{"title":"Hydrogenation of Phenol to Cyclohexanone in Aqueous Phase on WO3 Modified Ni/ZrO2 Catalyst","authors":"Yujun Han, Yinteng Shi, Dandan Wang, Hantao Zhou, Jixiang Chen","doi":"10.1007/s10563-023-09405-y","DOIUrl":null,"url":null,"abstract":"<div><p>Ni/ZrO<sub>2</sub> (Ni/Zr) and Ni/WO<sub>3</sub>-ZrO<sub>2</sub> (Ni/<i>x</i>WZr, <i>x</i> denotes WO<sub>3</sub>/ZrO<sub>2</sub> mass ratios) were prepared by the impregnation-direct reduction method and tested for the aqueous phase hydrogenation of phenol to cyclohexanone in an autoclave reactor. It has been found that the Ni-W alloy forms in Ni/<i>x</i>WZr, and a charge transfer occurs from Ni to W. The presence of W species promotes the Ni dispersion and increases the amounts of acid sites and spilt-over hydrogen species. This leads to higher hydrogenation and direct deoxygenation activity of Ni/<i>x</i>WZr than that of Ni/Zr. In addition, the W<sup>6+</sup> and W<sup>4+</sup> species, acted as Lewis acidic sites, may stabilize cyclohexanone and the hydrogenation of cyclohexanone to cyclohexanol is inhibited. Under suitable condition, the phenol conversion and the cyclohexanone selectivity reach 93.1 and 90.6% on Ni/0.8WZr, respectively.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 4","pages":"406 - 414"},"PeriodicalIF":2.1000,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Surveys from Asia","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10563-023-09405-y","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Ni/ZrO2 (Ni/Zr) and Ni/WO3-ZrO2 (Ni/xWZr, x denotes WO3/ZrO2 mass ratios) were prepared by the impregnation-direct reduction method and tested for the aqueous phase hydrogenation of phenol to cyclohexanone in an autoclave reactor. It has been found that the Ni-W alloy forms in Ni/xWZr, and a charge transfer occurs from Ni to W. The presence of W species promotes the Ni dispersion and increases the amounts of acid sites and spilt-over hydrogen species. This leads to higher hydrogenation and direct deoxygenation activity of Ni/xWZr than that of Ni/Zr. In addition, the W6+ and W4+ species, acted as Lewis acidic sites, may stabilize cyclohexanone and the hydrogenation of cyclohexanone to cyclohexanol is inhibited. Under suitable condition, the phenol conversion and the cyclohexanone selectivity reach 93.1 and 90.6% on Ni/0.8WZr, respectively.
期刊介绍：
Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.
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