Article
Chemistry, Physical
Xiaoguang San, Xiaohui Gong, Yiming Lu, Juhua Xu, Liming He, Dan Meng, Guosheng Wang, Jian Qi, Quan Jin
Summary: In this study, a novel MOF-derived Cu/SiO2 catalyst was developed for the hydrogenation of DMO to EG. The catalyst showed high catalytic activity and stability, with a controllable distribution of Cu active sites. Compared to traditional catalysts, the MOF-CmS catalyst exhibited higher catalytic activity.
Article
Chemistry, Applied
Gianfranco Giorgianni, Chalachew Mebrahtu, Siglinda Perathoner, Gabriele Centi, Salvatore Abate
Summary: Cu/SiO2 catalysts prepared by the deposition-decomposition (DD) method using ammonium hydroxide and pre-reduced in pure hydrogen show improved ethylene glycol (EG) yields and stability.
Article
Chemistry, Physical
Tianyou Li, Ling Lin, Chongchong Chen, Runping Ye, Long Huang, Jinxia Yang, Peng Zhang, Yeyan Qin, Jiankai Cheng, Yuangen Yao
Summary: In this study, the effect of introducing EDTA on Cu/SiO2 catalysts was systematically investigated. The introduction of an appropriate amount of EDTA not only facilitated the formation of smaller Cu nanoparticles, but also enhanced the stability of Cu species, increased the number of active sites, and strengthened the synergistic effect between Cu+ and Cu-0. The 0.08E-Cu/SiO2 catalyst exhibited the best performance and stability in the DMO hydrogenation reaction.
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
Deliang Yang, Runping Ye, Ling Lin, Rong Guo, Peiyu Zhao, Yanchao Yin, Wei Cheng, Wenpeng Yuan, Yuangen Yao
Summary: Boron (B) promoter modified Cu/SiO2 bifunctional catalysts were synthesized and used for efficient hydrogenation of dimethyl oxalate to produce ethylene glycol and ethanol. The boron promoter significantly improved the catalyst performance by enhancing structural characteristics. The optimized catalyst exhibited excellent low temperature catalytic activity and long-term stability, maintaining high selectivity for ethylene glycol and ethanol.
Article
Chemistry, Physical
Fakhrony Sholahudin Rohman, Syed Hussaini Syed Sulaiman, Norashid Aziz
Summary: The study focused on utilizing a copper-based catalyst for gas-phase dimethyl oxalate hydrogenation to produce ethylene glycol, achieving optimal conversion, selectivity, and yield through simulation software and multivariable optimization.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(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
Biotechnology & Applied Microbiology
Xiangpeng Kong, Ruihan Wu, Peihong Yuan, Yuehuan Wu, Ruihong Wang, Xiliang Chang, Man Wang, Xiaoyu Wang, Jiangang Chen
Summary: Cu-doped CoCu/ZnO catalysts were successfully synthesized and applied to the selective hydrogenation of syngas-derived dimethyl oxalate (DMO) to produce ethylene glycol (EG). The Cu content significantly influenced the properties and structures of the catalysts. The CoCu20/ZnO catalyst with 20.0 wt% Cu additive exhibited the highest DMO conversion and EG yield, and showed excellent thermal stability.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Xiangpeng Kong, Xinming You, Peihong Yuan, Man Wang, Yuehuan Wu, Ruihong Wang, Jiangang Chen
Summary: In this study, Cu catalysts reinforced by Al3+ dopants with different chemical features were successfully synthesized, and the structure evolution and interface effect were explored. The results showed that the choice of precipitants during precursor preparation significantly affected the chemical form of Al3+ and Cu/Al bonding. The CuAl catalyst achieved high ethylene glycol and ethanol yields in DMO hydrogenation. The presence of surface Cu+ sites and Cu-O-Al patterns played important roles in the catalytic behavior, with CuAl(O) catalyst exhibiting enhanced catalytic stability.
Article
Chemistry, Physical
Runping Ye, Chong Zhang, Peng Zhang, Ling Lin, Long Huang, Yuanyuan Huang, Tianyou Li, Zhangfeng Zhou, Rongbin Zhang, Gang Feng, Yuan-Gen Yao
Summary: β-cyclodextrin (β-CD) was utilized to prepare copper-based catalysts, which showed enhanced conversion, selectivity, and lifetime for the hydrogenation of dimethyl oxalate (DMO) to ethylene glycol (EG).
CATALYSIS COMMUNICATIONS
(2023)
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
Chemistry, Physical
Xianlong Gao, Guoqing Zhao, Lei Miao, Lei Li, Zhirong Zhu
Summary: In this study, a series of Cu-ZnO-ZrO2-La2O3 catalysts were synthesized for DMA hydrogenation, and it was found that the CZZ-L2-CP catalyst exhibited the highest catalytic activity. This is attributed to the presence of more oxygen vacancies, decreased electron density of surface La2O3 species, and the electron donor-acceptor interaction between lanthanum and copper species, which prevented the formation of larger copper particles.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xiangpeng Kong, Yuehuan Wu, Peihong Yuan, Man Wang, Peng Wu, Lifeng Ding, Ruihong Wang, Jiangang Chen
Summary: The synthesis of Al2O3 doped mesoporous monometallic Cu catalysts was achieved through the thermal decomposing of the self-assembly Cu species derived from the oxalate precursor. The calcination temperature during catalyst preparation was found to significantly influence the textural and surface properties of the CuAl catalysts, ultimately determining their catalytic behavior in dimethyl oxalate (DMO) hydrogenation. The CuAl-500 catalyst showed excellent performance with 100.0% DMO conversion and 98.0% ethylene glycol (EG) selectivity, outperforming other catalysts under identical reaction conditions, and demonstrated outstanding stability for more than 200 hours. Additionally, the synergistic effect between surface Cu+ and Cu-0 sites and strengthened chemical interaction between Cu and Al species play crucial roles in DMO selective hydrogenation and suppressing the agglomeration of dispersive Cu nanoparticles during DMO hydrogenation, respectively.
Article
Chemistry, Multidisciplinary
Xiaofeng Xu, Xin Hu, Zuwei Luo, Yueqiang Cao, Yi-An Zhu, Wei Li, Jinghong Zhou, Xinggui Zhou
Summary: Egg-shell-type Ag/SiO2 pellet catalysts with different thicknesses of Ag-shell were synthesized to study the diffusion effects on DMO hydrogenation to MG. The egg-shell-type catalyst with optimized Ag-shell thickness exhibited improved hydrogenation activity and MG selectivity.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Can Song, Lihong Zhao, Jie Yan, Xu Liang, Guoji Liu, Yuanli Jiang
Summary: Despite progress in coal-to-ethylene glycol technology, the obtained products differ from those produced by petroleum methods. Improving the thermodynamic performance of the system is important, and this study estimated thermodynamic data using the Benson group contribution method and calculated the values of reaction enthalpy, Gibbs free energy, and equilibrium constant in the system. Temperature was found to influence the production of dimethyl carbonate (DMC) in the dimethyl oxalate (DMO) synthesis reaction, and the DMC content affected the spontaneous formation of ethylene carbonate (EC) in the DMO hydrogenation reaction. The results showed that higher temperatures favored DMC generation, and certain limits on DMC content were identified.
Article
Engineering, Environmental
Chenxu Wang, Zhimou Wang, Jie Yu, Ke Lu, Wentao Bao, Gang Wang, Banghua Peng, Wencai Peng, Feng Yu
Summary: In this study, different types of Zn-MOFs were synthesized using a microchannel reactor with various proportions of MeOH and H2O as solvents. The microchannel reactor allowed for the synthesis of Zn-MOF structures under any solvent proportion, and different solvents influenced the morphology of Zn-MOFs. Density functional theory calculations explained why Zn-MOFs with varied morphologies could be synthesized in MeOH and H2O solvents.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Ke Lu, Zongyuan Wang, Yaoxin Wu, Xingwu Zhai, Chenxu Wang, Ju Li, Zhimou Wang, Xinyi Li, Yuxuan He, Ting An, Kun Yang, Dezheng Yang, Feng Yu, Bin Dai
Summary: In this study, perfluorooctanoic acid (PFOA), an aqueous pollutant, was degraded and captured to prepare ultrasmall WO3 decorated F-doped graphite sheets, which is of great importance for the oxygen evolution reaction (OER). The results showed that the synergistic effect of WO3 and F enhanced the electrocatalytic performance, and the material exhibited good stability in alkaline solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Xiaoping Fu, Wen Guo, Long Chen, Gang Wang, Yanyan Liu, Tiantian Gu, Feng Yu, Xuhong Guo
Summary: A nitrogen/oxygen co-doped mesoporous coal-derived carbon (N/O-DMCC) is synthesized through a facile pyrolysis treatment using raw coal as precursor. The N/O-DMCC possesses high surface area, mesoporous structure, and rich heteroatom doping content. The N/O-DMCC exhibits enhanced electrochemical capacitance and shows great potential for energy storage devices, as demonstrated by its performance in symmetric electric-double layer capacitors and zinc-ion hybrid supercapacitors.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Yue Xin, Qiuhui Zhu, Ting Gao, Ximing Li, Wei Zhang, Hui Wang, Donghang Ji, Yu Huang, Mohsen Padervand, Feng Yu, Chuanyi Wang
Summary: Water vapor has been found to have a negligible effect on the efficiency of photocatalytic NO removal, but it reduces the generation of toxic NO2 intermediate. Defective Bi/BiOBr nanoflowers were synthesized and showed significantly improved photocatalytic NO removal efficiency. The study also revealed the adsorption and removal pathway of NO using NO-TPD and in-situ DRIFTS techniques.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Jiangwei Li, Liguang Dou, Yadi Liu, Yuan Gao, Xiucui Hu, Feng Yu, Jiacong Li, Shuai Zhang, Tao Shao
Summary: Low-carbon plasma-catalysis technology shows potential for converting CO2/CH4 into H2 and value-added oxygenates at low temperatures. However, efficiently regulating the product distribution and understanding the catalytic roles of active sites remains a challenge.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Environmental
Fei Gao, Ying Tang, Jinbao Liu, Keke Pan, Mei Zhou, Gang Qian, Minmin Liu, Feng Yu, Jianming Dan, Bin Dai
Summary: In this study, a CuCe metal oxide catalyst was prepared using nickel foam as a support. The catalyst showed good activity for CO and NO removal at 200 degrees Celsius. By improving the adsorption capacity and increasing the active sites, the catalyst achieved efficient denitrification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Inorganic & Nuclear
Xiaoli Zhuang, Songtao Zhang, Yijian Tang, Feng Yu, Zhaomin Li, Huan Pang
Summary: MOFs are constructed by self-assembly of metal ions/clusters and organic linkers, and have attracted much attention for their well-exposed active sites, ultrahigh porosity, and abundant pore structures. However, poor conductivity and stability of traditional MOFs have been a concern. MXenes with high electrical conductivity and rich surface functional groups can be combined with MOFs to address this issue. In this review, the synthesis strategies and functionalities of MOF/MXene-based composites are summarized. MXenes not only enhance the stability and conductivity of single MOFs, but also bring new functionalities, such as template effect. These advantages make synthetic MOF/MXene-based composites applicable in various fields. The influences of structure on the properties of MOF/MXene-based composites are also discussed. Finally, the authors prospect the future opportunities and challenges of MOF/MXene-based composites.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Physical
Wentao Bao, Jinfeng Yang, Wenxia Yan, Ying Tang, Zhen Yang, Yunxia Zhao, Gang Wang, Shengchao Yang, Feng Yu
Summary: Methods for designing and synthesizing energy-efficient, time-saving, and economical electrocatalysts are important to advance the electrolysis of water for hydrogen production. We present a simple method for in situ synthesis of hydroxyl oxide nanosheet materials supported on nickel foam as the conductive support that is quick, and operated at room temperature and pressure. This green and pollution-free preparation method forms an oxyhydroxide layer with more active sites on the nickel foam surface, while the self-supported nanosheet arrays ensure fast electron transfer and good sta-bility.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Chemical
Dan Cui, Yanqin Li, Keke Pan, Jinbao Liu, Qiang Wang, Minmin Liu, Peng Cao, Jianming Dan, Bin Dai, Feng Yu
Summary: In this study, Cu-doped catalysts were prepared using an impregnation technique, and it was found that Cu doping can improve the efficiency and selectivity of ammonia synthesis. The findings of this study are of great significance for the development of efficient and environmentally friendly methods for ammonia synthesis.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Ying Tang, Yangyang Li, Wentao Bao, Wenxia Yan, Jie Zhang, Yifan Huang, Han Li, Zijun Wang, Minmin Liu, Feng Yu
Summary: CH4 and CO2, as greenhouse gases, can be converted into valuable syngas through solar-powered photothermal dry reforming of methane (DRM) process, which also enables solar energy collection and storage. However, conventional photothermal catalysts lack sufficient catalytic activity for enhanced light at high temperatures. In this study, a photothermal catalyst Ru/SrTiO3 is reported, which shows 1.4-1.5 times higher yields of CO and H2 compared to the thermocatalytic process under 600°C and 300-W xenon lamp irradiation. The mechanism of photothermal DRM is clarified, providing a useful guide for future solar photothermal conversion of greenhouse gases.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Jiazheng Zhou, Xin Su, Ling Luo, Junjie Li, Feng Yu
Summary: Two new alkaline metal thioboratephosphates, RbB3P2S10 and CsB3P2S10, were synthesized by the flux method. These compounds consist of alkali metal polyhedral and [B6P4S20] T3-supertetrahedral units, and crystallize in I4(1)/a and R3c space groups, respectively. The findings expand the chemical diversity of chalcogenides and provide insights for the exploration of new functional materials in thioboratephosphates.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Jun Han, Fangzhou Wu, Zhongwei Wang, Xiyu Chen, De Hu, Feng Yu, Yan Gao, Bin Dai, Wei Wang
Summary: The photocatalytic performance of graphitic carbon nitride (g-C3N4) can be effectively enhanced by adjusting its structure. A porous self-supporting carbon nitride (PSCN) was synthesized through supramolecular self-assembly. PSCN has a specific surface area of 58.50 m(2) g(-1) and enhances the contact between the catalyst and reactant, leading to an abundance of reactive active sites. The presence of N-defects in PSCN optimizes the surface electronic structure, resulting in higher performance in visible light-driven hydrogen evolution compared to pure carbon nitride (PCN), with a performance 7.8 times greater.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Yanqin Li, Junqi Tian, Zhisong Liu, Zhongqi Liu, Dong Dong, Fu Wang, Wei Wang, Minmin Liu, Jianming Dan, Yongsheng Li, Feng Yu, Bin Dai, Yunbo Yu
Summary: Photo-assisted SCR (PSCR) is a potential solution for NO removal at room temperature. MnTiOx as a PSCR catalyst shows excellent performance with 100% NO removal at room temperature. EPR analysis reveals the presence of oxygen vacancies on MnTiOx, while DFT calculations show enhanced orbital hybridization of Mn and Ti under light irradiation. The MnTiOx catalyst demonstrates excellent electron-hole separation ability, adsorbing and dissociating NH3 to form NH2 fragments and H atoms. In-situ DRIFTS indicates that optical carrier enhances NH3 adsorption on MnTiOx, resulting in excellent PSCR activity. This work presents an additional strategy for NO removal with PSCR catalysts and highlights their potential in photocatalysis.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Inorganic & Nuclear
Wenhao Wang, Lu Zhang, Yanli Kang, Xiaodong Yang, Shenguang Ge, Feng Yu
Summary: A TiO2-CoFe2O4 heterostructure was successfully prepared using a hydrothermal method for detecting toluene gas. The heterojunction exhibited a shorter bandgap and inhibited electron-hole pair recombination, leading to improved gas sensitivity. The response value of the heterojunction was significantly higher than that of pure TiO2 and CoFe2O4, especially under UV irradiation. Density functional theory was also applied in this study to explain the improvement in gas sensitivity through material energy band and adsorption energy calculations. This work provides valuable insights for the preparation of high-efficiency and high-sensitivity gas sensors.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Ge Bai, Wen Guo, Gang Wang, Bin Dai, Lu Liu, Lili Zhang, Feng Yu
Summary: Strategically upcycling industrial wastes into value-added materials is an effective way to tackle energy and environmental issues. This study focuses on synthesizing N and S co-doped petroleum coke-based activated carbon using dye wastewater as the sole dopant source. The produced activated carbon exhibits high surface area and energy density, making it suitable for various applications. The scalable and green production process allows for easy adoption and cost-effective production of functionalized carbons from wastes.
