Efficient and stable SiO2-encapsulated NiPt/HY catalyst for catalytic cracking of β-O-4 linkage compound

Wenjing Song, Mengxue Song, Wenqing Cai, Weichu Li, Xingmao Jiang, Weiping Fang and Weikun Lai

Renewable Energy, 2022, vol. 198, issue C, 334-342

Abstract: Development of highly active and stable catalyst for C–O bonds cracking is important in biomass conversion, in this work, we report a SiO2-encapsulated NiPt/HY core-shell catalyst for phenethoxybenzene (PEB) catalytic cracking. The as-grown silica shell with defined pores serves as a ‘storage’ to enhance local concentration of PEB and intermediate isomers and promotes catalytic cracking on NiPt/HY core. With the increase of silica shell thickness from 0 to 40 nm, PEB reaction rate has increased more than five times, and the major cracking product selectivity is raised to above 90%, which is attributed to the continuous conversion of PEB isomers within the shell. This designed structure endows the NiPt/HY@SiO2 with a high activity and no obvious deactivation in PEB cracking to corresponding phenol and aromatics. The outstanding performance benefit from the enrichment effect on the unique core-shell structure, as well as the moderate acidity originated from silica regulation. This work can be extended to the modulation of microenvironment to promote the catalytic behavior of core-shell catalysts.

Keywords: Silica-encapsulated; Core-shell; Enrichment effect; Adsorption; Catalytic cracking (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:198:y:2022:i:c:p:334-342

DOI: 10.1016/j.renene.2022.08.042

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