Janaki Komandur, Vasu Chaudhary, Ravikrishnan Vinu and Kaustubha Mohanty*,
{"title":"红泥负载镍和钴催化剂用于棕榈酸加氢脱氧:对反应途径、产物选择性和催化剂可回收性的见解","authors":"Janaki Komandur, Vasu Chaudhary, Ravikrishnan Vinu and Kaustubha Mohanty*, ","doi":"10.1021/acs.energyfuels.5c0113510.1021/acs.energyfuels.5c01135","DOIUrl":null,"url":null,"abstract":"<p >Understanding the hydrodeoxygenation (HDO) of linear chain fatty acids is crucial for the conversion of waste oils and biomass into sustainable aviation fuels. In this study, red mud, a byproduct of bauxite ore processing, was used as a support material for Ni and Co metals. X-ray diffraction (XRD) confirmed the impregnation of metals, and X-ray photoelectron spectroscopy (XPS) analyzed their electronic states. Catalyst performance was evaluated by HDO of palmitic acid, studying the effects of catalyst type, temperature, time, and hydrogen pressure on the selectivity and conversion. At 240 °C, 5 MPa, and 4 h, high selectivity for hexadecanol (10%) and hexadecane (87%) was obtained, and hence, the catalyst recycle at this condition was observed up to 5 cycles. Optimal operating conditions shifted the pathway from decarboxylation (DCX) to HDO. Lower temperatures and pressures favored hexadecanol, while hexadecane formation was favorable at higher pressures. Fourier Transfer Infrared spectroscopy (FTIR), XRD, XPS, thermogravimetric analysis (TGA) indicated coke formation after recycling.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 19","pages":"8964–8976 8964–8976"},"PeriodicalIF":5.3000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Red Mud-Supported Ni and Co Catalysts for Hydrodeoxygenation of Palmitic Acid: Insights into Reaction Pathway, Product Selectivity, and Catalyst Recyclability\",\"authors\":\"Janaki Komandur, Vasu Chaudhary, Ravikrishnan Vinu and Kaustubha Mohanty*, \",\"doi\":\"10.1021/acs.energyfuels.5c0113510.1021/acs.energyfuels.5c01135\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Understanding the hydrodeoxygenation (HDO) of linear chain fatty acids is crucial for the conversion of waste oils and biomass into sustainable aviation fuels. In this study, red mud, a byproduct of bauxite ore processing, was used as a support material for Ni and Co metals. X-ray diffraction (XRD) confirmed the impregnation of metals, and X-ray photoelectron spectroscopy (XPS) analyzed their electronic states. Catalyst performance was evaluated by HDO of palmitic acid, studying the effects of catalyst type, temperature, time, and hydrogen pressure on the selectivity and conversion. At 240 °C, 5 MPa, and 4 h, high selectivity for hexadecanol (10%) and hexadecane (87%) was obtained, and hence, the catalyst recycle at this condition was observed up to 5 cycles. Optimal operating conditions shifted the pathway from decarboxylation (DCX) to HDO. Lower temperatures and pressures favored hexadecanol, while hexadecane formation was favorable at higher pressures. Fourier Transfer Infrared spectroscopy (FTIR), XRD, XPS, thermogravimetric analysis (TGA) indicated coke formation after recycling.</p>\",\"PeriodicalId\":35,\"journal\":{\"name\":\"Energy & Fuels\",\"volume\":\"39 19\",\"pages\":\"8964–8976 8964–8976\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2025-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy & Fuels\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.energyfuels.5c01135\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Fuels","FirstCategoryId":"5","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.energyfuels.5c01135","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Red Mud-Supported Ni and Co Catalysts for Hydrodeoxygenation of Palmitic Acid: Insights into Reaction Pathway, Product Selectivity, and Catalyst Recyclability
Understanding the hydrodeoxygenation (HDO) of linear chain fatty acids is crucial for the conversion of waste oils and biomass into sustainable aviation fuels. In this study, red mud, a byproduct of bauxite ore processing, was used as a support material for Ni and Co metals. X-ray diffraction (XRD) confirmed the impregnation of metals, and X-ray photoelectron spectroscopy (XPS) analyzed their electronic states. Catalyst performance was evaluated by HDO of palmitic acid, studying the effects of catalyst type, temperature, time, and hydrogen pressure on the selectivity and conversion. At 240 °C, 5 MPa, and 4 h, high selectivity for hexadecanol (10%) and hexadecane (87%) was obtained, and hence, the catalyst recycle at this condition was observed up to 5 cycles. Optimal operating conditions shifted the pathway from decarboxylation (DCX) to HDO. Lower temperatures and pressures favored hexadecanol, while hexadecane formation was favorable at higher pressures. Fourier Transfer Infrared spectroscopy (FTIR), XRD, XPS, thermogravimetric analysis (TGA) indicated coke formation after recycling.
期刊介绍:
Energy & Fuels publishes reports of research in the technical area defined by the intersection of the disciplines of chemistry and chemical engineering and the application domain of non-nuclear energy and fuels. This includes research directed at the formation of, exploration for, and production of fossil fuels and biomass; the properties and structure or molecular composition of both raw fuels and refined products; the chemistry involved in the processing and utilization of fuels; fuel cells and their applications; and the analytical and instrumental techniques used in investigations of the foregoing areas.