Ti－Si　Pentasil型杂原子分子筛的气团相同晶取代法制备及其羟基化性能──Ⅱ．制备条件及母体对钛进入骨架的影响

PREPARATION OF Ti-Si PENTASIL MOLECULAR SIEVES BY GAS-SOLID ISOMORPHOUS REPLACEMENT AND THEIR HYDROXYLATION PROPERTIES Ⅱ. Effect or Preparation Condition and Precursor on incorporation of Ti into Framework

Ｔｉ－Ｓｉ Ｐｅｎｔａｓｉｌ型杂原子分子筛的气团相同晶取代法制备及其羟基化性能──Ⅱ．制备条件及母体对钛进入骨架的影响郭新闻，王桂茹，王祥生（大连理工大学工业催化剂研究所，大连１１６０１２）关键词Ｔｉ－ＺＳＭ－５分子筛，杂原子分子筛，气团相同晶取代含...

he syntheses of Ti-ZSM-5 type molecular sieves by gas-solid isomorphous replacement and the influence factors, such as the ZSM-5 precursors synthesized with different templates, the particle size and SiO2/Al2O3 ratio of the precursor, the isomorphous substitution temperature and time, and the flow rate of nitrogen, on the incorporation of Ti into framework have been studied. The results show that the preparation condition and precursor have influence on the incorporation of Ti into framework, particularly, the substitution reaction time and temperature, the preparation method, the SiO2/Al2O3 ratio, crystallinity and crystal size of precursor are the important factors concerned.