Sudden heating of H3PO4-loaded coconut shell in CO2 flow to produce super activated carbon and its application for benzene adsorption

被引：53

作者：

Zhang, Zongbo ^{[1
]}

Lei, Yuqi ^{[1
]}

Li, Dawei ^{[2
]}

Zhao, Jiawei ^{[1
]}

Wang, Yankui ^{[1
]}

Zhou, Guangyan ^{[1
]}

Yan, Caiwen ^{[3
]}

He, Quanxi ^{[4
]}

机构：

[1] China Univ Petr East China, Coll Mech & Elect Engn, Qingdao 266580, Peoples R China

[2] China Univ Petr East China, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China

[3] Jingzhou Huarong Activated Carbon Co Ltd, Huaihua 418400, Peoples R China

[4] Gongyi Cheyuan Powdered Carbon Co Ltd, Gongyi 451281, Peoples R China

来源：

RENEWABLE ENERGY | 2020年 / 153卷

基金：

中国国家自然科学基金;

关键词：

Super activated carbons; Sudden heating; H3PO4; activation; CO2; Benzene adsorption; PHOSPHORIC-ACID ACTIVATION; SURFACE-AREA; CHEMICAL ACTIVATION; CHEMISTRY; WASTE; H3PO4; VOCS; OPTIMIZATION; POROSITY; MIL-101;

D O I：

10.1016/j.renene.2020.02.059

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Super activated carbons (SACs) can be widely used in adsorption and separation, but it remains challenging to find a facile method to prepare such SACs. In this research, we proposed to synthesize SACs via suddenly heating H3PO4-loaded coconut shell in CO2 flow, without using a traditional slow heating step. The utilization of sudden heating instead of slow heating was favorable for saving preparation time and controlling heating process. Moreover, the SAC prepared by sudden heating at impregnation ratio of 1 in CO2 flow showed a high specific surface area of 2648 m(2)/g. The SAC made at impregnation ratio of 2 showed a large pore volume of 1.762 cm(3)/g, superior benzene adsorption capacity (1419 mg/g), and excellent recyclability (no benzene adsorption capacity loss over 7 adsorption/desorption cycles). Both H3PO4 and CO2 contributed to the development of SACs, but the latter contributed more. This research provides a new route to prepare SACs with high application potentials in benzene adsorption. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页码：1091 / 1099

页数：9