{"title":"Catalytic oxidation of phenol with H2O2 over VOx/GaSiAlOx catalyst","authors":"Xiaorui Wang, Yanwei Li, Peng Dong","doi":"10.1007/s11144-024-02747-2","DOIUrl":null,"url":null,"abstract":"<div><p>The GaSiAlO<sub>x</sub> composite oxide and the VO<sub>x</sub>/GaSiAlO<sub>x</sub> series catalysts have been prepared through the hydrothermal synthesis method. Meanwhile, the physicochemical properties of the catalysts were characterized by means of XRD, SEM, TEM, XPS and FT-IR, and tested in the hydroxylation reaction of phenol. The morphology of the synthesized gallium-doped GaSiAlO<sub>x</sub> composite oxide was 3D cross-linked and coral-like from the SEM characterization. Meanwhile, the XPS characterization results indicate that when Ga was added, the valence state of the active center of the catalyst could be precisely regulated. Based on the precise regulation of the vanadium valence state by Ga₂O₃, the VO<sub>x</sub>/GaSiAlO<sub>x</sub> catalysts exhibited highly efficient catalytic activity. Under the optimal reaction conditions, the conversion rate of phenol was 71.4% and the selectivity for dihydroxybenzene was 92.3%.</p></div>","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":"138 2","pages":"743 - 752"},"PeriodicalIF":1.7000,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Kinetics, Mechanisms and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-024-02747-2","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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Abstract
The GaSiAlOx composite oxide and the VOx/GaSiAlOx series catalysts have been prepared through the hydrothermal synthesis method. Meanwhile, the physicochemical properties of the catalysts were characterized by means of XRD, SEM, TEM, XPS and FT-IR, and tested in the hydroxylation reaction of phenol. The morphology of the synthesized gallium-doped GaSiAlOx composite oxide was 3D cross-linked and coral-like from the SEM characterization. Meanwhile, the XPS characterization results indicate that when Ga was added, the valence state of the active center of the catalyst could be precisely regulated. Based on the precise regulation of the vanadium valence state by Ga₂O₃, the VOx/GaSiAlOx catalysts exhibited highly efficient catalytic activity. Under the optimal reaction conditions, the conversion rate of phenol was 71.4% and the selectivity for dihydroxybenzene was 92.3%.
期刊介绍：
Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields:
-kinetics of homogeneous reactions in gas, liquid and solid phase;
-Homogeneous catalysis;
-Heterogeneous catalysis;
-Adsorption in heterogeneous catalysis;
-Transport processes related to reaction kinetics and catalysis;
-Preparation and study of catalysts;
-Reactors and apparatus.
Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.
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