{"title":"Selective CO production from CO2 over a metal catalyst supported on perovskite oxide in the presence of excess hydrogen","authors":"Keigo Tashiro, Shinnosuke Sekizawa, Wataru Doi, Hikaru Konno, Kensuke Izutani, Takayuki Furukawa, Akihide Yanagita, Shigeo Satokawa","doi":"10.1039/d4cy00797b","DOIUrl":null,"url":null,"abstract":"Hydrogenation of carbon dioxide (CO<small><sub>2</sub></small>) to liquid fuels <em>via</em> an industrial catalytic reaction is the most effective strategy for the realization of carbon neutrality. The sequential reaction system of a reverse water–gas shift (RWGS) reaction followed by Fischer–Tropsch synthesis is a promising way to achieve this; hence, the development of catalysts with high conversion efficiency and selectivity for RWGS is required. We succeeded in the conversion of CO<small><sub>2</sub></small> into carbon monoxide (CO) with a selectivity of 100% in the gas phase using a platinum-loaded perovskite oxide support composed of barium and zirconium, in which 10% of zirconium was substituted with yttrium (Pt/BaZr<small><sub>0.9</sub></small>Y<small><sub>0.1</sub></small>O<small><sub>3−<em>δ</em></sub></small>, Pt/BZY10) at 500 °C in the gas stream with H<small><sub>2</sub></small>/CO<small><sub>2</sub></small> = 3. Furthermore, a ruthenium-loaded catalyst (Ru/BZY10) afforded not only CO but also methane (CH<small><sub>4</sub></small>) as gaseous products. Kinetic analysis demonstrated that the activation energy was identical for both catalysts, and Fourier transform infrared spectroscopy clarified that the surface-adsorbed methoxy group was generated as a reaction intermediate only in the case of Ru/BZY10, which indicated the ability of the loaded metal for the dissociative adsorption of hydrogen. The present research is expected to provide a new methodology for the preparation of catalysts for the RWGS reaction and a quite important insight for the realization of carbon neutrality.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Science & Technology","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4cy00797b","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Hydrogenation of carbon dioxide (CO2) to liquid fuels via an industrial catalytic reaction is the most effective strategy for the realization of carbon neutrality. The sequential reaction system of a reverse water–gas shift (RWGS) reaction followed by Fischer–Tropsch synthesis is a promising way to achieve this; hence, the development of catalysts with high conversion efficiency and selectivity for RWGS is required. We succeeded in the conversion of CO2 into carbon monoxide (CO) with a selectivity of 100% in the gas phase using a platinum-loaded perovskite oxide support composed of barium and zirconium, in which 10% of zirconium was substituted with yttrium (Pt/BaZr0.9Y0.1O3−δ, Pt/BZY10) at 500 °C in the gas stream with H2/CO2 = 3. Furthermore, a ruthenium-loaded catalyst (Ru/BZY10) afforded not only CO but also methane (CH4) as gaseous products. Kinetic analysis demonstrated that the activation energy was identical for both catalysts, and Fourier transform infrared spectroscopy clarified that the surface-adsorbed methoxy group was generated as a reaction intermediate only in the case of Ru/BZY10, which indicated the ability of the loaded metal for the dissociative adsorption of hydrogen. The present research is expected to provide a new methodology for the preparation of catalysts for the RWGS reaction and a quite important insight for the realization of carbon neutrality.
期刊介绍:
A multidisciplinary journal focusing on cutting edge research across all fundamental science and technological aspects of catalysis.
Editor-in-chief: Bert Weckhuysen
Impact factor: 5.0
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