以水热法于ZSM-5分子筛中分散MoO3的研究

热扩散法的ＭｏＯ３最高分散量为每克ＺＳＭ－５上０．０８克ＭｏＯ３．而本文采用水热分散法可使ＭｏＯ３在ＺＳＭ－５分子筛中的分散量大大提高．当分散量高达每克ＺＳＭ－５上０．３克ＭｏＯ３时，通过ＸＲＤ，ＩＲ，ＤＴＡ谱测试和吸附测定，都证实了ＭｏＯ３在ＺＳＭ－５中仍然是以非晶相分散态存在．此时，样品有吸附自重６％的水的吸附能力和相应的孔道．

STUDIES ON DISPERSION OF MoO_3 ON ZSM 5 ZEOLITE BY HYDROTHERMAL METHOD

The highest dispersion amount by heating spontaneous diffusion method is only 0 08 g MoO 3 on 1 g ZSM 5. However, dispersion amount of MoO 3 on the zeolite ZSM 5 can be raised significantly by hydrothermal method. Results of XRD, IR, DTA and adsorption showed that MoO 3 is still in noncrystal phase (dispersion state) when dispersion amount is increased to 0 3 g MoO 3 on 1 g ZSM 5. It is very interesting to note that the sample with 0 3 g MoO 3 on 1 g ZSM 5 can adsorb 6%H 2O, indicating that the sample has typical microporous channels ( d >0 3 nm).