{"title":"Investigation on supported AlCl3 catalyst in the isomerization of E-1-chloro-3,3,3-trifluoropropene","authors":"Jinxin Cheng, Chengping Zhang, Hengdao Quan","doi":"10.1016/j.jfluchem.2023.110164","DOIUrl":null,"url":null,"abstract":"<div><p>By negative pressure sublimation, various supported AlCl<sub>3</sub> catalysts were prepared and further applied in the gas-phase isomerization of (<em>E</em>)-1‑chloro-3,3,3-trifluoropropene at higher temperatures ranging from 250 °C to 330 °C. Among these, the 2.0 wt%AlCl<sub>3</sub> supported on active carbon catalyst exhibited high catalytic activity within 44 h but was significantly deactivated from 44 h to 100 h. And the possible deactivation reasons of the AlCl<sub>3</sub> catalyst were first revealed as the following aspects: 1) The loss of AlCl<sub>3</sub>; 2) The covering of active sites by fluorinated olefin polymerization; 3) The conversion of AlCl<sub>3</sub> to AlCl<sub>x</sub>F<sub>3-x</sub> (0 ≤ <em>x</em> ≤ 3) leading to the significant enhancement of strong acid sites. This work will pave the way for the subsequent development of AlCl<sub>3</sub> catalyst suitable for high-temperature gas-phase reaction system.</p></div>","PeriodicalId":357,"journal":{"name":"Journal of Fluorine Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Fluorine Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022113923000799","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
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Abstract
By negative pressure sublimation, various supported AlCl3 catalysts were prepared and further applied in the gas-phase isomerization of (E)-1‑chloro-3,3,3-trifluoropropene at higher temperatures ranging from 250 °C to 330 °C. Among these, the 2.0 wt%AlCl3 supported on active carbon catalyst exhibited high catalytic activity within 44 h but was significantly deactivated from 44 h to 100 h. And the possible deactivation reasons of the AlCl3 catalyst were first revealed as the following aspects: 1) The loss of AlCl3; 2) The covering of active sites by fluorinated olefin polymerization; 3) The conversion of AlCl3 to AlClxF3-x (0 ≤ x ≤ 3) leading to the significant enhancement of strong acid sites. This work will pave the way for the subsequent development of AlCl3 catalyst suitable for high-temperature gas-phase reaction system.
期刊介绍：
The Journal of Fluorine Chemistry contains reviews, original papers and short communications. The journal covers all aspects of pure and applied research on the chemistry as well as on the applications of fluorine, and of compounds or materials where fluorine exercises significant effects. This can include all chemistry research areas (inorganic, organic, organometallic, macromolecular and physical chemistry) but also includes papers on biological/biochemical related aspects of Fluorine chemistry as well as medicinal, agrochemical and pharmacological research. The Journal of Fluorine Chemistry also publishes environmental and industrial papers dealing with aspects of Fluorine chemistry on energy and material sciences. Preparative and physico-chemical investigations as well as theoretical, structural and mechanistic aspects are covered. The Journal, however, does not accept work of purely routine nature.
For reviews and special issues on particular topics of fluorine chemistry or from selected symposia, please contact the Regional Editors for further details.
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