化工进展2015，Vol.34Issue(12)：4305-4309,4323,6.DOI:10.16085/j.issn.1000-6613.2015.12.028
CO2/N2开关型脒基表面活性剂软模板制备介孔二氧化硅
Synthesis of mesoporous silica using CO2/N2switchable surfactant as soft templates
摘要
Abstract
Template method is used widely to synthesize mesoporous silica. However,the mesoporous structure can be obtained only after the templates are removed. Calcination,solvent extraction etc. are frequently used to remove conventional surfactant templates. However,these template removal methods could bring problems such as resulting structure collapse or massive consumption of solvent. In this paper,we synthesized silica using switchable surfactant of N'-dodecyl-N,N-dimethylacetamidinium bicarbonate as templates and tetraethoxysilane (TEOS) as silicon source in alkaline solution. Compared to conventional template removal method,the switchable surfactants decomposed and lost its surface activity by heating the mixture together with N2 injection when the reaction was completed. Mesoporous silica with uniform morphology,ordered mesopore,large specific surface area and pore volume was then obtained after washed with water and acetone. The effect of Na2EDTA on the order of mesopore,specific surface area,pore volume,size of pore and templates residue was discussed.关键词
表面活性剂/介孔/二氧化硅/模板剂/二氧化碳Key words
surfactant/mesoporous/silica/templates/carbon dioxide分类
化学化工引用本文复制引用
代利,郑饶君,马宇萱,蒋建中,崔正刚..CO2/N2开关型脒基表面活性剂软模板制备介孔二氧化硅[J].化工进展,2015,34(12):4305-4309,4323,6.基金项目
国家自然科学基金(20901032,21473080)及江苏省六大人才高峰计划项目. （20901032,21473080）
