硅源对IM-5分子筛合成的影响  

Effect of Silica Source on Synthesis of IM-5 Zeolite

作　　者：常魁革 杨卫亚[2] 凌凤香[1,2] 沈智奇[2] 王少军[2] 杨阳[1,2] 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001 [2]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《当代化工》2015年第5期892-895,共4页Contemporary Chemical Industry

基　　金：中国石油化工股份有限公司项目(YK512034)

摘　　要：分别以硅胶、硅酸、白炭黑、硅溶胶为硅源合成IM-5分子筛,通过XRD,SEM,N2-sorption,FT-IR,NMR,XRF对其进行了表征。结果表明,以硅溶胶为硅源合成的样品形态及尺寸最为规整,具有最高的结晶度和纯度;BET比表面积达到400 m2/g;总酸量适中,B酸含量最多,具有最高的强酸、中强酸分布,可达84%。因此在制备微孔IM-5分子筛时,硅溶胶是理想的硅源。Using silica gel,silicic acid,fumed-silica and silica sol as silica sources,the microporous IM-5 zeolites were synthesized, respectively. The synthesized samples were characterized by XRD,SEM, N2 adsorption-desorption, FT-IR, NMR and XRF. Experimental results show that, the sample synthesized by silica sol has regular structure and higher crystallinity,BET specific surface area of IM-5 can reach to 400m2 /g , total acid content is moderate, strong acid and mid-strong acid content is as high as 84% .Thus, for preparing microporous IM-5 zeolite, silica sol may be preferred silica source.

关 键 词：IM-5分子筛 动态晶化 硅源 水热合成 

分 类 号：TQ424[化学工程]