M-ZSM-12型沸石的合成与物化性能的研究

STUDY ON SYNTHESIS AND PHYSICOCHEMICAL PROPERTIES OF M-ZSM-12 TYPE ZEOLITES

本文通过水热晶化法合成杂原子M-ZSM-12沸石(M=B,Al、Ge、Ga、Fe)。系统地研究了它们的热稳定性、表面酸性以及吸附性能,并对它们的乙苯裂化和脱氢反应的催化活性进行了评价。结果说明杂原子同晶取代是一种对沸石改性的有应用价值的方法。

Various hetero-atom M-ZSM-12 type zeolites (M=B, Al, Ge, Ga, Fe) were synthesized by hydrothermal crystalization method. Their thermostability, surface acidity and adsorption properties were studied systematically, and their catalytic-activity for the cracking and dehydrogenation of ethylbenzene was appraised. It suggests that the substitution of framework Si atom by a hetero-atom can be an useful method for the modification of zeolites.