期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 8, 期 21, 页码 7785-7794出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b07367
关键词
biochar; hydrophobicity; superacidity; alkylation; high-density biofuel
资金
- National Natural Science Foundation of China [21878138, 21666021, 21706112]
- Postdoctoral Science Foundation of China [2017M622104, 2018T110660]
- Postdoctoral Science Foundation of Jiangxi Province [2017KY21, 2017RC23]
- Nanchang University
- Arizona State University
Developing sulfonic-acid-supported catalysts with superacidity and hydrophobicity is of great importance for many acid-catalyzed reactions where H2O is generated. Herein, a novel hydrophobic superacidic biochar is first reported via a diazo grafting method using halogen-substituted amino-benzenesulfonic acids and 4-tert-butylaniline as sulfonating and hydrophobic reagents, respectively. The resultant biochar has a high Brunauer-Emmett-Teller (BET) surface area (400-700 m(2).g(-1)), acid concentration (up to 1.5 mmol.g(-1)), and H2O contact angle (above 134 degrees). The synergistic effect of superacidity and hydrophobicity greatly improves the catalytic alkylation reactions of 4-ethylphenol-phenylmethanol and 2-methylfuran-cyclic ketones for the synthesis of renewable high-density fuels. The hydrophobic superacidic biochar shows higher catalytic conversion and selectivity than those of its counterparts without hydrophobicity or superacidity. Meanwhile, it is also far superior to commercial Amberlyst-15 and the traditional sulfonated Finally, the catalyst is stable without obvious activity reduction after cycling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据