{"title":"合成气合成C2氧合物的Rh/Al2O3催化剂上Fe促进剂效应的DRIFTS研究","authors":"Fang Li, Weixing Qian","doi":"10.1007/s13203-019-00238-3","DOIUrl":null,"url":null,"abstract":"<p>DRIFTS experiments such as CO adsorption, CO-TPSR and CO+H<sub>2</sub> were designated to study the effect of Fe promoter on the key steps of C<sub>2</sub> oxygenates formation from syngas. The CO adsorption results demonstrated that Fe weakened CO adsorption and especially the bridging adsorption. It was found in CO-TPSR experiments that the catalyst with lower Fe loading is more easily dissociated while the ones with higher Fe loading own stronger hydrogenation activity. Moreover, it was observed by CO+H<sub>2</sub> experiments that Fe plays a role in stabilizing the lineally adsorbed CO species and decreasing the CO desorption rate. The catalytic performance results indicated that when Fe content is 4wt.?%, the selectivity of total C<sub>2</sub> oxygenates is the highest, which was in accordance with the DRIFTS results.</p>","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"9 3-4","pages":"211 - 219"},"PeriodicalIF":0.1250,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-019-00238-3","citationCount":"2","resultStr":"{\"title\":\"DRIFTS study of Fe promoter effect on Rh/Al2O3 catalyst for C2 oxygenates synthesis from syngas\",\"authors\":\"Fang Li, Weixing Qian\",\"doi\":\"10.1007/s13203-019-00238-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>DRIFTS experiments such as CO adsorption, CO-TPSR and CO+H<sub>2</sub> were designated to study the effect of Fe promoter on the key steps of C<sub>2</sub> oxygenates formation from syngas. The CO adsorption results demonstrated that Fe weakened CO adsorption and especially the bridging adsorption. It was found in CO-TPSR experiments that the catalyst with lower Fe loading is more easily dissociated while the ones with higher Fe loading own stronger hydrogenation activity. Moreover, it was observed by CO+H<sub>2</sub> experiments that Fe plays a role in stabilizing the lineally adsorbed CO species and decreasing the CO desorption rate. The catalytic performance results indicated that when Fe content is 4wt.?%, the selectivity of total C<sub>2</sub> oxygenates is the highest, which was in accordance with the DRIFTS results.</p>\",\"PeriodicalId\":472,\"journal\":{\"name\":\"Applied Petrochemical Research\",\"volume\":\"9 3-4\",\"pages\":\"211 - 219\"},\"PeriodicalIF\":0.1250,\"publicationDate\":\"2019-11-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1007/s13203-019-00238-3\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Petrochemical Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13203-019-00238-3\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Petrochemical Research","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1007/s13203-019-00238-3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
DRIFTS study of Fe promoter effect on Rh/Al2O3 catalyst for C2 oxygenates synthesis from syngas
DRIFTS experiments such as CO adsorption, CO-TPSR and CO+H2 were designated to study the effect of Fe promoter on the key steps of C2 oxygenates formation from syngas. The CO adsorption results demonstrated that Fe weakened CO adsorption and especially the bridging adsorption. It was found in CO-TPSR experiments that the catalyst with lower Fe loading is more easily dissociated while the ones with higher Fe loading own stronger hydrogenation activity. Moreover, it was observed by CO+H2 experiments that Fe plays a role in stabilizing the lineally adsorbed CO species and decreasing the CO desorption rate. The catalytic performance results indicated that when Fe content is 4wt.?%, the selectivity of total C2 oxygenates is the highest, which was in accordance with the DRIFTS results.
期刊介绍：
Applied Petrochemical Research is a quarterly Open Access journal supported by King Abdulaziz City for Science and Technology and all the manuscripts are single-blind peer-reviewed for scientific quality and acceptance. The article-processing charge (APC) for all authors is covered by KACST. Publication of original applied research on all aspects of the petrochemical industry focusing on new and smart technologies that allow the production of value-added end products in a cost-effective way. Topics of interest include: • Review of Petrochemical Processes • Reaction Engineering • Design • Catalysis • Pilot Plant and Production Studies • Synthesis As Applied to any of the following aspects of Petrochemical Research: -Feedstock Petrochemicals: Ethylene Production, Propylene Production, Butylene Production, Aromatics Production (Benzene, Toluene, Xylene etc...), Oxygenate Production (Methanol, Ethanol, Propanol etc…), Paraffins and Waxes. -Petrochemical Refining Processes: Cracking (Steam Cracking, Hydrocracking, Fluid Catalytic Cracking), Reforming and Aromatisation, Isomerisation Processes, Dimerization and Polymerization, Aromatic Alkylation, Oxidation Processes, Hydrogenation and Dehydrogenation. -Products: Polymers and Plastics, Lubricants, Speciality and Fine Chemicals (Adhesives, Fragrances, Flavours etc...), Fibres, Pharmaceuticals.
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