Hydroconversion of Waste Cooking Oil into Bio‐Jet Fuel over a Hierarchical NiMo/USY@Al‐SBA‐15 Zeolite. Issue 3 (22nd January 2018)

• Record Type: Journal Article
• Authors: Zhang, Zongwei; Wang, Qingfa; Chen, Hao; Zhang, Xiangwen
• Is Part Of: Chemical engineering & technology. Volume 41:Issue 3(2018)
• Page Start: 590
• Page End: 597
• Publication Date: 2018-01-22
• Subjects: Biofuel -- Core‐shell hierarchical zeolite -- Hydrodeoxygenation -- Waste cooking oil; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201600601
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: The direct conversion of waste cooking oil (WCO) into bio‐jet fuel was investigated over a core‐shell hierarchical USY@Al‐SBA‐15 zeolite‐supported NiMo catalyst. The core‐shell structure showed better acid and pore size distributions. The synergetic effect of the core‐shell micropore and mesopore structure significantly contributed to enhancing the selectivity for the jet fuel (C9–15 hydrocarbons) from 9.3 % over NiMo/USY up to 35.7 % over NiMo/USY@Al‐SBA‐15, with high isomerization ( iso‐/n‐ paraffins ratio = 2.7) and moderate aromatic fraction (18.7 %). The decarboxylation reaction was selectively enhanced. Optimal selectivity for jet fuel (39.7 %) was obtained at 380 °C and a high H2 /oil ratio would decrease the yield of jet fuel. This catalyst showed excellent stability for the hydroconversion of WCO to hydrocarbons. Abstract : A core‐shell NiMo/USY@Al‐SBA‐15 catalyst with hierarchical pores was designed and synthesized for the conversion of waste cooking oil to jet fuel. The synergetic effect of the core‐shell micropore/mesopore structure enhanced the selectivity for jet fuel and the stability of the catalyst. A high H2 /oil ratio was not favorable to improve the selectivity for C9–15 hydrocarbons.