Article
Engineering, Chemical
Lulu He, Yuanhang Ren, Bin Yue, Shik Chi Edman Tsang, Heyong He
Summary: Increasing the calcination temperature of nickel-based catalysts on alumina leads to the formation of nickel-alumina spinel, enhancing metal-support interaction and reducing temperature. It also decreases nickel nanoparticle size and increases effective dispersion due to the formation of nickel aluminate. The catalyst calcined at 750 degrees C shows the highest conversion rates in methane dry reforming and excellent stability in a 200 h test.
Article
Energy & Fuels
Thiago Gomes de Araujo Moreira, Jose Faustino Souza de Carvalho Filho, Yuri Carvalho, Joao Monnerat Araujo Ribeiro de Almeida, Pedro Nothaft Romano, Eduardo Falabella Sousa-Aguiar
Summary: The study revealed that rhodium-based catalysts showed higher stability and catalytic performance in the dry reforming of methane reaction compared to nickel-based catalysts.
Review
Chemistry, Multidisciplinary
A. H. K. Owgi, A. A. Jalil, I. Hussain, N. S. Hassan, H. U. Hambali, T. J. Siang, D. V. N. Vo
Summary: By selecting the active metal, supporting materials, promoters and preparation techniques, improved catalysts of high catalytic performance and stability can be obtained for dry reforming of methane. There is a strong correlation between the support morphology, physicochemical properties and catalytic performances, with fibrous structures showing optimal metal-support interaction and high performance.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Energy & Fuels
Dongyang Shen, Jie Wang, Yue Bai, Shuai Lyu, Yuhua Zhang, Jinlin Li, Lin Li, Guanghui Wang
Summary: Producing syngas from dry reforming of methane is challenging due to coking and sintering. In this study, carbonised Ni based catalysts were fabricated and applied to low-temperature DRM reaction. The effects of carbonising temperature on carbon structure and the catalytic structure-function relationship were investigated in detail. Ultimately, the carbon-confined catalysts effectively converted greenhouse gases to syngas at a low temperature and mitigated sintering and coking.
Article
Chemistry, Physical
Dongyang Shen, Zhe Li, Jie Shan, Guowang Yu, Xiaoyan Wang, Yuhua Zhang, Chengchao Liu, Shuai Lyu, Jinlin Li, Lin Li
Summary: This study presents a Pt single-atom catalyst anchored on rod-like CeO2 to enhance dry reforming of methane at low temperature. Experimental and theoretical studies show the Pt-doped CeO2 surface significantly reduces the formation energy of oxygen vacancies, improving catalytic efficiency for greenhouse gas conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Jun Liu, Yu Zhang, Zhoujie Liang, Guojie Zhang, Ying Wang, Yuqing Zhao, Guoqiang Li, Yongkang Lv
Summary: In this study, a variety of bimetallic catalysts with different Ni/Co ratios were synthesized using the co-impregnation method for methane dry reforming reaction. The influence of different Ni/Co ratios on the catalyst performance was investigated. The catalysts were characterized by various techniques including XRD, BET, H2-TPR, TG, TEM, and FTIR. The results showed that the introduction of Co enhanced the interaction between the active component and the carrier, leading to improved dispersion of the active component, reduced particle size, and increased catalyst activity. Additionally, the introduction of Co species with high oxygen affinity facilitated the formation of oxygen vacancies, resulting in higher lattice oxygen and carbonate species in the catalysts. This contributed to the elimination of carbon accumulation and improved catalyst stability. The 10Ni-8Co-10Y/WC-AC catalyst exhibited excellent performance in methane dry reforming with conversions of CO2 and CH4 reaching 95% and 88%, respectively, at 800 degrees C and atmospheric pressure.
Article
Chemistry, Physical
Chaojun Cui, Ye Wang, Xiangze Du, Li Li, Mouxiao Song, Wenqing Zeng, Guiying Li, Changwei Hu
Summary: The study demonstrates the significant influence of nickel loading on the performance of CO2 reforming of methane catalysts. Lower nickel loading can lead to increased CH4 conversion stability without coke formation, while higher nickel loading results in decreased activity and carbon accumulation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Izabela Wysocka, Aleksandra Mielewczyk-Gryn, Marcin Lapinski, Bartlomiej Cieslik, Andrzej Rogala
Summary: This study investigated the application of K-promoted Ni/MgAl2O4 catalysts with different K/Ni ratios in dry reforming of methane to improve the utilization of CO2 and CH4. The promotion of nickel catalysts with potassium was found to affect nickel distribution, metal-support interactions, and carbon deposition, leading to enhanced CO2 adsorption and reduction of the H-2:CO ratio of the catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Chengxuan He, Shiqun Wu, Lingzhi Wang, Jinlong Zhang
Summary: This review discusses the importance and challenges of converting methane and carbon dioxide into hydrogen and carbon monoxide, highlighting the potential of photo-enhanced dry reforming of methane. Research results show promising and green routes under relatively mild conditions, providing insights and prospects for the future development of this field.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS
(2022)
Article
Engineering, Environmental
J. J. Torrez-Herrera, S. A. Korili, A. Gil
Summary: The synthesis and optimization of nickel/lanthanum hexaaluminates (NiO/LHA) for dry reforming of methane (DRM) were studied in this work. The catalysts showed high stability and catalytic activity, with specific surface areas and tailored structures obtained through various synthesis methods, contributing to the improved performance in DRM reactions. Factors such as textural properties, metal interaction, and nickel grain growth and distribution in the support were found to influence catalytic stability and conversion rates. Additionally, the identification of different coke types and their effects on catalytic deactivation provided insights into the mechanisms underlying the superior catalytic performance of the NiO/LHA catalysts.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
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, Physical
Ashvin L. Karemore, Renu Sinha, Parivesh Chugh, Prakash D. Vaidya
Summary: The performance of Ni-K/CeO2-Al2O3 catalyst in mixed reforming of methane (MRM) was investigated in this study. Various reaction conditions were studied to analyze the conversion of CH4 and CO2, yield of H2 and CO, and the H2/CO ratio in syngas. The study is expected to assist in catalyst development and reactor design for the MRM process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
A. S. Urlukov, S. I. Uskov, V. A. Sobyanin, P. V. Snytnikov, D. I. Potemkin
Summary: This work focuses on the study of low-temperature steam reforming using a highly dispersed Rh-based catalyst for flare gas mixtures containing C2H6-C4H10. The catalyst showed excellent performance in converting C2+ hydrocarbons into CH4, CO2, and H2, especially at lower temperatures. The high concentration of ethane produced by the Rh catalyst can compensate for the dilution effect of carbon dioxide and hydrogen in the reaction products, making it useful for adjusting the fuel properties of resulting gas mixtures.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yu-Shih Lin, Jia-Yun Tu, De-Hao Tsai
Summary: This study demonstrates a facile aerosol-based method to prepare hybrid nanostructures for catalyzing steam-promoted CO2 reforming with methane. The resulting NiPdOx-CeO2 nanoparticles deposited on SiO2 nanoparticle clusters exhibit superior catalytic performance at low temperatures, with high turnover frequency, tunable H2/CO ratio, and long-term operation stability. Incorporating SiO2 nanoparticle clusters as support material helps to enhance the dispersion of active metals and suppress metal sintering.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yuanjie Xu, Zemin An, Xin Yu, Jikang Yao, Qian Lv, Hua Yang, Zhengang Lv, Huichuang Guo, Qike Jiang, Wei Liu, Lizhi Wu, Li Tan, Yihu Dai, Yu Tang
Summary: The SMSI effect of Rh nanoparticle catalyst supported on h-BN is investigated in the dry reforming of methane reactions. It is found that under reaction conditions, the catalyst is encapsulated by BOx overlayers, preventing the interaction between reactants and metal centers and improving the stability and activity of the catalyst.
JOURNAL OF CATALYSIS
(2023)
Review
Agricultural Engineering
Yingdong Zhou, Li Liu, Mingyu Li, Changwei Hu
Summary: Algae are considered promising biomass resources for biofuel production, but the economic and energetical feasibility of algal cultivation, harvesting, and conversion processes are being questioned. Value-added bioproducts can be generated through algae conversion to enhance the economic viability of algal biorefineries. Various challenges are proposed for future algal biorefineries, such as utilizing naturally grown algae, fractionating algae for high-selectivity products, and developing efficient processes for commercialization and industrialization.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiangze Du, Yong Peng, Josep Albero, Dan Li, Changwei Hu, Hermenegildo Garcia
Summary: This study investigated the photocatalytic decarboxylation of octanoic acid using a series of modified TiO2 catalysts to produce mixtures of n-heptane and tetradecane. The optimal NaBH4 treatment was found to enhance the photocatalytic activity, leading to almost complete conversion of octanoic acid and high selectivity towards n-heptane and tetradecane. These results demonstrate the potential of photocatalytic decarboxylation for the production of synthetic fuels from biomass under mild conditions.
Article
Energy & Fuels
Chao Sun, Katarzyna Swirk Da Costa, Ye Wang, Li Li, Marco Fabbiani, Vasile Hulea, Magnus Ronning, Changwei Hu, Patrick Da Costa
Summary: Promoted Ni/Y/SBA-16 catalysts exhibited enhanced catalytic performance in CO2 methanation, with the catalyst promoted with 10 wt% Y showing the best activity. The improved performance was attributed to increased reducibility of nickel species, higher surface oxygen species, and the presence of moderate basic sites caused by yttrium promotion.
Article
Chemistry, Physical
Li Li, Wenqing Zeng, Mouxiao Song, Xueshuang Wu, Guiying Li, Changwei Hu
Summary: This article focuses on the progress of CO2 methanation and the key parameters of catalysts based on nickel, as well as the reaction mechanism. Designing and preparing catalysts with high activity and stability at low temperature, as well as studying the reaction mechanism, are important areas for further research.
Article
Thermodynamics
Wenli Wang, Yichen Liu, Yue Wang, Longfei Liu, Changwei Hu
Summary: The study on three types of organosolv lignin samples revealed that different co-solvents used for extraction had varying effects on the properties and pyrolysis behaviors of lignin, leading to differences in the content of functional groups, large-molecule fragments, and degradation temperatures. The findings indicate the importance of understanding the impact of solvents on lignin characteristics for targeted applications.
ENERGY CONVERSION AND MANAGEMENT-X
(2022)
Article
Agricultural Engineering
Juan Zhao, Fengpei Yao, Changwei Hu
Summary: Tetrahydrofuran/water co-solvent pretreatment enhances enzymatic hydrolysis of various crop straws and enables sorghum straw to adapt to different particle sizes. The pretreated sorghum straw shows potential for bioethanol production with high glucose yield and enzymatic hydrolysis efficiency.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Min Wang, Cidan Lv, Changwei Hu, Zhishan Su
Summary: The reaction mechanism and key factors controlling stereo- and product-selectivity in isocyanide-based multicomponent reactions (MCRs) were studied using a chiral N, N'-dioxide-Mg(II) catalyst. It was found that the formation of two different tetrazoles occurred through a two-stage one-step pathway, while non-catalytic reactions were difficult to proceed. The formation of a hexacoordinate-Mg(II) species through coordination with alkylidene malonate accelerated the formation of tetrazole rings. Steric hindrance from the cyclohexyl group in alkylidene malonate and the o-iPr group in the catalyst influenced the attack of isocyanide, resulting in predominantly S-configuration products. The nucleophilicity of reactants and weak pi-pi interaction played important roles in controlling the distribution of the tetrazoles.
MOLECULAR CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Chao Sun, Paulina Summa, Ye Wang, Katarzyna Swirk Da Costa, Albert Miro i Rovira, Sandra Casale, Konrad Swierczek, Changwei Hu, Magnus Ronning, Patrick Da Costa
Summary: High surface area and porous SBA-16 was used as support for Ni nanoparticles through different methods, and the catalyst derived from ammonia evaporation showed the best catalytic performance. The improvement in catalytic behavior was attributed to the strong metal-support interaction and high Ni dispersion.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Ge Gao, Javier Remon, Zhicheng Jiang, Lu Yao, Changwei Hu
Summary: A novel hydrotalcite-derived Pt-based catalyst was synthesized for selective hydrogenation of furfural to furfuryl alcohol. The catalyst's structure facilitated high dispersion and effective reduction of Pt species, and enabled selective adsorption of the aldehyde group of furfural and rapid desorption of the produced furfuryl alcohol, ensuring high selectivity and stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Editorial Material
Chemistry, Multidisciplinary
Stefania Albonetti, Changwei Hu, Shunmugavel Saravanamurugan
Summary: In this Editorial, the Guest Editors introduce the significance and challenges of the sustainable transformation of 5-hydroxymethylfurfural, as well as outline the contents of the Special Issue with contributions from scientists around the world.
Article
Environmental Sciences
Yuan Xiao, Shiyao Chen, Jianmei Li, Zhiyun Lu, Changwei Hu
Summary: This study developed a new technology (Sn(IV)-Cu(II) system) that achieved the transformation of acetol to lactic acid with a record-breaking yield of 91.8 C-mol%. Experimental and DFT study results showed that [Cu(H2O)(4)](2+) and [Sn(OH)(3)(H2O)(3)](+) were the possible active species, exhibiting outstanding synergistic effects.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Organic
Yan Zhang, Cidan Lv, Changwei Hu, Zhishan Su
Summary: In this work, we investigated the mechanistic study of asymmetric alkynylation of isatin-derived N-Boc ketimine. We found that guanidine-amide promotes the formation of highly nucleophilic copper acetylene species by abstracting the terminal proton of phenylacetylene. The most active species in the addition of the CN bond is the guanidinium salt-Cu(I) complex, where copper acetylene coordinates to the O atom of the amide moiety. The isatin-derived ketimine substrate is activated through hydrogen bonding and tert-butoxycarbonylmiddotmiddotmiddotCu(I) coordination. The copper acetylene prefers attacking the isatin-derived ketimine from the re-face, resulting in the S-configuration product with excellent stereoselectivity. The affinity of the counterion for the Cu(I) center affects the deprotonation of phenylacetylene and the formation of guanidinium salt active species. Unlike CuBr and CuCl, the combination of CuI with aniline-derived guanidineamide exhibits high catalytic activity and chiral induction effect, leading to a high turnover frequency (9.70 x 10-4 s-1) in catalysis and ee%.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Engineering, Chemical
Qing Tian, Xiaoyan Wang, Wenyu Zhang, Shengqi Liao, Changwei Hu, Jianmei Li
Summary: This study presents a simple and robust MgO-NaBF4 system catalyst for the selective production of glyceric acid from renewable biomass-based sugar. The method achieves a high yield of 78.8% under mild conditions, eliminating the need for strong alkalis and severe reaction conditions. The insights from this work offer new chemo-catalytic approaches for glyceric acid production.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Applied
Xiangze Du, Jinjia Liu, Dan Li, Hui Xin, Xiaomei Lei, Rui Zhang, Linyuan Zhou, Huiru Yang, Yan Zeng, Hualong Zhang, Wentao Zheng, Xiaodong Wen, Changwei Hu
Summary: This study investigates the influence of doped Ni on the structure and performance of Ni-Mo2C catalyst in the selective cleavage of C-O and C-C bonds. The results show that doped Ni enhances the catalytic activity, improves electron transfer, and increases the amount of acid sites, leading to the efficient cleavage of C-O and C-C bonds.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yexin Hu, Hui Li, Ping Hu, Linzhen Li, Di Wu, Zhidan Xue, Liangfang Zhu, Changwei Hu
Summary: This study investigates the effects of fructose concentration on the pathways of humin formation during fructose dehydration reaction. The study reveals the promoting and inhibiting effects of fructose concentration on the formation pathways of humins. Additionally, the study shows that the addition of a co-solvent can stabilize the species and increase the HMF yield.
REACTION CHEMISTRY & ENGINEERING
(2022)
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)