{"title":"Nickel-Based Catalysts for Dry Reforming of Methane in the Absence/Presence of H2S: Effect of SiO2 and Cu","authors":"Dekang Li, Zhixian Bao, Lijun Jin, Haoquan Hu","doi":"10.1021/acs.iecr.4c03022","DOIUrl":null,"url":null,"abstract":"Dry reforming of methane (DRM) can utilize methane and carbon dioxide to produce synthesis gas. The nickel-based catalysts used in the DRM are easily poisoned by H<sub>2</sub>S in the feed gas. This study evaluated the effect of SiO<sub>2</sub> and Cu on the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst during DRM in the absence/presence of H<sub>2</sub>S. XRD, N<sub>2</sub> adsorption/desorption, TEM, XPS, H<sub>2</sub>-TPR, CO<sub>2</sub>-TPD, and TGA were used to characterize the catalysts. The results show that in the absence of H<sub>2</sub>S, adding SiO<sub>2</sub> can effectively reduce the amount of coke on the catalyst surface, whereas adding Cu can effectively change the nature of coke to more reactive filament carbon. The presence of H<sub>2</sub>S facilitates coke deposition on the catalyst surface. The synergistic effect of strengthening the metal–support interaction by SiO<sub>2</sub> and absorbing H<sub>2</sub>S by Cu results in simultaneous coke and sulfur resistance of the NiAl1Si3Cu catalyst.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"19 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial & Engineering Chemistry Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1021/acs.iecr.4c03022","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Dry reforming of methane (DRM) can utilize methane and carbon dioxide to produce synthesis gas. The nickel-based catalysts used in the DRM are easily poisoned by H2S in the feed gas. This study evaluated the effect of SiO2 and Cu on the Ni/Al2O3 catalyst during DRM in the absence/presence of H2S. XRD, N2 adsorption/desorption, TEM, XPS, H2-TPR, CO2-TPD, and TGA were used to characterize the catalysts. The results show that in the absence of H2S, adding SiO2 can effectively reduce the amount of coke on the catalyst surface, whereas adding Cu can effectively change the nature of coke to more reactive filament carbon. The presence of H2S facilitates coke deposition on the catalyst surface. The synergistic effect of strengthening the metal–support interaction by SiO2 and absorbing H2S by Cu results in simultaneous coke and sulfur resistance of the NiAl1Si3Cu catalyst.
期刊介绍:
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.