NDLI: Designing a Mesoporous Zeolite Catalyst for Products Optimizing in n-Decane Hydrocraking

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Designing a Mesoporous Zeolite Catalyst for Products Optimizing in n-Decane Hydrocraking

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Li Tan Xiaoyu Guo Xinhua Gao Noritatsu Tsubaki
Abstract	Mesoporous ZSM-5 zeolite is developed to enhance the catalytic performance in a hydrocracking reaction. The generated mesopores and mesoporous channels in the new catalyst supply more opportunities for reactant accessing the active sites according to the better mass transfer and diffusion. Meanwhile, the acidity of the mesoporous catalyst is also weakened because of the removal of Si and Al species from its MFI structure, which makes the products distribution drift to more valued chemicals such as olefins. In the modified mesoporous ZSM-5 zeolites via different metallic promoters, the olefins’ selectivity increases as the alkalinity of the catalyst increases. The reason for this is that the formed olefins will be further hydrogenated into corresponding alkanes immediately over the extremely acidic zeolite catalyst. Hence, the moderate alkalinity will limit this process, while at the same time the remaining olefins products will too. Furthermore, the Pd-based mesoporous ZSM-5 zeolite shows an excellent n-decane conversion and high propane selectivity due to the occurrence of hydrogen spillover via the Pd promoter. The phenomenon of hydrogen spillover supplies more chemisorbed sites of hydrogen atoms for hydrocracking and hydrogenating in this reaction. In short, this study explores the important effect factors in n-decane hydrocracking reaction activity and products distribution. It also shows a potential for the further industrial application of petroleum-derived fuel hydrocracking according to the optimized products distribution under metallic promoted mesoporous zeolite.
e-ISSN	20734344
DOI	10.3390/catal9090766
Journal	Catalysts
Issue Number	9
Volume Number	9
Language	English
Publisher	MDPI AG
Publisher Date	2019-01-01
Publisher Place	Switzerland
Access Restriction	Open
Subject Keyword	Chemical Technology Chemistry Hydrocracking N-decane Zsm-5 Zeolite Mesoporous Catalyst Olefin
Content Type	Text
Resource Type	Article

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