Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene
A systematic study of the kinetics of supported-ionic-liquid-phase (SILP) Au catalysis (Au-IL/AC) has been established in the continuous gas-phase hydrochlorination of acetylene. We reveal that the effect of ionic liquid (IL) film on substrate diffusion can be eliminated. The reaction order of the c...
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MDPI AG
2022-09-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/9/1012 |
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| author | Bolin Wang Haifeng Zhang Yuxue Yue Changlin Li Jia Zhao |
| author_facet | Bolin Wang Haifeng Zhang Yuxue Yue Changlin Li Jia Zhao |
| author_sort | Bolin Wang |
| collection | DOAJ |
| description | A systematic study of the kinetics of supported-ionic-liquid-phase (SILP) Au catalysis (Au-IL/AC) has been established in the continuous gas-phase hydrochlorination of acetylene. We reveal that the effect of ionic liquid (IL) film on substrate diffusion can be eliminated. The reaction order of the catalyst indicates that Au is confirmed to exist as a monomer in the IL film of the Au-IL/AC system, which is different from the fast equilibrium of the “Au dimer and monomer” for the classical Au/AC catalyst. The homogeneous reaction micro-environment is confirmed for Au-IL/AC since the activation energy was little changed under both heterogeneous and homogeneous catalysis, further verifying the monatomic characteristics of Au in Au-IL/AC. Due to the supported IL film, the reaction order of hydrogen chloride was decreased from 1 to 0.5 while creating a hydrogen chloride enrichment system around Au, which provides the possibility of producing vinyl chloride with an equal substrates feed ratio. This kinetic-perspective-based revelation of the catalytic behavior of the metal active sites confined in IL film enriches and expands the SILP catalytic system for acetylene hydrochlorination. |
| first_indexed | 2024-03-10T00:28:08Z |
| format | Article |
| id | doaj.art-ecfaef247cd648c0827f1cbbc9d16992 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T00:28:08Z |
| publishDate | 2022-09-01 |
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| series | Catalysts |
| spelling | doaj.art-ecfaef247cd648c0827f1cbbc9d169922023-11-23T15:30:55ZengMDPI AGCatalysts2073-43442022-09-01129101210.3390/catal12091012Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of AcetyleneBolin Wang0Haifeng Zhang1Yuxue Yue2Changlin Li3Jia Zhao4School of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaSchool of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaIndustrial Catalysis Institute, Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaIndustrial Catalysis Institute, Zhejiang University of Technology, Hangzhou 310014, ChinaA systematic study of the kinetics of supported-ionic-liquid-phase (SILP) Au catalysis (Au-IL/AC) has been established in the continuous gas-phase hydrochlorination of acetylene. We reveal that the effect of ionic liquid (IL) film on substrate diffusion can be eliminated. The reaction order of the catalyst indicates that Au is confirmed to exist as a monomer in the IL film of the Au-IL/AC system, which is different from the fast equilibrium of the “Au dimer and monomer” for the classical Au/AC catalyst. The homogeneous reaction micro-environment is confirmed for Au-IL/AC since the activation energy was little changed under both heterogeneous and homogeneous catalysis, further verifying the monatomic characteristics of Au in Au-IL/AC. Due to the supported IL film, the reaction order of hydrogen chloride was decreased from 1 to 0.5 while creating a hydrogen chloride enrichment system around Au, which provides the possibility of producing vinyl chloride with an equal substrates feed ratio. This kinetic-perspective-based revelation of the catalytic behavior of the metal active sites confined in IL film enriches and expands the SILP catalytic system for acetylene hydrochlorination.https://www.mdpi.com/2073-4344/12/9/1012kineticsSILPionic liquid filmreaction orderacetylene hydrochlorination |
| spellingShingle | Bolin Wang Haifeng Zhang Yuxue Yue Changlin Li Jia Zhao Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene Catalysts kinetics SILP ionic liquid film reaction order acetylene hydrochlorination |
| title | Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene |
| title_full | Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene |
| title_fullStr | Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene |
| title_full_unstemmed | Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene |
| title_short | Catalytic Behavior of Au Confined in Ionic Liquid Film: A Kinetics Study for the Hydrochlorination of Acetylene |
| title_sort | catalytic behavior of au confined in ionic liquid film a kinetics study for the hydrochlorination of acetylene |
| topic | kinetics SILP ionic liquid film reaction order acetylene hydrochlorination |
| url | https://www.mdpi.com/2073-4344/12/9/1012 |
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