Article
Engineering, Chemical
Zareta M. Matieva, Natalia Kolesnichenko, Yulia M. Snatenkova, Alexander A. Panin, Anton L. Maximov, A. V. Topchiev
Summary: This study demonstrated the direct conversion of CO2 to liquid hydrocarbons using a combination of CuZnAl/Al2O3 and Zn-HZSM-5 catalysts. The best performance was achieved with a CuZnAl-Al2O3/Zn-HZSM-5 physical mixture catalyst in a 1:1 weight ratio. Under specific experimental conditions, the CO2 conversion rate was 20%, with a selectivity of 47% for C5+ hydrocarbons (78% based on total hydrocarbons), and a selectivity of methane below 2%.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Multidisciplinary
Febrian Hillman, Mohamad Rezi Abdul Hamid, Panagiotis Krokidas, Salvador Moncho, Edward N. Brothers, Ioannis G. Economou, Hae-Kwon Jeong
Summary: The delayed linker addition (DLA) synthesis strategy allows for efficient incorporation of Im linkers into ZIF-8 framework, improving gas separation performance. The Im/ZIF-8 synthesized via DLA demonstrates outstanding performance in gas separation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Energy & Fuels
Fatima Jalid, Tuhin Suvra Khan, M. Ali Haider
Summary: By employing first principles theoretical analysis and microkinetic modelling, bimetallic alloy catalysts of cobalt, palladium, and copper have been designed for CO2 assisted ethane dehydrogenation reaction. Through in silico simulations, certain alloy catalysts have been identified that can maintain high ethane and CO2 conversion rates, increase ethylene yield, and reduce coke formation, making them potential candidates for experimental testing and scale-up studies.
Article
Chemistry, Physical
Faen Song, Xiaojing Yong, Xuemei Wu, Wei Zhang, Qingxiang Ma, Tiejian Zhao, Minghui Tan, Zhongshan Guo, Heng Zhao, Guohui Yang, Noritatsu Tsubaki, Yisheng Tan
Summary: The capsule catalyst FeMn@HZSM-5 was shown to effectively reduce CO2 formation and increase olefins selectivity in Fischer-Tropsch to olefins (FTO) reaction, outperforming other physically mixing catalysts. The HZSM-5 shell played a key role in affecting H2O diffusion and suppressing the water-gas shift reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Xinyi Tan, Chang Yu, Xuedan Song, Li Ni, Hanyu Xu, Yuanyang Xie, Zhao Wang, Song Cui, Yongwen Ren, Wenbin Li, Yafang Zhang, Jieshan Qiu
Summary: By manipulating catalyst-electrolyte interfaces in saturated KCl electrolyte, the CO tolerance and activity of Pd/C catalyst can be enhanced. The reconstructed Pd/C catalysts exhibit high activity and stability in the presence of high concentrations of CO. These findings are important for the design and fabrication of active and stable Pd-based catalysts, as well as the manipulation of activity and stability at catalyst-electrolyte interfaces.
Review
Chemistry, Physical
Noelia Mota, Elena Millan Ordonez, Barbara Pawelec, Jose Luis G. Fierro, Rufino M. Navarro
Summary: This review presents the latest progress in the synthesis of bifunctional/hybrid catalytic systems for the CO2-to-DME process, discussing the challenges of combining metal and acid functionalities in the catalyst, and the different strategies employed to improve DME formation efficiency.
Article
Engineering, Environmental
Guanfeng Tian, Youqing Wu, Shiyong Wu, Sheng Huang, Jinsheng Gao
Summary: The Pd/MnO/In2O3 catalyst prepared by an in-situ reduction method showed high catalytic activity for CO2 hydrogenation to methanol, with the methanol space-time yield of 1 wt% Pd/MnO/In2O3 being 4.8 times higher than that of MnO/In2O3. The catalyst also maintained a methanol selectivity above 70% at temperatures below 280°C. The in-situ reduction method proved to be an effective route for preparing Pd/MnO/In2O3 catalyst for CO2 hydrogenation to methanol.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Thanh Truc Nguyen Hoang, De-Hao Tsai
Summary: The conversion of CO2 into valuable fuel or chemical feedstock through hydrogenation to methanol is important for sustainable technological development. This study proposes a combined (CO2 + CO) hydrogenation process for methanol production and develops Cu-based hybrid catalysts to enhance catalytic performance. The results demonstrate that incorporating CO into the CO2 hydrogenation process can significantly increase methanol yield at relatively low temperature and moderate pressure.
APPLIED CATALYSIS A-GENERAL
(2022)
Review
Chemistry, Physical
Ali M. Bahmanpour, Matteo Signorile, Oliver Kroecher
Summary: The recent progress in catalyst design and understanding of the reaction mechanism for the RWGS reaction has led to the introduction of new promising catalysts, particularly in terms of catalyst stability at high temperatures. However, there is still room for improvement in this area for the conversion of CO2 to fuels.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Zhuping Li, Yong Men, Shuang Liu, Jinguo Wang, Keye Qin, Dandan Tian, Tianle Shi, Li Zhang, Wei An
Summary: The crystalline phases of support play a crucial role in the catalytic performance of heterogeneous catalysts. In this study, a series of Pd/In2O3/ZrO2 catalysts with different crystalline phases of ZrO2 were prepared and evaluated for CO2 hydrogenation to CH3OH. The results showed that the catalyst supported on mixed monoclinic and tetragonal phases ZrO2 exhibited superior reactivity compared to catalysts supported on single monoclinic or tetragonal ZrO2. The superior activity of the Pd/In2O3/Mix-ZrO2 catalyst could be attributed to its larger Pd particle size, higher concentration of oxygen vacancies, and abundant medium basic sites, which facilitated the activation of H-2 and inert CO2. The best-performing catalyst showed high stability and remarkable space time yield of methanol synthesis from CO2 hydrogenation.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Bouabida Seddik, Benkara Salima, Ghamri Houda
Summary: Fe-doped ZnO (FZO) nanostructures were prepared with varying Fe concentrations and their effects on the structural, morphological, optical properties, and response to iso-butane gas were studied. The results showed that Fe doping significantly influenced the performance of ZnO nanostructures, with the 3 wt.% Fe-doped ZnO exhibiting excellent sensitivity to iso-butane gas.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Xiaobo Feng, Jie Yao, Yan Zeng, Yu Cui, Shun Kazumi, Reubroycharoen Prasert, Guangbo Liu, Jinhu Wu, Guohui Yang, Noritatsu Tsubaki
Summary: Converting syngas into ethanol remains a challenge, but a new route has been opened by converting dimethyl ether to methyl acetate on zeolite and further hydrogenating to ethanol on a Cu-based catalyst. By utilizing a nano-sized ZSM-35 zeolite and an auto-reduced CuZnAl catalyst, ethanol synthesis has been achieved with stable DME conversion and MA selectivity under optimized conditions.
Article
Chemistry, Applied
Xi Zhao, Yamin Wu, Lihe Zhang, Jiayu Xin, Cui Li, Xu Zhang
Summary: Zrx/(Fe-Ce) catalyst was prepared by co-precipitation method to catalyze CO2 and ethanol for the production of diethyl carbonate (DEC). The introduction of Zr significantly improved the acid-base active sites and oxygen vacancies on the catalyst surface, resulting in higher activity and selectivity. Under optimized conditions, a high DEC selectivity of 96.7% was achieved using Zr0.1/(Fe-Ce) catalyst. Using fermentation tail gas as CO2 source, 56.0% selectivity of DEC was obtained. This study provides a new idea for the utilization of CO2 fermentation gas and the development of cleaner fuel production process.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rui Li, Chenchen Zhang, Kejia You, Bonan Li, Wei Bu, Xiangyu Meng, Baochun Ma, Yong Ding
Summary: This study proposes a molecular confined synthesis strategy to design a bifunctional photocatalyst for simulating the water oxidation and CO2 reduction reactions of photosynthesis. The prepared CoOx/Co/C-800 catalyst exhibits the best photocatalytic water oxidation activity and CO2 reduction activity. The improved photocatalytic activities are mainly attributed to the rapid electron transfer between the photosensitizer and the catalyst.
CHINESE CHEMICAL LETTERS
(2023)
Article
Multidisciplinary Sciences
Jinkyu Lim, So Young Choi, Jae Won Lee, Sang Yup Lee, Hyunjoo Lee
Summary: The integration of CO2 electrolysis with microbial fermentation was achieved to directly produce PHB from gaseous CO2. The biohybrid system comprised electrolytic conversion of CO2 to formate and subsequent conversion of formate to PHB by microbial cells. Optimization of the electrolyzer and electrolyte solution allowed for efficient accumulation of PHB. This system was further modified for continuous PHB production.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)