan-Tong Xu, Li Gong, Chun-Ting He, Xiao-Ming Chen, Jie-Peng Zhang
Summary: A new type of catalyst support using hydrogen-bonded ultrathin nanosheets was developed, demonstrating high stability and electron modulation effects. This pseudo-porous catalyst support also showed potential for application in other metal phosphides.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Wei Wang, Tao Li, Sridhar Komarneni, Xin Lu, Baojiang Liu
Summary: This review focuses on the recent progress of highly efficient Co-based co-catalysts for water splitting, emphasizing the structure-activity relationships and discussing the co-catalytic reactivities of various Co-based materials when coupled with host semiconductors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Guoan Wang, Tingting Huo, Quanhua Deng, Fei Yu, Yuguo Xia, Haiping Li, Wanguo Hou
Summary: This study demonstrates the creation of abundant surface oxygen vacancies (Ov) in Bi(2)MoO(6) through surface-layer Br doping, leading to the formation of surface/inside homojunction. The resulting BMO-Br-Ov photocatalyst exhibits significantly enhanced N-2 chemisorption and activation, photoinduced charge separation, and photocatalytic N-2 fixation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Engineering, Chemical
Tanzim Ur Rahman, Hridoy Roy, Athkia Fariha, Afrina Zaman Shoronika, Md. Rashid Al-Mamun, Syed Z. Islam, Md. Shahinoor Islam, Hadi M. Marwani, Aminul Islam, Abdulmohsen K. D. Alsukaibi, Mohammed M. Rahman, Md. Rabiul
Summary: In recent years, research on solar energy-driven photocatalysis materials has gained significant attention due to their potential in addressing the global energy and environmental crisis. However, many semiconductor photocatalysts have a wide band gap, limiting their ability to absorb visible light. Incorporating dopants through plasma-based doping is a highly efficient approach to reduce the band gap and enhance visible light absorption. Plasma-based doping offers advantages such as high reactivity, simplicity, scalability, energy efficiency, homogeneous doping, and flexibility in gas and liquid phase operations. This review discusses recent advancements in plasma-doped semiconductor photocatalysts, their fundamental mechanisms, and their performance in energy and environmental applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Lei Dai, Peng Fu, Jieming Chen, Fazhe Sun
Summary: By regulating the N element, the band gap width of TiO2 can be changed, and an impurity band gap can be induced below the TiO2 conduction band. The 300-N-T catalyst exhibited the best photocatalytic hydrogen production performance under visible light, which was 307.65 mmol/(g$h) and was 61.53 times higher than that of anatase. The concentration of Ti3+ defects and oxygen vacancy in TiO2 decreased with decreasing N content.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Xiao Han, Fei Zhao, Qianqian Shang, Jinsheng Zhao, Xiujuan Zhong, Junhong Zhang
Summary: Covalent organic frameworks (COFs), particularly keto-amine-linked COFs, with advantages such as adjustable bandgaps, pi-pi stacking structure, excellent response ability to visible light, have potential applications in photocatalytic solar energy conversion and hydrogen production. By introducing peripheral nitrogen atoms, the absorption range of light is extended, surface area is enlarged, and the separation and transportation efficiencies of charge carriers are enhanced, ultimately boosting the visible-light induced hydrogen evolution reaction (HER).
Article
Chemistry, Physical
Nargiz Kazimova, Kefeng Ping, Mahboob Alam, Mati Danilson, Maido Merisalu, Jaan Aruvali, Paarn Paiste, Maike Kaarik, Valdek Mikli, Jaan Leis, Kaido Tammeveski, Pavel Starkov, Nadezda Kongi
Summary: The study demonstrates that shungite can serve as an efficient support for bifunctional electrocatalysts, and through screening various combinations of cobalt, iron, and nitrogen sources, the most suitable system for serving as an active bifunctional oxygen electrocatalyst material was identified.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Binfeng Shen, Huajie Huang, Huan Liu, Quanguo Jiang, Haiyan He
Summary: A bottom-up construction method was used to create 3D hybrid architectures of Ti3C2Tx MXene and nitrogen doped graphene nanosheets, which demonstrated exceptional performance in electrocatalytic hydrogen evolution. The architectures showed distinctive structural advantages and outperformed bare Ti3C2Tx and NG electrodes in terms of low onset potential, small Tafel slope, and long-term stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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, Inorganic & Nuclear
Ekaterina A. Shirokova, Alexey G. Razuvaev, Alexey Mayorov, Balint Aradi, Thomas Frauenheim, Stanislav K. Ignatov
Summary: The effect of hydrogen bond network isomerism on the thermodynamic functions and concentrations of water clusters in the gas phase was studied using various computational methods. The results showed that considering the orientational isomerism significantly affects the gas-phase concentrations of water clusters and the estimates of their binding enthalpy. This research highlights the importance of studying the structural and thermodynamic properties of water clusters for understanding the impact of hydrogen bond network isomerism.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yanjie Wang, Cheng Tang, Min Su, Yixiong Ji, Lei Xie, Qi Yang, Aijun Du, Yong Zhou, Jun Yang
Summary: A novel flexible gas sensor based on bismuth selenide nanoplates was proposed for sensitive NO2 detection at room temperature. The sensor exhibited favorable sensing performance, including remarkable selectivity, high response, fast response time, ultralow detection limit, and nice stability. The research also revealed the insights of extraordinary NO2 selectivity and the underlying gas-sensing mechanism through first-principles calculation.
CHINESE CHEMICAL LETTERS
(2023)
Review
Energy & Fuels
Wahyu Prasetyo Utomo, Hao Wu, Yun Hau Ng
Summary: Nitrogen reduction reaction (NRR) and nitrate reduction reaction (NO3-RR) offer a sustainable method to produce ammonia, a next-generation energy carrier. Despite advancements in material design and catalytic performance improvement, the production of ammonia remains limited due to potential biases caused by interferants, solution pH, and improper analytical procedures. Therefore, selecting an appropriate quantification method and following proper analytical procedures are crucial. This review summarizes state-of-the-art ammonia quantification methods, highlighting their advantages, limitations, and practicality for NRR and NO3-RR studies, and provides considerations for method selection and implementation to ensure reliable results.
Article
Chemistry, Multidisciplinary
Xin Wang, Zhelin Mao, Xin Mao, Ximiao Hu, Feiyue Gao, Minrui Gao, Qi-Long Wu, Xiao Lyu, Aijun Du, Xiangsheng Xu, Yi Jia, Lei Wang
Summary: The bottleneck of large-scale implementation of electrocatalytic water-splitting technology is the lack of inexpensive, efficient, and durable catalysts for accelerating the sluggish oxygen evolution reaction kinetics. This study reports the activation and stabilization of cobalt telluride (CoTe) nanoarrays for the oxygen evolution reaction (OER) through dual integration of sulfur (S) doping and surface oxidization. The synthesized CoO@S-CoTe catalyst exhibits superior OER performance compared to commercial RuO2 and other reported telluride-based OER catalysts, with a low overpotential and long-term stability.
Article
Chemistry, Multidisciplinary
Zhen Tong, Yatian Zhang, Alessandro Pecchia, ChiYung Yam, Liujiang Zhou, Traian Dumitrica, Thomas Frauenheim
Summary: Using a thermal transport model based on density functional theory, researchers found that the recently synthesized nitride perovskite LaWN3 has strong anharmonic lattice dynamics, resulting in low lattice thermal conductivity and a non-standard temperature-dependent thermal conductivity. At high temperatures, the heat carrying phonons show dual particle-wave behavior, including vibrations tied to the N atoms. While the room temperature heat transport is mainly particle-like, there is also a significant wave-like phonon tunneling effect, contributing to a glass-like heat transport. The low lattice thermal conductivity and weak temperature dependence suggest potential applications in energy technology.
Article
Chemistry, Multidisciplinary
Huijun Zhao, Yujie Xiong, Aijun Du, Wanbing Gong, Xin Mao, Jifang Zhang, Haimin Zhang, Yue Lin
Summary: A facile reductive pyrolysis approach was used to synthesize NiCo alloy nanoparticles supported on N-doped carbon nanotubes (N-CNTs) for electrocatalytic reactions. These NiCo@N-CNTs demonstrated excellent stability, selectivity, and efficiency in the production of precious azoxybenzene compounds. This research has great significance in various industries.
Article
Chemistry, Multidisciplinary
Ling Yuan, Chaoqi Zhang, Yingying Zou, Tong Bao, Jing Wang, Cheng Tang, Aijun Du, Chengzhong Yu, Chao Liu
Summary: Constructing MOF-on-MOF heterojunction with elaborate charge transfer and interface can greatly enhance the photocatalytic properties of MOFs. In this study, a Step-scheme (S-scheme) MIL125-NH2@CoFe Prussian blue analogue (PBA) heterojunction was reported for the first time. The designed MOF-on-MOF heterojunction demonstrated significantly enhanced photocatalytic activity for degrading various organic pollutants, which was attributed to the internal electric field and increased active site exposure.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Xuelian Wu, Hui Ling Tan, Chaohua Zhang, Zhenyuan Teng, Zailun Liu, Yun Hau Ng, Qitao Zhang, Chenliang Su
Summary: Bi-based layered materials have great potential in constructing ultrathin 2D structures, which improve the photocatalytic performance of semiconductors. The 2D configuration of Bi-based photocatalysts offers advantages like large surface area, short charge migration distance, and abundant reactive sites. This review focuses on the synthesis techniques and properties of 2D Bi-based photocatalysts, as well as their potential applications in various photocatalytic reactions. Strategies for enhancing solar energy conversion efficiency on ultrathin Bi-based photocatalysts are also discussed.
PROGRESS IN MATERIALS SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Yang Ding, Chun-Hua Wang, Jia-Song Zhong, Qi-Nan Mao, Run-Tian Zheng, Yun Hau Ng, Ming-Hui Sun, Soumyajit Maitra, Li-Hua Chen, Bao-Lian Su
Summary: Due to their unique characteristics, three-dimensionally ordered macroporous (3DOM) materials have been widely used in environmental fields such as pollutants removal, environmental detection, and bacterial disinfection. This review comprehensively presents the latest 3DOM materials, synthesis methods, and their applications in photoelectrocatalytic pollutants decomposition, VOCs elimination, hazardous substances sensing, and bacteria inactivation. The advantages and mechanisms of 3DOM materials in different environmental applications are thoroughly demonstrated and summarized. The review also discusses the improved performance and methods of fabricating 3DOM materials, providing readers with fundamental knowledge and inspiring innovative thoughts for further enhancing their environmental remediation capability. Lastly, the current challenges and prospects of large-scale and commercial applications of 3DOM materials are discussed.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ru Feng, Hanqing Yin, Fuhao Jin, Wei Niu, Wanting Zhang, Jingquan Liu, Aijun Du, Wenrong Yang, Zhen Liu
Summary: This study demonstrates that NbB2 nanoflakes exhibit excellent selectivity and durability in ambient electrochemical N-2 reduction reaction, leading to efficient NH3 production. The high selectivity is attributed to the presence of abundant active vacancies on the surface, which makes the N-N triple bonds in N-2 molecule easier to break for NH3 production.
Article
Chemistry, Physical
Mingzhu Jin, Shuang Wu, Aijun Du, Jianfen Fan, Qiao Sun
Summary: This study presents a new approach for the electrochemical synthesis of urea by loading tri-metallic atoms on graphdiyne. The tri-metallic Mo-embedded graphdiyne (Mo-3@GDY) catalyst exhibited high efficiency in urea synthesis. The co-adsorption of N-2 and CO on Mo-3@GDY was found to be beneficial for the formation of the urea precursor *NCON.
Article
Chemistry, Multidisciplinary
Tianwei He, Youchao Kong, Tong Zhou, Jin Zhang, Alain R. Puente Santiago, Aijun Du, Rafael Luque, Qingju Liu
Summary: A systematic investigation of 20 transition metal atoms coordinated with 20 different microenvironments in a boroncarbon-nitride monolayer was conducted. It was discovered that specific single-atom coordination environments can achieve superior stability and selectivity for different electrocatalytic reactions. A universal descriptor to accelerate the experimental process for synthesizing BCN-SACs was also reported.
Article
Chemistry, Multidisciplinary
Mehri Ghasemi, Xuemei Li, Cheng Tang, Qi Li, Junlin Lu, Aijun Du, Jaeho Lee, Dominique Appadoo, Luiz H. G. Tizei, Sang T. Pham, Lianzhou Wang, Sean M. Collins, Jingwei Hou, Baohua Jia, Xiaoming Wen
Summary: By embedding mixed-halide perovskites in a glassy metal-organic framework, stable nanocomposites with tunable emission are created. The halide composition directly influences the emission energy at the nanoscale. The composite effectively inhibits halide ion migration and phase segregation, paving the way for stable and high-performance optoelectronics.
Article
Materials Science, Multidisciplinary
Yulong Wang, Zhenyi Jiang, Xiaodong Zhang, Jiming Zheng, Aijun Du
Summary: High pressure technology is effective in studying the Mott or Peierls phase transition from insulator to metal phase. The existence of such transition in ambient M1/R the high-pressure X phase for bulk VO2 is still unclear. This study used first-principles calculation to investigate the PT paths of the M1 semimetallic X and metallic R semimetallic X phases.
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)
