摘要
通过气相ＴｉＣｌ４对多种分子筛进行处理，用Ｈ２Ｏ２对苯乙烯的氧化反应作为探针反应，考察了所得分子筛的催化活性，发现用ＺＳＭ－５制备的催化剂的催化性能最好。得到苯乙烯的转化率可达～１２％，生成苯乙醛和环氧苯乙烷的选择性可达～５５．９％。并用ＩＲ对用ＴｉＣｌ４处理过的ＺＳＭ－５进行了表征，证实了钛原子进入ＺＳＭ－５沸石骨架，生成了钛硅分子筛。
The oxidation of styrene by H 2O 2 on several molecular sieves treated by TiCl 4 gas have been studied. The catalyst propared from ZSM 5 had high activity with conversion of styrene being 12%, and selectivity of epoxide + phenylacetaldehyde being 55.9%. IR spectra cofirmed that Ti atom had been incorporated in the framework of ZSM 5 zeolite molecular sieves treated by TiCl 4 gas.
出处
《合成化学》
CAS
CSCD
1998年第3期283-286,共4页
Chinese Journal of Synthetic Chemistry
关键词
苯乙烯
分子筛
环氧苯乙烷
双氧水
催化剂
Styrene, H 2O 2, ZSM 5, Ti Si molecular sieves, Catalytic oxidation.
