Catalytic hydrotreatment of humins into cyclic hydrocarbons over solid acid supported metal catalysts in cyclohexane

• 作者: Junmin Sun Hai Cheng Yao Zhang Yinmin Zhang Xunfeng Lan Yongfeng Zhang Qineng Xia Daqian Ding
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（2）
• 页码范围: 329-339
• 页数: 11页
• 语种: 英文

摘要

Humins are common undesirable sideproducts during many acid-catalyzed reactions in renewable biomass platform conversion.However,few studies have been reported to the efficient utilization of humins.For the first time,the selective catalytic conversion of biomass-derived humins into cyclic hydrocarbons with high conversion rate and selectivity is presented using a home-made Ru/W-P-Si-O bifunctional catalyst.The multistage polymerization structure of humins was studied through controlled experiments.Results show that the C-C bond network can be efficiently depolymerized at a mild reaction temperature of 340-380 ℃,catalyzed by the cooperative catalysis of nano-Ru particles and porous strong Lewis solid acid.Particularly,95.4％ conversion of humins was achieved under the optimal condition with up to 88.3％ yield of cyclic hydrocarbons.The detailed composition after liquefaction was also analyzed.This study paves the way for the efficient production of cyclic and aromatic hydrocarbons from furan-derived humin polymer through Lewis acid-catalyzed Diels-Alder reactions between furan rings.