Effects of chemical modification of petroleum cokes on the properties of the resulting activated carbon

被引：57

作者：

Jiang, Baocheng ^{[1
]}

Zhang, Yongchun ^{[1
]}

Zhou, Jinxia ^{[2
]}

Zhang, Kun ^{[1
]}

Chen, Shaoyun ^{[1
]}

机构：

[1] Dalian Univ Technol, Dept Catalyt Chem & Engn, State Key Lab Fine Chem, Dalian 116012, Peoples R China

[2] Dalian Univ Technol, Coll Environm & Chem Engn, Dalian 116622, Peoples R China

来源：

FUEL | 2008年 / 87卷 / 10-11期

关键词：

chemical modification; petroleum coke; activated carbon;

D O I：

10.1016/j.fuel.2007.11.010

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Activated carbons have been prepared from petroleum cokes by the combination of a chemical treatment with HClO4 or H2O2 and a chemical activation with KOH at a constant KOH/coke ratio of 3/1. The influence of different chemical treatments on the properties of the activated carbon precursors and final carbons activated with KOH was invested by using XRD, FTIR, and BET techniques. XRD results indicated that the value of interplanar distance d(002) increased by chemical treatment and the disappearance of the peak corresponding to 0 0 2 faces correlated to high specific surface area. FTIR studies showed that chemical modification promoted the formation of surface oxygen functionalities. Significant effects on BET surface area, pore texture and iodine adsorption capacity were evidenced. The results show that chemical modification prior to activation dramatically increased the BET surface area and total pore volume of the resulting activated carbon. Modified petroleum coke based activated carbon with chemical activation had higher specific surface area (2336 m(2)/g) and better iodine adsorption value (1998 mg/g). (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1844 / 1848

页数：5

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