AlSi—ZSM—48沸石分子筛的合成及其催化性能.pdf

第24卷第2期 2003年2月 February2003 文章编号:(2003)02—011904 ,滕加伟,宋庆英,谢在库,陈庆龄(中国石油化工股份有限公司上海石油化工研究院,上海201208) 研究论文:119~122 摘要:考察了以廉价的1,6一己二胺为模板剂合成A1Si—,合成体系的碱度和盐类的加入对A1Si—ZSM一48沸石的合成影响极大,(OH)/n(Si) 时得不到A1Si—ZSM一48沸石,盐类如NaF和NaC1等的加入会抑制A1Si—ZSM一48的生成,,A1Si—,可以得到高收率的丙烯和乙烯,两种烯烃的总收率可达40% 以上. 关键词:ZSM一48分子筛,合成,醚化丁烯,裂解,丙烯,乙烯中图分类号:0643 文献标识码:A SynthesesofAISi-ZSM-48ZeolitesandTheirCatalyticPerformance ZHAOGuoliang,TENGJiawei,SONGQingying,XIEZaiku,CHENQingling (ShanghaiResearc’hInstituteofPetrel'hemicalTechnology,SINOPEC,Shanghai201208,China) Abstract:ZSM一48iSahighsilicazeolitewithdisorderedstructureconsistingofferrieritesheetlinkediabridg— ingoxygenlocatedonmirrorplatesandcharacterizedbyten—memberedrings,ratinglinear ×—ZSM一48zeolitesamples withdifferent"(Si()2)/"(A1,03)essfullyinthehydrothermalsystemwhichconsistedof Na20,Si02,Al2O3andH2N(CH2)6NH2,andthesampleswerecharacterizedbyXRD, resultsshowedthatboththealkalinityofthesystemandtheintroductionofthesaltsplayedakeyroleinproduc— "(0H~)/"(SiO,) salts,suchasNaClandNaF,restrainedtheformationofAISi—ZSM一48,whichwouldresultintheformationof othercrystalimpurities