Article
Chemistry, Multidisciplinary
Shuai Cheng, Tao Meng, Dongsen Mao, Xiaoming Guo, Jun Yu, Zhen Ma
Summary: Ni-modified Ag/SiO2 catalysts exhibit enhanced catalytic activity and stability due to the improved dispersion of active Ag species and inhibition of Ag particle growth by the presence of Ni species.
Article
Chemistry, Physical
Guilin Dong, Zuwei Luo, Yueqiang Cao, Sainan Zheng, Jinghong Zhou, Wei Li, Xinggui Zhou
Summary: Ag catalysts show promising selectivity for the hydrogenation of DMO to MG, with the size of Ag nanoparticles playing a crucial role in their catalytic performance. The study reveals a size-dependent trend in the activity of Ag/AS catalysts, with a balance between active sites and electronic properties observed for Ag particles with a size of 5.3 nm, leading to maximal reaction rate.
JOURNAL OF CATALYSIS
(2021)
Article
Biotechnology & Applied Microbiology
Hongyan Zheng, Yanfeng Xue, Yulan Niu, Xiaoqing Gao, Yueqing Wang, Guoqiang Ding, Yulei Zhu
Summary: A simple and low-cost Ru/activated carbon (AC) catalyst was developed for the hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG) under mild conditions. The Ru/AC catalyst demonstrated superior catalytic performance, which could be attributed to its high dispersion of Ru, small particle size, weak surface acidity, and electron-deficient state of Ru species.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Environmental
Zuwei Luo, Xiaofeng Xu, Guilin Dong, Yueqiang Cao, Shen Hu, Guanghua Ye, Yi-An Zhu, Jinghong Zhou, Wei Li, Xinggui Zhou
Summary: Regulating mesopore structures is crucial for enhancing diffusion and achieving improved activity and selectivity. Mesoporous silica with distinct structured mesopores is used as a support for Ag catalysts in the selective hydrogenation of dimethyl oxalate (DMO) into methyl glycolate (MG), leading to enhanced hydrogenation activity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Guofeng Zhao, Hu Li, Jiaqi Si, Qiang Nie, Chao Meng, Ye Liu, Yong Lu
Summary: Three meso-SiO2 supported Ni3P catalysts exhibit different reactivities for gas-phase hydrogenation of DMO to MG, with Ni3P/RB-MSN showing the highest selectivity and stability. The catalyst has a turnover frequency of 204.2 h(-1) and an activation energy of 84.0 kJ mol(-1).
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Engineering, Environmental
Zheng Li, Yihui Li, Xuepeng Wang, Yuan Tan, WenShao Yang, Hejun Zhu, Xingkun Chen, Wei Lu, Yunjie Ding
Summary: The hydrogenation of dimethyl oxalate to produce ethanol is a research topic of great interest due to its environmentally friendly nature. However, the yield of ethanol using Cu-based catalysts remains a challenge. In this study, a molybdenum-doped Cu catalyst was synthesized and demonstrated to be a robust catalyst with a high ethanol yield. The addition of Mo increased the amount of surface Cu+ species and enhanced the surface acidity, resulting in a high ethanol selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yuxi Xu, Lingxin Kong, Huijiang Huang, Hui Wang, Xiaofei Wang, Shengping Wang, Yujun Zhao, Xinbin Ma
Summary: The introduction of indium improves the reduction of indium oxide and formation of CuIn alloy, enhancing the activation of H-2. The CuIn alloy and Cu-0 species have a synergistic effect with Cu+, resulting in a higher EG yield for the Cu1In/SiO2 catalyst compared to the undoped Cu/SiO2 catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Thermodynamics
Qingchun Yang, Yingjie Fan, Chenglin Liu, Jianlong Zhou, Lei Zhao, Huairong Zhou
Summary: The rapid expansion of the coal-to-ethylene glycol (CtEG) industry has led to an oversupply of ethylene glycol and poor economic performance. This study proposes and optimizes three coal-to-methyl glycolate (CtMG) processes with different catalysts, which show better techno-economic performance compared to the CtEG process. The use of an Ag-based catalyst in the dimethyl oxalate to methyl glycolate process achieves the highest yield of methyl glycolate (93.51%). The proposed CtMG processes can turn a loss into a profit and significantly improve the internal rate of return of the CtEG process.
Article
Chemistry, Multidisciplinary
Xue Wang, Siqian Qin, Hanqing Zhang, Jiang Gong, Weihan Shu, Chuancai Zhang, Denghao Wang, Bin Dai
Summary: MG has a unique molecular structure and is an important chemical intermediate with promising applications. Ag-Ce/ZrO2 catalysts with different contents were prepared for hydrogenation of DMO to MG through equal volume impregnation. The addition of Ce helps in the formation of more oxygen vacancies in the catalyst, making it easier for Ag2O to be reduced to Ag monomers. The performance test results showed that the addition of an appropriate amount of Ce has a certain promotional effect on the hydrogenation performance of the catalyst, with significantly improved yield of MG compared to the Ag/ZrO2 catalyst.
Article
Chemistry, Physical
Deliang Yang, Ling Lin, Rong Guo, Peiyu Zhao, Wei Cheng, Wenpeng Yuan, Yeyan Qin, Yuangen Yao
Summary: The study shows that different silver promotion methods have significant effects on the activity, selectivity, and stability of Cu-Ag/SiO2 catalysts. Introducing silver promoter through impregnation method B can enhance the activity and selectivity of the catalyst, as well as improve the stability of the Cu/SiO2 catalyst.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Shuai Cheng, Tao Meng, Dongsen Mao, Xiaoming Guo, Jun Yu
Summary: The addition of boron as a promoter to the Ag/SiO2 catalyst for the selective hydrogenation of dimethyl oxalate to methyl glycolate was investigated. Two methods of incorporating boron were compared, and it was found that impregnation introduction of boron yielded better results. The effects of different boron contents on the properties and catalytic performance of the catalyst were studied, and it was observed that the introduction of boron significantly enhanced the activity and stability of the catalyst, with 1 wt % boron showing the best performance.
Article
Energy & Fuels
Jinchi Niu, Peipei Ai, Qiwu Guo, Huiqing Jin, Zhihua Gao, Wei Huang
Summary: In this work, N-doped layered carbon supported Cu catalysts were constructed for the hydrogenation of dimethyl oxalate (DMO) to produce methyl glycolate (MG). Nitrogen doping had a significant effect on the particle size, valence state, and electronic environment of Cu species. The synergistic effect of high Cu0/(Cu0 + Cu+) ratio and electron density in the Cu/C-E catalyst resulted in a MG yield of up to 74.84%. Furthermore, the intimate interaction between the Cu species and N-doped carbon support improved the thermal and valence stability, leading to a remarkably higher stability of over 600 hours compared to currently reported Cu catalysts.
Article
Chemistry, Physical
Yue Zhang, Chunyu Zhang, Guozhu Liu, Li Wang, Zhiyong Pan
Summary: Ce-doped SBA-15 was synthesized and used as a support for Pd catalyst in the hydrogenation of EAQ. Ce species partly incorporated into SBA-15 framework and partly existed as extra-framework Ce and CeO2 particles. Ce species in the framework suppressed the aggregation of Pd particles. Ce-doped catalysts showed significantly enhanced catalytic performance compared with Pd/SBA-15.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Li Zhang, Peipei Ai, Zhihua Gao, Wei Huang
Summary: This study prepared copper-based catalysts using mesoporous silica with different structures and morphologies as support and tested their catalytic performance and stability through hydrogenation reaction. The results showed that the structure and morphology of the support significantly affected the stability of the copper-based catalysts. In particular, the catalyst prepared using MS-3 with hexagonal prism-like structure as support exhibited excellent catalytic performance and stability.
Article
Engineering, Environmental
Jian Zhu, Guofeng Zhao, Chao Meng, Pengjing Chen, Xue-Rong Shi, Yong Lu
Summary: A high-performance InNi3C0.5/Ni-foam catalyst has been developed for the gas-phase hydrogenation of dimethyl oxalate (DMO) to ethylene glycol (EG). The catalyst exhibits a high turnover frequency of 636 h(-1) and effectively activates DMO while hindering over-hydrogenation of EG to ethanol. This catalyst shows promising potential for industrial applications with full DMO conversion and high EG selectivity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Huihuang Fang, Weikun Chen, Lijie Wu, Pu Zhao, Alberto Roldan, Youzhu Yuan
Summary: A comprehensive strategy was developed to synthesize stable and well-defined tungsten carbide nanoparticles, which exhibited high stability and catalytic activity for selective cleavage of the aryl ether C-O bonds in lignin-derived aromatic ethers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Peng Chen, Keliang Wu, Xiang Peng, Yue Ma, Xuqi Yang, Xinping Duan, Yan Ma, Zhiyong Liu
Summary: Researchers have developed a photocatalyst mimicking biological vegetative leaves that can simultaneously produce hydrogen and oxygen, making progress in addressing challenges in water splitting.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Lele Huang, Xu-Feng Liu, Jinglin Zou, Xinping Duan, Zuo-Chang Chen, Zhe-Hui Zhou, Linmin Ye, Xuelian Liang, Su-Yuan Xie, Youzhu Yuan
Summary: This study presents the immobilization of atomic ruthenium (Ru) with oxidized state on defect-rich hexagonal boron nitride (d-BN) nanosheets and the important interfacial electronic effect on Ru. Experimental results demonstrate the strong electronic interaction between vacancies and atomic Ru species. Compared to defect-free hexagonal BN (h-BN), d-BN can highly stabilize the active Ru species, resulting in significantly improved catalytic activity and durability.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Danlu Wen, Jiachang Zuo, Xiaoqin Han, Jia Liu, Linmin Ye, Youzhu Yuan
Summary: This study presents a novel pathway for the synthesis of durene, a value-added aromatic compound used in producing high-end polyesters. By coupling the methylation of 1,2,4-trimethylbenzene with syngas conversion using a bifunctional catalyst, high selectivity of durene was achieved. The introduction of Cu into the catalyst improved the catalytic activity and stability.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xiaojing Liu, Xinping Duan, Chong Zhang, Peiyu Hou, Xijin Xu
Summary: By applying a hydrothermal method with in situ reduction treatment, sensitive Ag/Pd@In2O3-based materials were designed and synthesised for toluene sensing performance investigation. The synthesized sensors showed high response, short recovery time, low detection limit, excellent reproducibility, and selectivity towards toluene gas. Overall, this study opens a pathway for cost-effective and competitive detection of toluene gas, benefiting public safety monitoring and health care.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Jianwei Zheng, Lele Huang, Cun-Hao Cui, Zuo-Chang Chen, Xu-Feng Liu, Xinping Duan, Xin-Yi Cao, Tong-Zong Yang, Hongping Zhu, Kang Shi, Peng Du, Si-Wei Ying, Chang-Feng Zhu, Yuan-Gen Yao, Guo-Cong Guo, Youzhu Yuan, Su-Yuan Xie, Lan-Sun Zheng
Summary: Fullerene can act as an electron buffer for a copper-silica catalyst, enabling high yield of ethylene glycol. This mild reaction pathway can be combined with the already-industrialized ambient reaction.
Article
Chemistry, Multidisciplinary
Xiaoying Liu, Weikun Chen, Jinglin Zou, Linmin Ye, Youzhu Yuan
Summary: By using cyclohexanone as an inducer, the traditional phenol amination method can significantly improve the selectivity to primary aniline without the need for external hydrogen addition, addressing the issue of poor selectivity in the traditional method.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Weikun Chen, Xiaoying Liu, Hui Zheng, Xiao Fu, Youzhu Yuan
Summary: Utilizing solar energy for photocatalytic H2 evolution coupled with value-added chemical synthesis is a promising solution for energy and environmental crises. In this study, a nanophotocatalyst of Pt/P25 was used to synthesize hexamethylenetetramine (HMT) and produce H2 from methanol and ammonia in one pot. The addition of ammonia inhibited the formation of byproduct ethylene glycol, promoted H2 evolution, and achieved high selectivity for HMT synthesis. The Pt valence state was controlled by calcination and reduction treatment, suggesting the stability of Pt/P25 as a catalyst. The optimized formation rates for H2 and HMT were 71.53 and 11.39 mmol gcat-1 h-1, respectively.
Article
Engineering, Environmental
Jinglin Zou, Xinping Duan, Xu Liu, Lele Huang, Xiaoying Liu, Jiachang Zuo, Weizhou Jiao, Haiqiang Lin, Linmin Ye, Youzhu Yuan
Summary: This study reveals the intrinsic reactive sites of Ag/ZrO2_x catalysts, where the outer surface and/or interfaces coupled with oxygen species in the vicinity of nanoparticles concurrently work. Ag/ZrO2_x achieves a higher intrinsic hydrogenation rate for selective scission of C-O bond per mass Ag than the reference Ag/SiO2 catalyst. The study provides insights into understanding the structure-performance relationships and the activity origin in heterogeneous catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Ziren Fang, Mingqiang Li, Lixiang Wang, Xinping Duan, Hu Zhao
Summary: In this study, a method of applying KF water-in-salt electrolyte in Cu-Zn battery was proposed, and a battery system based on the shuttle of fluoride-ion was constructed. Due to the new anode conversion mechanism, the discharge platform was improved to 1.9 V and the battery worked steadily for 1600 cycles. The battery takes advantage of the high conversion voltage of metal fluoride, while retaining the characteristics of Cu-Zn batteries such as low price and environmental friendliness. This work not only avoids the generation of zinc dendrites, but also provides a new strategy to make Cu-Zn battery rechargeable.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jiachang Zuo, Chong Liu, Xiaoqin Han, Danlu Wen, Xiaoying Liu, Linmin Ye, Wei Zhuang, Youzhu Yuan
Summary: Utilizing CO2 as a C-1 resource for synthesizing aromatics is significant, but forming an ethylated or propylated side chain at the benzene ring is challenging. In this study, a dual-bed system with rationally distributed catalysts was used for the first time to achieve CO2 hydrogenation in tandem coupling with benzene alkylation, enabling the synthesis of ethylbenzene and propylbenzene with high selectivity.
Article
Chemistry, Applied
Xiaoqin Han, Jiachang Zuo, Danlu Wen, Youzhu Yuan
Summary: The toluene methylation coupled with CO hydrogenation was studied for enhanced para-xylene (PX) selectivity using a bifunctional catalyst composed of ZnZrOx and modified Z5. The acid strength, the quantity ratio of acid sites, and the pore size of zeolites were found to be essential for PX selectivity.
CHINESE JOURNAL OF CATALYSIS
(2022)
