{"title":"Photothermal catalytic selective oxidation of isobutane to methacrylic acid over keggin-type heteropolyacid","authors":"Yichuan Wang, Xiao Sun, Zeyue Wei, Xuanyu Zhang, Weixin Huang","doi":"10.1063/1674-0068/cjcp2305056","DOIUrl":null,"url":null,"abstract":"Thermal and photothermal catalytic selective oxidation of isobutane to methacrylic acid (MAA) are comparatively studied over a keggin-type Cs2.9Cu0.34V0.49PMo12O40 heteropolyacid acid. An introduction of light was observed to enhance both the i-C4H10 conversion and the MAA selectivity, and consequently the MAA formate rate, particularly at low temperatures. Characterization results show that oxidation of methacrolein (MAL) to MAA is the rate-limiting step while UV light illumination promotes the oxidation of σ-bonded MAL with OH groups to σ-bonded MAA on the catalyst surface. These results demonstrate a synergistic effect of thermal catalysis and photocatalysis in selective oxidation of isobutane to MAA, which suggests photothermal catalysis as a promising strategy to catalyze the selective oxidation of higher hydrocarbons at relative mild reaction conditions.","PeriodicalId":10036,"journal":{"name":"Chinese Journal of Chemical Physics","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Chemical Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/1674-0068/cjcp2305056","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Thermal and photothermal catalytic selective oxidation of isobutane to methacrylic acid (MAA) are comparatively studied over a keggin-type Cs2.9Cu0.34V0.49PMo12O40 heteropolyacid acid. An introduction of light was observed to enhance both the i-C4H10 conversion and the MAA selectivity, and consequently the MAA formate rate, particularly at low temperatures. Characterization results show that oxidation of methacrolein (MAL) to MAA is the rate-limiting step while UV light illumination promotes the oxidation of σ-bonded MAL with OH groups to σ-bonded MAA on the catalyst surface. These results demonstrate a synergistic effect of thermal catalysis and photocatalysis in selective oxidation of isobutane to MAA, which suggests photothermal catalysis as a promising strategy to catalyze the selective oxidation of higher hydrocarbons at relative mild reaction conditions.
期刊介绍：
Chinese Journal of Chemical Physics (CJCP) aims to bridge atomic and molecular level research in broad scope for disciplines in chemistry, physics, material science and life sciences, including the following:
Theoretical Methods, Algorithms, Statistical and Quantum Chemistry
Gas Phase Dynamics and Structure: Spectroscopy, Molecular Interactions, Scattering, Photochemistry
Condensed Phase Dynamics, Structure, and Thermodynamics: Spectroscopy, Reactions, and Relaxation Processes
Surfaces, Interfaces, Single Molecules, Materials and Nanosciences
Polymers, Biopolymers, and Complex Systems
Other related topics
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