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Syntheses, habit control and catalytic properties of zeolites modified by isomorphous substitution of framework atoms

骨架原子同晶取代改性沸石的合成、习性控制及催化性能

基本信息

批准号：
02640628
负责人：
UEDA Satoru
金额：
$ 1.28万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

项目摘要

(1) The synthesis conditions of high-silica Ga, Al-ZSM-11 solid solutions, the relationship between crystal growth environment and morphology of the products, and the catalytic properties in the conversion of methanol to hydrocarbons on their H-forms have been clarified.(2) The catalytic properties in the conversion of methanol to hydrocarbons on the H-forms of synthesized Fe, Al-ferrierite solid solutions have been elucidated.(3) The synthesis conditions of Ga, Al-analcime solid solutions, the correlation between Ga and Al contents in their crystallization, and relationship between crystal growth and Ga (or Al) contents of the products have been defined.(4) The synthesis conditions of high-silica Ga, Al-ZSM-5 solid solutions, the relationship between Ga and Al contents in their crystallization, and the correlation between growth environment and morphology of the products have been clarified.(5) Stability on the bond energy of 3-rings consisting of BeO_4 and SiO_4 tetrahedra in synthesized lovdarite has been proved by the measurement of IR spectra.(6) The single crystal of synthetic analcime was grown up to 900mum in size. This dimension is larger than those of zeolites reported in literatures, and accordingly the growth mechanism for analcime should be studied in near future because there is the possibility to grow as larger single crystals than 900mum.

(1)明确了高硅Ga、Al-ZSM-11固溶体的合成条件、晶体生长环境与产物形态的关系以及h型甲醇转化为烃类的催化性能。(2)阐明了合成的Fe、al -铁素体固溶体h型催化甲醇制烃的性质。(3)明确了Ga、Al-analcime固溶体的合成条件、结晶过程中Ga与Al含量的关系、晶体生长与产物Ga（或Al）含量的关系。(4)明确了高硅Ga、Al- zsm -5固溶体的合成条件、结晶过程中Ga与Al含量的关系、生长环境与产物形貌的关系。(5)通过红外光谱测量，证明了合成的菱铁矿中由BeO_4和SiO_4四面体组成的3环键能的稳定性。(6)合成的铝胺单晶生长到900微米大小。该尺寸比文献报道的沸石尺寸要大，因此，由于有可能生长成比900mum更大的单晶，因此在不久的将来，应研究铝胺的生长机理。