个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:中科院金属所
学位:博士
所在单位:化工学院
学科:无机化学
办公地点:大连理工大学化学楼401
联系方式:13940825088
电子邮箱:cgmeng@dlut.edu.cn
A novel pathway for the synthesis of ordered mesoporous silica from diatomite
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论文类型:期刊论文
发表时间:2014-03-15
发表刊物:MATERIALS LETTERS
收录刊物:SCIE、EI、Scopus
卷号:119
页面范围:150-153
ISSN号:0167-577X
关键字:Amorphous materials; Porous materials; Diatomite; Synthesis; MCM-41; Ionic liquid
摘要:Mesoporous silica materials were synthesized using diatomite as silica source and ionic liquid 1-hexadecyl-3-methylimidazolium bromide ([C(16)mim]Br) as the template. The effects of various experimental parameters, such as molar ratio of [C(16)mim]Br/SiO2, pH value, reaction temperature and time, were systematically investigated. The obtained samples were further characterized by X-ray powder diffraction, nitrogen absorption-desorption analyses and transmission electron microscopy. The results indicated that as-synthesized mesoporous materials possessed the ordered hexagonal mesostructure and high surface area, as well as demonstrated that ionic liquid [C(16)mim]Br was a suitable template. More favorably, as an alternative and inexpensive source of silica, diatomite could significantly reduce the cost of preparation. (C) 2014 Elsevier B.V. All rights reserved.