氢解
催化作用
木质素
钴
纳米颗粒
乙苯
有机化学
化学
热解
化学工程
工程类
作者
Wei Wu,Huizhen Liu,Haihong Wu,Bingxiao Zheng,Shitao Han,Kaili Zhang,Xuelei Mei,Caiyun Xu,Min He,Buxing Han
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2021-08-20
卷期号:9 (35): 11862-11871
被引量:14
标识
DOI:10.1021/acssuschemeng.1c03685
摘要
Catalytic conversion of renewable lignin to aromatics can effectively alleviate the fossil resource crisis. Herein, we prepared porous nitrogen-doped carbon-supported cobalt nanoparticle catalyst (CoNC) using a SiO2 template and tested its catalytic performance for cleavage of the β-O-4 ether bond in lignin model compounds. It was found that the catalyst pyrolyzed in a nitrogen atmosphere at 900 °C (CoNC-900) could catalyze 2-phenoxyacetophenone to ethylbenzene and phenol effectively, affording both in 99.0% yields. Further study indicated that the catalytic system was efficient for transformation of various β-O-4 ketones with methoxyl groups with high yields of desired products. The excellent catalytic performance was related to the cobalt nanoparticles, large pore volume, and specific surface area. Furthermore, the catalyst could be reused five times without obvious loss of the activity, indicating its stability during the reaction process. The reaction pathway was studied on the basis of some control experiments.
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