Article
Energy & Fuels
Defang Liang, Yishuang Wang, Mingqiang Chen, Xuanlan Xie, Chang Li, Jun Wang, Liang Yuan
Summary: In this study, modified Ni/attapulgite catalysts with different Mn contents were prepared and applied in dry reforming of methane (DRM). The results showed that Mn content could change the distribution among metal sites, interface sites and oxygen vacancies in the catalysts. The N3M/A catalyst exhibited well-dispersed metallic Ni and MnOx species, forming abundant Ni-MnOx interfaces that enhanced the CH4 adsorption/activation and inhibited the sintering and oxidation of metallic Ni sites. It also had superior surface oxygen vacancies and medium CO2 adsorption sites, facilitating the adsorption/activation of CO2 and carbon removal ability.
Article
Chemistry, Physical
Yiru Mao, Lizhi Zhang, Xiangjuan Zheng, Wenming Liu, Zhihua Cao, Honggen Peng
Summary: In this study, a series of bimetallic RhNi catalysts supported on MgAl2O4 were synthesized and used for low-temperature biogas dry reforming. The results showed that the RhNi catalyst achieved high conversion rates of CH4 and CO2 at low reaction temperature (600 degrees C) without carbon deposition. The enhanced coking resistance was attributed to the addition of Rh, which efficiently suppressed carbon formation, and the high surface areas of the MgAl2O4 support, which promoted CO2 adsorption and activation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Marco Pizzolato, Giulia Da Pian, Elena Ghedini, Alessandro Di Michele, Federica Menegazzo, Giuseppe Cruciani, Michela Signoretto
Summary: The effects of vanadium promotion on gamma-alumina supported nickel catalysts for methane dry reforming were investigated. The introduction of vanadium was crucial to hinder catalyst deactivation by coke deposition. The formation of nanotubes was reduced and hydrogen yield increased. When coupled with calcium, selectivity toward hydrogen/syngas production was improved. Under concentrated gases, vanadium was fundamental for a higher activity, with an increase of 30% and 15% in CH4 and CO2 conversions compared with the non-doped catalyst.
Article
Chemistry, Physical
Jiawei Hu, Plaifa Hongmanorom, Vladimir V. Galvita, Zhan Li, Sibudjing Kawi
Summary: The research focuses on the development of a bifunctional Ni-Ca based material to enable isothermal capture and release of CO2, as well as in-situ conversion of CH4 into syngas in a single reactor. The addition of CeO2 helps combat inactive carbon accumulation and activate CO2 and CH4, leading to enhanced syngas production during cyclic CaLDRM. The bifunctional material successfully converts over 40% of CH4 and CO2 under thermodynamically unfavorable conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yadong Wang, Qing Hu, Ximing Wang, Yanpeng Huang, Yuanhao Wang, Fenghuan Wang
Summary: This study focused on the preparation of the Ni/CeO2-M catalyst with higher CO2 conversion and better stability for DRM reaction. Through a series of characterizations, the structure and mechanism of the catalyst were revealed to tackle the deactivation issue caused by carbon deposition and metal sintering.
Article
Engineering, Environmental
J. J. Torrez-Herrera, S. A. Korili, A. Gil
Summary: This study successfully synthesized platinum-nickel/lanthanum hexaaluminates catalysts and demonstrated their excellent stability and catalytic activity in the dry reforming of methane reaction. The synthesized catalysts showed high catalytic activity and good stability after 50 hours of reaction. The presence of Pt improved the resistance to coke formation of the catalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yuxiao Dai, Rui Zou, Teer Ba, Jie Zhang, Chang-jun Liu
Summary: By decomposing nickel precursor with dielectric barrier discharge plasma, the activity of ceria-zirconia solid solution supported nickel catalysts can be improved, resulting in smaller nickel nanoparticles, higher reducibility, more basic sites, and oxygen vacancies. This leads to enhanced activation of CO2 for reforming and improved coke resistance.
JOURNAL OF CO2 UTILIZATION
(2021)
Review
Chemistry, Multidisciplinary
Luqmanulhakim Baharudin, Norhasyimi Rahmat, Nur Hidayati Othman, Nilay Shah, Syed Shatir A. Syed-Hassan
Summary: This article reviews the deactivation mechanisms of Ni-based catalyst in dry reforming of methane (DRM) due to carbon deposition and other carbon-induced factors, and provides perspectives on controlling and mitigating these deactivation problems through manipulation of reaction conditions and process parameters, as well as the design and development of highly active coke-resistant Ni-based catalysts.
JOURNAL OF CO2 UTILIZATION
(2022)
Review
Chemistry, Physical
Evandro Alves Nakajima, Ligia Gomes Oliveira, Lazaro Jose Gasparrini, Guilherme Emanuel de Queiros Souza, Antonio Augusto Ignacio, Helton Jose Alves, Carlos Eduardo Borba
Summary: This article investigates the kinetic model for dry methane reforming using Ni/Si-MCM-41 catalysts, with the single-site reversible Langmuir-Hinshelwood model showing the best fit among six models tested. The higher temperatures and lower flow rates resulted in increased methane conversion and hydrogen production, with methane conversions over 85% and H2/CO ratio near 1. The activation energy for the best model was estimated to be 76.6 kJ/mol, demonstrating its potential for mathematical modeling in reactor simulation for syngas or hydrogen-rich gas production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Robert Franz, Donato Pinto, Evgeny A. Uslamin, Atsushi Urakawa, Evgeny A. Pidko
Summary: This study investigates the use of Ni/Al2O3 catalysts for dry reforming of methane, with a focus on the effects of different promoters on catalyst stability. Higher iron loading on the catalyst leads to lower coke formation during dry reforming. Additionally, promoters with high CO2 affinity can accelerate catalyst oxidation during regeneration, ultimately leading to sintering and increased coke formation. Promoters with significant CO2 interaction are more effective on sintered catalyst samples compared to unpromoted Ni/Al2O3.
Review
Chemistry, Physical
Fariborz Sharifianjazi, Amirhossein Esmaeilkhanian, Leila Bazli, Sara Eskandarinezhad, Samad Khaksar, Parisa Shafiee, Mohammad Yusuf, Bawadi Abdullah, Peyman Salahshour, Farnaz Sadeghi
Summary: This paper reviews the recent advances in Ni- and Co-based nanocatalysts for dry reforming of CH4, including the use of different supports, promoters, and new structures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
Nouf A. Bamatraf, Salwa B. Alreshaidan, Ahmed A. Ibrahim, Anis H. Fakeeha, Ahmed E. Abasaeed, Abdulaziz A. M. Abahussain, Mohammed F. Alotibi, Abdulaziz A. Bagabas, Ahmed S. Al-Fatesh
Summary: This study investigates the impact of calcination temperature on the catalytic performance of Ni catalysts supported on different materials. The results show that the calcination temperature strongly influences the catalyst activity, with higher temperatures resulting in lower activity. The Al2O3-supported catalyst exhibits the highest surface area, metal-support interaction, and activity.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Energy & Fuels
Junjie Wen, Yu Xie, Yanping Ma, Haiyang Sun, Huimin Wang, Mo Liu, Qiulin Zhang, Jianjun Chen
Summary: Ni-CeZrAl catalyst prepared by co-precipitation method demonstrated high performance in dry reforming of methane, with the highest methane conversion reaching 38.1%. The superior catalytic behavior was attributed to the high dispersion of surface Ni-0 active phase, abundant oxygen vacancies, and basic sites. In contrast, Ni-CeAl and Ni-CeZr showed inferior catalytic performance due to weak interaction and fewer active sites.
Article
Chemistry, Multidisciplinary
Chengxuan He, Shiqun Wu, Qixin Li, Mingyang Li, Jiaying Li, Lingzhi Wang, Jinlong Zhang
Summary: A Ru single-atom-modified hierarchical porous TiO2-SiO2 catalyst was reported for photocatalytic dry reforming of methane (DRM), showing remarkable activity and durability under mild conditions. The catalyst provided matched active sites for CH4 and CO2 adsorption and activation, optimizing the reaction route for inhibiting side reactions and promoting effective C-O coupling.
Review
Chemistry, Physical
Bernard Chukwuemeka Ekeoma, Mohammad Yusuf, Khairiraihanna Johari, Bawadi Abdullah
Summary: Dry reforming of methane (DRM) is a green alternative for utilizing greenhouse gases and producing syngas. The main limitations of DRM are catalyst sintering and coking. Recent studies have focused on Ni-based catalysts for DRM due to economic constraints on noble metal-based catalysts. Mesoporous silica (MS) supported catalysts show promise due to their high surface areas, thermal stability, and easy availability. However, research on MS as a catalyst support for DRM is still limited.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Ye Wang, L. Li, Chaojun Cui, Patrick Da. Costa, Changwei Hu
Summary: Ni-Zr catalysts modified by Aluminum and Manganese showed improved dry reforming of methane performance at high temperatures, with reduced carbon deposition, due to the promotion of CO2 activation by a higher amount of basic sites and smaller nickel particle size.
Article
Engineering, Chemical
Yexin Hu, Yanru Zhang, Xing Fu, Dianyong Tang, Hui Li, Ping Hu, Liangfang Zhu, Changwei Hu
Summary: The presence of NaCl in water inhibits the degradation of fructose and reduces the formation of unwanted byproducts, but promotes the formation of soluble humins.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Shuai Luo, Yanmei He, Rongzhen Cui, Caixia Fu, Shi-Jian Su, Liang Zhou, Zhiyun Lu, Yan Huang, Yu Liu, Changwei Hu
Summary: Replacing the double-component intermolecular exciplex host with its single-component counterpart not only simplifies the device fabrication process but also improves the electroluminescence performance and thermal stability of FOLEDs.
ORGANIC ELECTRONICS
(2022)
Article
Green & Sustainable Science & Technology
Yuan Xiao, Shengqi Liao, Shuguang Xu, Jianmei Li, Zhiyun Lu, Changwei Hu
Summary: In this study, we developed a dealuminized ZSM-5 loaded erbium catalyst, which exhibited outstanding activity for lactic acid production. The catalyst could selectively convert xylose and glucose to lactic acid. The pretreatment using HNO3 successfully removed partial aluminum in the catalyst, leading to increased surface areas and promoted dispersion of erbium species, resulting in enhanced catalytic activity.
Article
Chemistry, Physical
Xiangze Du, Xiaomei Lei, Linyuan Zhou, Yong Peng, Yan Zeng, Huiru Yang, Dan Li, Changwei Hu, Hermenegildo Garcia
Summary: This study discovers that bimetallic Ni-Mo nitrides can be obtained by a non-nitridation method and serve as efficient catalysts for the hydrodeoxygenation reaction in the production of liquid fuels from biomass. The Ni3Mo3N samples show high selectivity and activity in the hydrodeoxygenation of palmitic acid, and they can be recycled with slight decay in catalytic activity.
Article
Chemistry, Physical
Shuai Fu, Dan Li, Tinghao Liu, Lijuan Liu, Huaqing Yang, Changwei Hu
Summary: The Ni/P ratio of nickel phosphide significantly affects the catalytic performance in the conversion of fatty acids to biofuel. The Ni12P5 cluster exhibits higher catalytic activity compared to the Ni12P6 cluster.
Article
Thermodynamics
Yingdong Zhou, Javier Remon, Jesus Gracia, Zhicheng Jiang, Jose Luis Pinilla, Changwei Hu, Isabel Suelves
Summary: This study explores the use of "sea-thermal" treatment of the microalgae Chlorella Vulgaris to produce energy-dense biofuels and value-added liquid products. The processing conditions and reaction medium were found to significantly affect the yields and properties of the products. Low temperatures and short reaction times favored the formation of biocrude, while high temperatures and prolonged processing times promoted the repolymerization of the biocrude to hydrochar. The salinity of the seawater also played a role in these transformations.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Xiaomei Lei, Hui Xin, Xiangze Du, Huiru Yang, Yan Zeng, Linyuan Zhou, Chao Juan, Hualong Zhang, Dan Li, Changwei Hu
Summary: This study successfully enhanced the hydrodeoxygenation performance of Mo2N catalysts for jatropha oil conversion by synthesizing Ni-Mo2N/gamma-Al2O3 catalyst, resulting in high-quality biofuel.
Article
Agricultural Engineering
Xudong Liu, Mingyu Xie, Yexin Hu, Si Li, Suli Nie, Aihua Zhang, Hong Wu, Changzhu Li, Zhihong Xiao, Changwei Hu
Summary: This study investigated the water-organic co-solvent for the fractionation of lignin in camellia oleifera shell and the fabrication of lignin nanoparticles. The research found that the highest dissolution of lignin was achieved in H2O/GVL co-solvent, and the LNPs prepared from H2O-ethanol co-solvent showed the smallest particle size and the highest stability. The structural analysis revealed that the lignin nanoparticles maintained their basic structural units.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Analytical
Yichen Liu, Wenli Wang, Yue Wang, Longfei Liu, Guiying Li, Changwei Hu
Summary: The effects of dilute sulfuric acid pretreatment on the pyrolytic behaviors of different biomasses were studied. The pretreatment increased cellulose degradation temperature and decreased bio-char yield. Specific small molecular products were found in the bio-oil. The production of lignin-derived compounds increased for rice straw, while decreased for willow and cypress. Pretreatment also promoted the production of oligomers.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Analytical
Yue Wang, Christian Wurzer, Wenli Wang, Yichen Liu, Longfei Liu, Xiaoyan Lv, Ondrej Masek, Changwei Hu
Summary: Pyrolysis of pubescens pretreated by torrefaction was investigated through one-step and stepwise processes. Stepwise processing yielded higher cumulative yield of small molecular compounds, including monosaccharides, carboxylic acids, furans, and monophenols, compared to one-step pyrolysis. Different temperature ranges affected the production of different compounds.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Multidisciplinary
Xiangze Du, Lu Peng, Jiajun Hu, Yong Peng, Ana Primo, Dan Li, Josep Albero, Changwei Hu, Hermenegildo Garcia
Summary: This study reports efficient and selective electrocatalysts for CO2 reduction to CO using Cu and Fe nanoparticles supported on a porous N-doped graphitic carbon matrix. The material exhibits high activity and faradaic efficiency at the optimum Fe/Cu ratio of 2.
Article
Chemistry, Applied
Xiangze Du, Rui Zhang, Dan Li, Changwei Hu, Hermenegildo Garcia
Summary: The present energy dilemma has prompted researchers to search for new renewable energy sources with minimal CO2 emissions. Producing biofuels and platform chemicals from sustainable biomass resources is of great significance, but developing high-efficiency catalysts remains a key scientific challenge. Transition metal carbides, particularly molybdenum carbide, have shown promising performance in biomass conversion. Recent developments in preparing molybdenum carbide as a catalyst in biomass to fuel conversion, focusing on preparation methods, structure-dependent effects, and electronic modulation, are summarized in this review. The controllable selective cleavage of C-C, C-O, and C-H bonds over modified molybdenum carbides is highlighted. The review also presents possible deactivation mechanisms of molybdenum carbide, providing systematic and fundamental information for further design and development in biomass conversion.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Engineering, Environmental
Ting He, Liangwei Deng, Bo Lai, Shuguang Xu, Lan Wang, Yunhong Zhang, Dan Zheng, Changwei Hu
Summary: Fulvic acid, as a model representing bio-refractory soluble organic matter, was treated with a combination of FeSO4 and Ca(ClO)(2) in advanced wastewater treatment. The results showed that the synergistic effect of Fe2+ and ClO- greatly enhanced the removal efficiency of fulvic acid, indicating the involvement of an advanced oxidation process. Oxidation and coagulation played crucial roles in the removal of fulvic acid.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Shanshan Feng, Xudong Liu, Zhishan Su, Guiying Li, Changwei Hu
Summary: In this study, Ru/SBA-15 catalysts were prepared and used for the production of cyclohexanols from lignin-derived phenols. The catalyst showed excellent hydrogenation activity, stability, and demethoxylation activity. The reaction rate of the catalyst was zero-order at 80℃, with a low activation energy.
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)
