Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 327, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2021.111432
Keywords
gamma-Valerolactone; Butene; Al-SBA-15; Decarboxylation; Biomass energy
Categories
Funding
- National Natural Science Foundation of China [22006062, 51674131, 21373005, 51902149]
- Liaoning BaiQianWan Talents Program [LBTP2019025]
- Natural Sci-ence Foundation of Liaoning Province of China [2019-MS-156, 2021-MS-154, RC190346]
- LiaoNing Revitalization Talents Program [XLYC1907197]
- Natural Science Foundation of Liaoning University [LDGY2019009, LDGY2019014, LT2019006]
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A series of xwt%Al-SBA-15 catalysts prepared by modified wetness impregnation were investigated for gamma-valer-olactone (GVL) decarboxylation to butene. The 2.23 wt%Al-SBA-15 catalyst showed excellent catalytic performance with high GVL conversion and butene yield. Mechanism studies indicated that the decarboxylation of gamma-protonated PEA controlled the reaction speed, and the regenerated catalyst also exhibited satisfactory catalytic activity with high butene yield after multiple cycles.
A series of xwt%Al-SBA-15 catalysts prepared by modified wetness impregnation was investigated for gamma-valer-olactone (GVL) decarboxylation to butene. It was found that the impregnation of Al species not only remained the ordered mesoporous structure of parent SBA-15, but also created large amounts of Bronsted and Lewis acid sites on the surface of catalyst. The considerable amount of solid acid sites and the suitable Bronsted/Lewis acid ratio endowed 2.23 wt%Al-SBA-15 catalyst an excellent catalytic performance. Under the optimized conditions, the GVL conversion and butene yield can reach 99.8% and 96.6% at 320 degrees C, respectively. Mechanism studies indicated that the decarboxylation of gamma-protonated PEA controlled speed of the whole reaction. Moreover, the catalytic activity of regenerated 2.23 wt%Al-SBA-15 catalyst was satisfactory after eight cycle tests, and the butene yield could still reach 92.2%.
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