Surface chemistry of pyrolyzed starch carbons on adsorption of ammonia and carbon disulfide

被引：7
|
作者：
Shen, Wenzhong [1 ]
Zhang, Shouchun [1 ]
Jiang, Peiming [2 ]
Liu, Yihong [2 ]
机构：
[1] Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Shanxi, Peoples R China
[2] China Univ Petr, State Key Lab Heavy Oil, Dongying 257061, Shandong, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 356卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
Pyrolyzed starch carbon; Oxidation; Adsorption; Ammonia; Carbon disulfide; ACTIVATED CARBON; WET OXIDATION; NITRIC-ACID; REMOVAL; CATALYST; FIBER; GAS; COMPLEXES; AIR;
D O I：
10.1016/j.colsurfa.2009.12.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Amylose and amylopectin were pyrolyzed at 400 degrees C and then oxidized with HNO(3) and H(2)SO(4) to modify its surface chemical properties. The pore structures and surface chemical properties of pyrolyzed carbons before and after oxidation were characterized and compared by nitrogen adsorption isotherms, thermogravimetric analysis, FT-IR spectra and SEM images. The results indicated that pore structures were hardly changed after oxidation, but the lactonic and phenolic groups could be markedly increased after oxidation, and the adsorption capacities for ammonia and carbon sulfide were enhanced. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：16 / 20
页数：5
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