分子筛SBA-15对有机气体的吸附-脱附性能  

Adsorption-desorption behaviors of SBA-15 molecular sieves for organic gases

作　　者：金炜阳[1] 王月娟[1] 王雪俐[1] 郭美娜[1] 鲁继青[1] 罗孟飞[1] 

机构地区：[1]浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华321004

出　　处：《工业催化》2009年第11期12-15,共4页Industrial Catalysis

基　　金：浙汀省科技厅汁划项目(2008C21020)

摘　　要：以聚乙二醇-聚丙三醇-聚乙二醇为模板剂,正硅酸乙酯为硅源,在不同晶化温度下制备了比表面积和晶化不同的SBA-15介孔分子筛,用穿透曲线和程序升温脱附考察了分子筛对甲苯和乙酸乙酯的吸脱附性能。实验结果表明,随着晶化温度从80℃升高到135℃,SBA-15分子筛对有机气体吸附量减少,脱附温度降低。通过比较发现,分子筛对甲苯的吸附容量比对乙酸乙酯的吸附容量小,SBA-15分子筛呈现亲乙酸乙酯和憎甲苯的性能。SBA-15 mesoporous molecular sieves were prepared at different crystallization temperature using polyglycol-polypropanetriol-polyglycol （P123） as the template and tetraethyl orthosilicate as the sil- ica source. Adsorption-desorption behaviors of the SBA-15 molecular sieves for toluene and ethyl acetate were investigated by breakthrough curves and TPD techniques. The experimental results showed that the adsorption capacity declined while desorption temperature went down when crystallization temperature went up from 80 ℃ to 135 ℃. Adsorption capacity of the SBA-15 for ethyl acetate was much higher than that for toluene, indicating that the SBA-15 materials were philic to ethyl acetate but phobic to toluene.

关 键 词：催化化学 SBA-15分子筛 吸附-脱附 甲苯 乙酸乙酯 

分 类 号：TQ028.15[化学工程] O643.36[理学—物理化学]