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发明公开
CN107746065A 一种制备高性能SAPO-34分子筛膜的方法 无效 - 驳回

一种制备高性能SAPO-34分子筛膜的方法
摘要：
本发明公开了一种高性能SAPO-34分子筛膜的制备方法，步骤包括合成SAPO-34分子筛晶种；将多孔载体外表面改性；将SAPO-34分子筛晶种浸涂到改性后的多孔载体外表面上；将制备的镀有SAPO-34分子筛晶种的多孔载体置于分子筛合成母液中，进行水热晶化；高温焙烧去除模板剂，得到SAPO-34分子筛膜。本发明利用硅烷偶联剂改性多孔载体制备SAPO-34分子筛膜，增加了载体表面与沸石晶体之间的附着力，不仅极大的提高了SAPO-34分子筛膜的合成重复性，而且缩短了膜的合成时间。合成出的膜对H2/CO2分离选择性较高，同时也可应用于CO2/CH4和CO2/N2等气体分离中。
摘要（英）：

The invention discloses a method for preparing a high-performance SAPO-34 molecular sieve membrane. The method comprises the following steps: synthesizing SAPO-34 molecular sieve seed crystals; modifying the outer surface of a porous carrier; coating the outer surface of the modified porous carrier with the SAPO-34 molecular sieve seed crystals in a dipping way; putting the prepared porous carrier, plated with the SAPO-34 molecular sieve seed crystals, into molecular sieve synthesis mother liquor, and carrying out hydrothermal crystallization; carrying out high-temperature roasting to remove atemplate agent so as to obtain the SAPO-34 molecular sieve membrane. According to the method, the SAPO-34 molecular sieve membrane is prepared by using a silane coupling agent to modify the porous carrier, so that the adhesion between the surface of the carrier and zeolite crystals is increased; therefore, not only is the synthetic repeatability of the SAPO-34 molecular sieve membrane greatly improved, but the synthesis time of the SAPO-34 molecular sieve membrane is also shortened. The synthesized membrane has higher separation selectivity for H2/CO2, and also can be applied to gas separation of CO2/CH4, CO2/N2, and the like.

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