作　　者： ; ;

机构地区： 华东理工大学化学与分子工程学院工业催化研究所

出　　处： 《催化学报》 1998年第2期149-153,共5页

摘　　要： 以四丁基溴化铵（ＴＢＡＢｒ）＋四乙基氢氧化铵（ＴＥＡＯＨ，ｎ（ＴＢＡ＋）／ｎ（ＴＥＡ＋）＝１）或以四丙基溴化铵（ＴＰＡＢｒ）＋ＴＥＡＯＨ为模板剂，钛酸四丁酯和正硅酸乙酯为原料，于１７０℃水热合成出ＴＳ１分子筛．对合成的ＴＳ１样品进行了ＸＲＤ，ＦＴＩＲ，ＳＥＭ和ＢＥＴ比表面积分析，证实了样品中钛已进入Ｓｉｌｉｃａｌｉｔｅ１骨架．选择戊烷氧化为探针反应，考察了ＴＳ１的催化活性．结果表明以ＴＥＡＯＨ为碱，合成的样品晶粒较大，达到４～１０μｍ，用氨水和ＴＥＡＯＨ调节反应液的碱度，对晶体的生长和形貌的影响各不相同．文中还就ＴＥＡＯＨ引入的作用进行了讨论． TS1 has been synthesized successfully at 170℃ using tetrabutyl titanate as titanium source, tetraethyl orthosilicate as silicon source, and the mixture of tetraethyl ammonium hydroxide (TEAOH) and tetrabutyl ammonium bromide (or tetrapropyl ammonium bromide) as a templating reagent. XRD, IR and SEM were employed to characterize the synthesized samples. The surface area of samples was measured by BET. The results indicated that the Ti~4+ entered the framework of Silicalite1. The results of SEM also showed that the crystal size of TS1 synthesized with the mixed system was more irregular and larger than that with tetrapropyl ammonium hydroxide (TPAOH). The presence of NH_4OH and TEAOH in the synthesis gel would affect the growth and topology of zeolite crystal in a different degree. As a probe reaction, the oxidation of pentane catalyzed by TS1 synthesized was also performed. Furthermore, the function of TEAOH in preparing TS1 zeolite process was discussed.

关 键 词： 分子筛 模板剂 戊烷 氧化

领　　域： [理学] [理学] [理学] [理学]