Preparation of Ti incorporated Y zeolites by a post-synthesis method under acidic conditions and their catalytic properties
Preparation of Ti incorporated Y zeolites by a post-synthesis method under acidic conditions and their catalytic properties
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DOI：
10.1016/j.apcata.2010.08.063
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发表时间：
2010-11
影响因子：
5.5
通讯作者：
Y. Oumi;Takuya Manabe;H. Sasaki;Toshiyasu Inuzuka;T. Sano
中科院分区：
文献类型：
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作者：
Y. Oumi;Takuya Manabe;H. Sasaki;Toshiyasu Inuzuka;T. Sano
采用（NH_4）_2TiF_6水溶液对脱铝USY沸石进行合成后处理，制备了含Ti的Y沸石，并用XRD、~（27）Al MAS NMR、FT-IR、SEM、TEM、UV-vis和XANES等技术对其进行了表征。结果表明，在酸性条件下，钛物种以四面体形式嵌入沸石骨架中的羟基巢中。此外，在环烯烃的过氧化氢环氧化反应中，钛掺杂Y型分子筛的催化性能优于TS-1分子筛。
Ti incorporated Y zeolites were prepared by post-synthesis treatment of a dealuminated USY zeolite with an aqueous solution of (NH4)2TiF6, and characterized by XRD,27Al MAS NMR, FT-IR, SEM, TEM, UV–vis, and XANES techniques. The results showed that Ti species were tetrahedrally incorporated into the hydroxyl nests in the zeolite framework under acidic conditions. Furthermore, the catalytic performance of Ti incorporated Y zeolites in epoxidation of cycloalkenes using an aqueous solution of hydrogen peroxide was higher than that of TS-1 zeolite.