刘民

个人信息Personal Information

副教授

博士生导师

硕士生导师

主要任职:Associate Professor

其他任职:系教工党支部书记

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:工业催化. 能源化工

办公地点:大连理工大学西校区化工实验楼B421

电子邮箱:lium@dlut.edu.cn

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Facile one-step synthesis of hierarchical porous carbon monoliths as superior supports of Fe-based catalysts for CO2 hydrogenation

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论文类型:期刊论文

发表时间:2016-01-01

发表刊物:RSC ADVANCES

收录刊物:SCIE、EI

卷号:6

期号:13

页面范围:10831-10836

ISSN号:2046-2069

摘要:A versatile strategy involving one-step desilication of coke-deposited spent zeolite catalyst was successfully developed to prepare hierarchical porous carbon monoliths (HPCMs). Such a strategy avoids the use of hard or soft templates and carbon sources, eliminates high temperature carbonization, simultaneously minimizing the emissions from processing spent catalysts. The resulting carbon exhibits a controlled morphology such as three-dimensional networks, hollow spheres or nanosheets, a high degree of graphitization and a multi-level porous structure. Its mesopore (2-50 nm) surface area can reach 522 m(2) g(-1) and both mesopore and macropore (50-350 nm) volumes are more than 1.0 cm(3) g(-1). Such hierarchical porous carbon was found to be a superior support for minimizing the nanoparticle size and enhancing the synergism of the Fe-K catalyst for promoting CO2 hydrogenation. Using such a catalyst results in increased conversion of carbon dioxide and enhanced selectivity of high value olefins (C-2-4(=)) and long-chain hydrocarbons (C-5(+)).