Facile one-step synthesis of hierarchical porous carbon monoliths as superior supports of Fe-based catalysts for CO2 hydrogenation
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Dai, Chengyi
- 合写作者：
- Zhang, Anfeng,Liu, Min,Li, Junjie,Song, Fangyu,Song, Chunshan,Guo, Xinwen
- 发表时间：
- 2016-01-01
- 发表刊物：
- RSC ADVANCES
- 收录刊物：
- SCIE、EI
- 文献类型：
- J
- 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(+)).
- 是否译文：
- 否
