个人信息Personal Information
副教授
博士生导师
硕士生导师
主要任职:Associate Professor
其他任职:系教工党支部书记
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:工业催化. 能源化工
办公地点:大连理工大学西校区化工实验楼B421
电子邮箱:lium@dlut.edu.cn
Efficient synthesis and sulfonation of ordered mesoporous carbon materials
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论文类型:期刊论文
发表时间:2012-07-01
发表刊物:JOURNAL OF COLLOID AND INTERFACE SCIENCE
收录刊物:SCIE、EI、PubMed、Scopus
卷号:377
期号:1
页面范围:18-26
ISSN号:0021-9797
关键字:Mesoporous carbons; Self-assembly; Sulfonation; Sulfonic acid groups
摘要:Ordered mesoporous carbons (OMCs) with hexagonal structure were efficiently synthesized via cooperative self-assembly of phenol/formaldehyde resol and surfactant F127 under acidic aqueous conditions. Induced by HCl, a gel phase mainly containing phenol/formaldehyde resol and F127 was obtained within several hours. X-ray diffraction (XRD), transmission electron microscope (TEM) and nitrogen adsorption isotherms indicated that the synthesized samples possess 2-D hexagonal mesostructure. The influence of the synthesis conditions, including acid concentration and mass ratio of resol to F127, was investigated. When the acid concentration was fixed in the range of 0.6-2.0 M and the mass ratio of resol to F127 in the range of 3.5-4.0, highly ordered mesoporous carbon could be synthesized. The synthesized OMCs could be easily sulfonated in concentrated sulfuric acid at elevated temperature. The results indicate that the mesostructural stability and the content of the surface sulfonic acid (SO3H) groups depend mainly on the pyrolysis temperature of the OMCs and the sulfonation temperature, suggesting that the combination of pyrolysis and sulfonation temperature is essential for developing OMCs with high densities of SO3H groups. (C) 2012 Elsevier Inc. All rights reserved.