Biomass-based hierarchical porous carbon with ultrahigh surface area for super-efficient adsorption and separation of acetone and methanol

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成果类型：

期刊论文

作者：

Ma, Xiancheng;Liu, Baogen;Che, Meihong;Wu, Qingding;Chen, Ruofei;...

通讯作者：

Zheng Zeng<&wdkj&>Liqing Li

作者机构：

[Wu, Qingding; Ma, Xiancheng] Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, Changsha 410004, Hunan, Peoples R China.

[Chen, Ruofei; Li, Liqing; Zeng, Zheng; Liu, Baogen; Xu, Xiang] Cent South Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China.

[Che, Meihong] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410012, Hunan, Peoples R China.

[Su, Changqing] Hunan Univ Technol & Business, Inst Big Data & Internet Innovat, Changsha 410205, Hunan, Peoples R China.

通讯机构：

[Zheng Zeng; Liqing Li] S

School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan, China

语种：

英文

关键词：

Porous carbon;Ultrahigh surface area;Oxygen groups;VOCs adsorption and separation;GCMC

期刊：

Separation and Purification Technology

ISSN：

1383-5866

年：

2021

卷：

269

页码：

118690

DOI：

10.1016/j.seppur.2021.118690

基金类别：

Scientific Research Foundation for Talented Scholars of CSUFT University [2019YJ019]; Natural Science Foundation of Hunan Province/joint fund of Changde City [2020JJ6065]; Research and development projects in key areas of Hunan Province [2019GK2244]; National Nature Science Foundation ChinaNational Natural Science Foundation of China (NSFC) [21878338]

机构署名：

本校为第一机构

院系归属：

机电工程学院

摘要：

In this study, biomass-based hierarchical porous carbons (HPCs) were synthesized by developing a cost-effective strategy that combines pyrolysis with KOH activation. The highest surface area of HPCs is up to 3936 m(2) g(-1), which presents record-high acetone (26.1 mmol g(-1) at 18 kPa) and methanol (46.9 mmol.g- 1 at 15 kPa) adsorption capacity at 25 degrees C. Based on experiments and molecular simulations, the total pore volume mainly determines adsorption amount of acetone and methanol at relatively high pressure. However, the oxygen groups can provide adsorption sites for acetone and meth...

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Biomass-based hierarchical porous carbon with ultrahigh surface area for super-efficient adsorption and separation of acetone and methanol

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