{"title":"Pretreatment of Ru/TiO2 Catalysts Influences Activity and Selectivity in CO2 Hydrogenation","authors":"Göran Baade, Prof. Robert Güttel","doi":"10.1002/cite.202400139","DOIUrl":null,"url":null,"abstract":"<p>The need for a pretreatment strategy for CO and CO<sub>2</sub> hydrogenation is already known for Fe- and Co-based Fischer-Tropsch catalysts but is unexplored for Ru-based catalysts. The aim of this work was to establish a starting point from which to systematically develop pretreatment strategies to maximize the activity, selectivity, and stability of the catalyst. The results show that all pretreatment strategies tested here are equal or better than no pretreatment for the conversion of CO<sub>2</sub>. The pretreatment with CO/H<sub>2</sub> synthesis gas can double the activity, but the advantage is diminished over 80 h of experiment. In contrast, the use of dilute O<sub>2</sub> significantly increases the selectivity towards methane while pure CO<sub>2</sub> significantly increases the selectivity to higher hydrocarbons.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 5","pages":"549-553"},"PeriodicalIF":1.5000,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202400139","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemie Ingenieur Technik","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cite.202400139","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The need for a pretreatment strategy for CO and CO2 hydrogenation is already known for Fe- and Co-based Fischer-Tropsch catalysts but is unexplored for Ru-based catalysts. The aim of this work was to establish a starting point from which to systematically develop pretreatment strategies to maximize the activity, selectivity, and stability of the catalyst. The results show that all pretreatment strategies tested here are equal or better than no pretreatment for the conversion of CO2. The pretreatment with CO/H2 synthesis gas can double the activity, but the advantage is diminished over 80 h of experiment. In contrast, the use of dilute O2 significantly increases the selectivity towards methane while pure CO2 significantly increases the selectivity to higher hydrocarbons.
期刊介绍：
Die Chemie Ingenieur Technik ist die wohl angesehenste deutschsprachige Zeitschrift für Verfahrensingenieure, technische Chemiker, Apparatebauer und Biotechnologen. Als Fachorgan von DECHEMA, GDCh und VDI-GVC gilt sie als das unverzichtbare Forum für den Erfahrungsaustausch zwischen Forschern und Anwendern aus Industrie, Forschung und Entwicklung. Wissenschaftlicher Fortschritt und Praxisnähe: Eine Kombination, die es nur in der CIT gibt!
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