| 摘要 |
Preparation of DDR type zeolite film comprises synthesizing using water and heating raw material containing: (a) 1-adamantane amine; (b) silica; (c) water; and (d) ethylene diamine with DDR type zeolite powder as seed crystals. The molar ratio of (a) to (b) is 0.03-0.4, the molar ratio of (c) to (b) is 20-500, and the molar ratio of (e) to (a) is 5-32. Independent claims are also included for: (1) a gas separation method using the film to separate gas mixtures containing two or more of CO 2, H 2, O 2, N 2, methane, n-C 4H 10, i-C 4H 10, SF 6, C 2H 6, C 2H 4, C 3H 8, C 3H 6, CO, and NO; (2) an apparatus used for the gas separation; (3) a composite comprising a porous substrate and a DDR zeolite layer; and (4) preparation of the composite. |
