催化作用
介孔材料
产量(工程)
无定形固体
多孔性
材料科学
脱羧
丁烯
路易斯酸
比表面积
化学工程
化学
有机化学
乙烯
复合材料
工程类
作者
Weijun Shan,Ruixi Yang,Yushan Jia,Xianghan Liu,Xinwei Du,Haibiao Yu,Ying Xiong
出处
期刊:Chemcatchem
[Wiley]
日期:2023-11-27
卷期号:16 (3)
被引量:3
标识
DOI:10.1002/cctc.202300992
摘要
Abstract In this study, porous amorphous SiO 2 −Al 2 O 3 (ASA(Si/Al= x )) with different Si/Al ratios was synthesized by gel‐gel method, and used to catalyze green renewable energy source γ‐valerolactone (GVL) to butene. Research indicated that all prepared catalysts had large amounts of disordered mesoporous with the pore size in range of 2–13 nm. For the optimal ASA(Si/Al=20) catalyst, its specific surface area is 430.20 m 2 g −l and pore size is about 8.13 nm. Due to the presence of suitable Al species, ASA(Si/Al=20) has the largest Brønsted/Lewis ratio and 0.5554 mmol g −1 weak acid site content. Under the optimized reaction conditions, 90 % butene yield can be obtained in 180 min at 300 °C. In addition, the regeneration performance of the ASA(Si/Al=20) catalyst is also satisfactory, and the yield of butene can be above 60 % after 5 th cycles. After activation, the spent catalyst can be regenerated, and about 78 % butene yield can be also obtained.
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