Article
Energy & Fuels
Kyu Min Lee, Jun Ho Jang, Mani Balamurugan, Jeong Eun Kim, Young In Jo, Ki Tae Nam
Summary: Electrochemical reduction of CO2 to produce fuel precursors and additives has traditionally been limited in product variety and overall efficiency. A recent study successfully utilized redox-neutral reactions to convert CO2 into dimethyl carbonate in methanol with high Faradaic efficiency, and expanded to diethyl carbonate. This approach shows promise in broadening the scope of products and improving efficiency through innovative design strategies.
Article
Chemistry, Multidisciplinary
Yu-Fen Bao, Yi-Jie Wang, Yu-Chen Wang, Ding-Hua Liu
Summary: By studying the influence of ionic liquid base strength, we successfully synthesized a potassium imidazole (KIm) organic base catalyst with high catalytic activity and stability, solving the issue of catalyst deactivation in transesterification. The results showed that KIm performed better than most previously reported catalysts, achieving chemical equilibrium within 3 minutes and yielding 73.03% dimethyl carbonate (DMC) in the synthesis from propylene carbonate (PC) and methanol (MeOH). Moreover, the catalyst maintained its activity after ten reaction cycles, meeting the requirements for industrial production.
Review
Chemistry, Physical
Peiyu Zhao, Junfen Yan, Bingquan Shan, Yu Zhang, Zhiyuan Zhao, Li Liu, Zhi Su, Wei Cheng, Xianmang Xu
Summary: The control of Cu nanoparticles in carbon supported Cu catalysts is crucial for the industrialization of the oxidative carbonylation of methanol to DMC. This paper reviews recent approaches in controlling Cu nanoparticles and discusses the problems and prospects of carbon supported Cu catalysts for DMC preparation.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Applied
Chunzheng Wang, Weisong Xu, Zhengxing Qin, Hailing Guo, Xinmei Liu, Svetlana Mintova
Summary: Enhanced interactions between palladium and EMT zeolite inhibit sintering of palladium clusters and maintain Pd2+ active sites, which is crucial for the excellent performance of the catalyst in the indirect oxidative carbonylation of methanol to DMC.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Fengqian Zhao, Patrizio Russo, Raffaella Mancuso, Bartolo Gabriele, Xiao-Feng Wu
Summary: A copper-catalyzed carbonylation of alkyl iodides with phenols is reported, yielding corresponding esters in good yields. Aliphatic alcohols are also suitable partners in this reaction.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Chunzheng Wang, Ningkun Xu, Ting-Ting Liu, Weisong Xu, Hailing Guo, Yanpeng Li, Peng Bai, Xin-Ping Wu, Xue-Qing Gong, Xinmei Liu, Svetlana Mintova
Summary: This study reveals the impact of mechanical compression on Pd/NaY catalysts, which enhances the selectivity of the oxidative carbonylation of methanol to DMC by controlling the ratio of Pd species. The Pd clusters obtained under mechanical treatment show excellent catalytic performance, highlighting the importance of considering structural changes in metal-containing zeolite catalysts in heterogeneous catalysis.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Rongsheng Liu, Benhan Fan, Wenna Zhang, Linying Wang, Liang Qi, Yingli Wang, Shutao Xu, Zhengxi Yu, Yingxu Wei, Zhongmin Liu
Summary: Selective relocation of aluminum atoms in mordenite framework can generate and intensify active sites in zeolite, improving selectivity and lifetime of catalytic reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Preeti H. Pandey, Hitesh S. Pawar
Summary: This study focuses on the direct carbonylation of glycerol into glycerol carbonate (GC) using CO2 and mixed metal oxide (MMO) catalyst. By exploring different catalysts and reaction parameters, the most efficient catalyst and conditions were identified. The synthesized MMO catalyst exhibited good recyclability and the reaction mechanism was proposed. The method provides a simple and efficient way to produce GC with high yield and selectivity using MMO catalyst.
Article
Energy & Fuels
Gitanjali Pradhan, Yogesh Chandra Sharma
Summary: Glycerol carbonate is a trending value added chemical in various industries, with researchers focusing on its synthesis from glycerol as a by-product of biodiesel. The use of a highly efficient heterogeneous Mg/ZnO base catalyst for the transesterification of glycerol with dimethyl carbonate was successful in producing glycerol carbonate with high conversion rates.
Article
Chemistry, Multidisciplinary
Qingchun Yang, Yingjie Fan, Jianlong Zhou, Lei Zhao, Yichun Dong, Jianhua Yu, Dawei Zhang
Summary: A machine learning framework was developed to accelerate the screening and optimization of catalysts for indirect CO2 hydrogenation, predicting the conversion ratio and yields. The optimized neural network showed higher performance in predicting ethylene carbonate conversion and product yields. The xMoO(x)-Cu/SiO2 catalyst was identified as the most suitable for industrialization after experimental verification.
Article
Chemistry, Physical
Jiajun Wang, Tingjun Fu, Fanhui Meng, Dan Zhao, Steven S. . C. Chuang, Zhong Li
Summary: A micropore-rich mesoporous carbon (MMC) derived from ordered mesoporous carbon (OMC) is used as a support to prepare a highly active nano Cu2O catalyst for methanol oxidation carbonylation. The well-dispersed Cu nanoparticles with high purity of Cu2O are obtained, leading to significantly enhanced performance in terms of space-time yield and turnover frequency of DMC. The introduction of plentiful under-coordinated carbon atoms in the micropores plays a key role in immobilizing Cu precursors and accelerating the auto-reduction of CuO to form high-purity Cu2O, thereby enhancing the intrinsic activity of the catalyst.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Gunjan P. Deshmukh, Ganapati D. Yadav
Summary: This study explores the use of different polymorphs of MnO2 as catalysts for the selective synthesis of glycerol carbonate through transesterification. The comparison between microwave and conventional heating methods is made, showing advantages in using microwave heating. A kinetic model is developed for the process, enhancing its overall green and sustainable nature.
MOLECULAR CATALYSIS
(2021)
Article
Engineering, Chemical
Chengwei Liu, Ziyi Chi, Yong Yan, Zhenyang Lu, Xue-Gang Li, Jian-Min Yan, Man Luo, Wende Xiao
Summary: This study investigates the tunable transesterification of dimethyl carbonate (DMC) with ethanol to synthesize ethyl methyl carbonate (EMC) and diethyl carbonate (DEC) using a solid alkaline catalyst. The catalyst displayed high activity for the reaction, with the selectivities of EMC and DEC being tunable by adjusting the space velocity and feed ratio. The findings contribute to the development of co-solvents for electrolytes in lithium-ion batteries.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Xuejing Ren, Yanhong Quan, Wen Yang, Jinxian Zhao, Ruina Shi, Jun Ren
Summary: A series of copper catalysts with loading less than 1.0 wt% supported on super activated carbon were prepared and applied in methanol oxidative carbonylation. The catalyst with higher dispersion and stability showed commercial prospects for dimethyl carbonate (DMC) synthesis.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Yang Liu, Jianshan Chen, Rong Guo, Hanying Wu, Runping Ye, Yeyan Qin, Siqi Wu, Yuangen Yao
Summary: In this study, a series of starch-coated catalysts (Pd-Cu/AC@S3, S4, and S5) were prepared and used for the synthesis of dimethyl carbonate (DMC). Among them, the catalyst modified with 4 wt% starch showed the best catalytic performance, with a significant improvement in CO conversion and selectivity compared to the original catalyst. This work presents a new approach for the modification of activated carbon supports and provides an efficient catalyst for DMC synthesis.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Yuting Li, Xiaoxia Han, Chaofan Zhao, Lin Yue, Jinxian Zhao, Jun Ren
Article
Engineering, Chemical
Jinxian Zhao, Ruina Shi, Yanhong Quan, Junjie Liu, Juan Wang, Yongli Pei, Xuhui Wang, Zhong Li, Jun Ren
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Xiaoxia Han, Lin Yue, Chaofan Zhao, Shaohua Jiang, Junjie Liu, Yuting Li, Jun Ren
Article
Chemistry, Physical
Jiangwei An, Xuhui Wang, Jinxian Zhao, Shaohua Jiang, Yanhong Quan, Yongli Pei, Mengmeng Wu, Jun Ren
MOLECULAR CATALYSIS
(2020)
Article
Energy & Fuels
Yahong Han, Yanhong Quan, Panpan Hao, Jinxian Zhao, Jun Ren
Article
Nanoscience & Nanotechnology
Ruina Shi, Jinxian Zhao, Yanhong Quan, Xuhui Wang, Jiangwei An, Junjie Liu, Wei Sun, Zhong Li, Jun Ren
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Mengmeng Wu, Xiaoxiong Hou, Yanhong Quan, Jinxian Zhao, Jun Ren
Article
Engineering, Chemical
Xuhui Wang, Jinxian Zhao, Ying Li, Shouying Huang, Jiangwei An, Ruina Shi, Yongli Pei, Zhong Li, Jun Ren
Summary: ZrO2 is a potential catalyst for the direct synthesis of DMC, with m-ZrO2 showing higher DMC yield than t-ZrO2. The amount and strength of surface Brønsted acid sites play a crucial role in the catalytic performance of ZrO2, and m-ZrO2's smaller band gap enhances its catalytic activity for DMC synthesis.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Yahong Han, Jinxian Zhao, Yanhong Quan, Shunan Yin, Shiping Wu, Jun Ren
Summary: The doping of La2O3 into CeO2 resulted in decreased grain size of Ni particles, increased Ni electron cloud density, and accelerated CO dissociation, leading to improved CO methanation activity. Additionally, enhanced oxygen vacancies were helpful in improving the anticoking properties of the catalyst.
Article
Engineering, Chemical
Ruina Shi, Jinxian Zhao, Yanhong Quan, Yongli Pei, Xuhui Wang, Zhong Li, Jun Ren
Summary: The strategy of wrapping metal nanoparticles in graphene shells to design highly active and stable catalysts shows promising potential. The nitrogen-doped graphene-coated copper nanoparticles composite exhibited superior catalytic performance and stability in reactions such as the oxidative carbonylation of methanol to dimethyl carbonate.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Yongli Pei, Yanhong Quan, Xuhui Wang, Jinxian Zhao, Ruina Shi, Zhong Li, Jun Ren
Summary: Cu/NCNS-x catalysts were fabricated to address deactivation issues in DMC synthesis caused by Cu NPs. The study revealed the mechanism of Cu reconstruction during the reaction process.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Shiping Wu, Wei Sun, Xuhui Wang, Jinxian Zhao, Yan Li, Yanhong Quan, Jun Ren
Summary: The role of Zn promoter in the synthesis of methyl formate (MF) from methanol was investigated using density functional theory (DFT) calculations on Zn-doped Cu(111) alloy and Cu(111) surfaces. The rate determining step (RDS) was found to be the dehydrogenation of CH3O to CH2O on both surfaces, but the energy barrier was lower on the Cu3Zn(111) alloy surface. The Cu3Zn(111) alloy surface exhibited a kinetically favorable coupling for CH3O-CHO formation and effectively suppressed the formation of by-product CO.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yahong Han, Yanhong Quan, Jinxian Zhao, Jun Ren
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Chao Miao, Junjie Liu, Jinxian Zhao, Yanhong Quan, Tao Li, Yongli Pei, Xiaoliang Li, Jun Ren
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Xiaoxiong Hou, Jinxian Zhao, Junjie Liu, Yahong Han, Yongli Pei, Jun Ren
NEW JOURNAL OF CHEMISTRY
(2019)