Article
Chemistry, Physical
Liwen Wang, Yida Xu, Teng Chen, Dali Wei, Xuefeng Guo, Luming Peng, Nianhua Xue, Yan Zhu, Mengning Ding, Weiping Ding
Summary: In this study, a ternary heterostructural catalyst CoO/CN/Ni was reported, which significantly enhanced the Faraday efficiency and current density towards methanol. The catalyst showed high electrocatalytic activity, selectivity to CH3OH, suppression of H-2 formation, and well-preserved performance during long-term testing.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Jingzheng Zhang, Bing An, Yonghua Cao, Zhe Li, Jiawei Chen, Xuefeng He, Cheng Wang
Summary: The research focuses on the activity of ZnO supported on ZrO2 in hydrogenating CO2 to methanol and emphasizes the importance of the local structure at the ZnO/ZrO2 interface in catalysis. By supporting ZnO on Zr-based metal-organic framework (MOF) nanoplates, an efficient catalyst for CO2 hydrogenation to methanol was constructed.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Wenlong Wu, Yanan Wang, Lei Luo, Menglin Wang, Zhongling Li, Yue Chen, Zhiqi Wang, Jingbo Chai, Zeyan Cen, Yongliang Shi, Jin Zhao, Jie Zeng, Hongliang Li
Summary: The hydrogenation of CO2 using renewable power-generated hydrogen is a promising way to achieve a sustainable carbon cycle. However, the role of water in CO2 hydrogenation is still debated. This study found that both too low and too high water contents hindered the synthesis of methanol over Cu/ZnO catalysts. The optimal water content was 0.11 vol. %, resulting in high methanol selectivity and CO2 conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Nor Hafizah Berahim, Noor Asmawati Mohd Zabidi, Raihan Mahirah Ramli, Nur Amirah Suhaimi
Summary: The catalytic activity and stability of Cu/ZnO/Al2O3 catalyst with the addition of tri-promoters (Mn/Nb/Zr) in methanol synthesis were investigated. Spent catalysts were characterized for their physicochemical properties using various techniques. The longevity study showed a slight reduction in catalytic activity and a decrease in CO2 conversion and methanol yield when the reaction duration was prolonged to 14 days, attributed to thermal degradation.
Article
Chemistry, Applied
Valentin L'hospital, Laetitia Angelo, Yvan Zimmermann, Ksenia Parkhomenko, Anne-Cecile Roger
Summary: CuO-ZnO-ZrO2 catalysts were synthesized via co-precipitation method to study the effect of support composition on methanol synthesis from CO2. The catalyst with 66% ZnO and 34% ZrO2 as support showed the best catalytic performance among others.
Article
Chemistry, Applied
Xiaoyu Han, Maoshuai Li, Xiao Chang, Ziwen Hao, Jiyi Chen, Yutong Pan, Sibudjing Kawi, Xinbin Ma
Summary: The development of an efficient catalyst for CO2 activation and selective conversion to methanol is crucial for addressing the issues associated with CO2's high thermal stability and controllable synthesis of methanol. This study successfully prepared hollow Cu@ZrO2 catalysts, which exhibited enhanced catalytic capacity for CO2 hydrogenation to methanol, providing insights into the catalytic mechanism and active sites.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Qian Zhang, Jing Hou, Yan Huang, Le-wu Zhan, Bin-dong Li
Summary: A novel method for the synthesis of ureas and formamides using visible-light-induced Ph3P-promoted reactions is reported. Ureas can be directly synthesized at ambient temperature and pressure without external additions. Formamides can be produced by using triisopropylsilanethiol as the hydrogen source.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Haoran Wu, Shilong Xiong, Chang-jun Liu
Summary: The argon dielectric barrier discharge (DBD) plasma decomposition of Zr(OH)4 can be used to prepare amorphous ZrO2, which acts as a support for the active catalyst In2O3/am-ZrO2 for CO2 hydrogenation to methanol. The thermal treatment of DBD generated am-ZrO2 further enhances the activity of the catalyst.
Article
Energy & Fuels
Xingzi Wang, Hai Zhang, Huang Qin, Kunming Wu, Kai Wang, Junfang Ma, Weidong Fan
Summary: This work investigates the hydrogenation of CO2 to methanol over Cu/ZnO-based catalyst by focusing on the mechanism and interface effects. Atomic doping of Cu/ZnO-X(Al,Mg,Ga,Pt,Pd,Au) catalyst was simulated to study the enhancing effect of metal promoters. Density functional theory (DFT) calculation was conducted to analyze the adsorption, thermodynamics, and kinetics of CO2 methanolization. The simulation results provide guidance for the design of high-efficiency catalysis for CO2 hydrogenation and are consistent with previous experimental results.
Article
Engineering, Environmental
Sreetama Ghosh, Joby Sebastian, Louise Olsson, Derek Creaser
Summary: This study introduces a kinetic model based on LHHW mechanism for the hydrogenation of CO2 to methanol using indium oxide catalyst, and predicts the shift in methanol yield due to the equilibrium limitation and RWGS reaction. The developed model accurately predicts the trends in the experimental data, facilitating the development of reliable reactor and process designs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Wahyu S. Putro, Yusuke Munakata, Seiichiro Ijima, Shinji Shigeyasu, Satoshi Hamura, Seiji Matsumoto, Takayoshi Mishima, Keiichi Tomishige, Jun-Chul Choi, Norihisa Fukaya
Summary: The combination of CeO2 catalyst and ethanol effectively promotes the direct synthesis of diethyl carbonate from CO2 and an orthoester. Optimized conditions yield high productivity, with orthoesters bearing longer alkyl substituents leading to higher DEC yields in the presence of ethanol. Aromatic and halide moieties in orthoesters negatively impact DEC formation.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
Tangsheng Zou, Thaylan Pinheiro Araujo, Frank Krumeich, Cecilia Mondelli, Javier Perez-Ramirez
Summary: In this study, ZnO promotion on inverse ZrO2-Cu catalysts has been demonstrated to significantly enhance the catalytic activity for CO2-to-methanol conversion, with the underlying mechanism of ZnO's structural role and interaction with copper particles identified. The obtained high methanol space-time yield indicates the potential application value of this modification in sustainable production of key commodities and fuels.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Daulet Izbassarov, Judit Nyari, Bulut Tekgul, Erkki Laurila, Tanja Kallio, Annukka Santasalo-Aarnio, Ossi Kaario, Ville Vuorinen
Summary: Research on enhancing methanol production efficiency using a numerical simulation tool, validated through experiments showing optimized parameters can increase yield within a certain range, with catalyst configuration found to have a significant impact on yield.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Giorgia Lombardelli, Mauro Mureddu, Sarah Lai, Francesca Ferrara, Alberto Pettinau, Luciano Atzori, Antonio Conversano, Manuele Gatti
Summary: An innovative Cu/Zn/Al/Zr catalyst for the conversion of CO2 and H2 into methanol was tested in laboratory scale. Fourteen experimental tests were conducted under isothermal conditions, covering a range of pressure, Gas Hourly Space Velocity and H2/CO2 molar ratio relevant to industrial applications. A kinetic model and a plug-flow model of the isothermal reactor were developed and simulated, showing reasonable agreement with experimental data. The results demonstrate the potential of the Cu/Zn/Al/Zr catalyst for CO2-to-methanol synthesis processes.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Applied
Luciano Atzori, Sarah Lai, Maria Giorgia Cutrufello, Francesca Ferrara, Alberto Pettinau, Mauro Mureddu, Elisabetta Rombi
Summary: A series of multicomponent oxide catalysts were synthesized and used for CO2 hydrogenation to methanol. The influence of catalyst composition on physicochemical properties and catalytic performance was investigated. It was found that the introduction of La2O3 favored the production of methanol, with the optimal CuO content of 50 wt%.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)