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发明公开
CN102746102A 一种SAPO-11分子筛制备2,6-二甲基萘的方法 失效 - 权利终止

一种SAPO-11分子筛制备2,6-二甲基萘的方法
摘要：
一种SAPO-11分子筛制备2,6-二甲基萘的方法，它涉及一种制备2,6-二甲基萘的方法。本发明要解决现有的催化剂不能同时具有高活性和高2，6-DMN选择性,而且催化剂易失活的问题。本发明的方法为：将微波辐射加热合成的SAPO-11分子筛活化，将萘、烷基化试剂和溶剂按摩尔比1：2~4：6~12混合，在350~450℃，2~5MPa，质量空速为0.5~2h-1，载气流速为20~60mL/min的条件下烷基化反应得2,6-DMN。本发明合成的SAPO-11分子筛可以大幅缩短晶化时间，而且对萘的烷基化反应具有较高的催化活性，对2,6-DMN具有较高的选择性和很好的抗积碳能力。
摘要（英）：

The invention relates to a preparation method of the 2,6-DMN, in particular to a preparation method of the 2,6-DMN by using a SAPO-11 molecular sieve. The preparation method mainly solves the problems that catalysts cannot be provided with high activity and 2,6-DMN selectivity simultaneously, and the catalysts are easy to inactivate. The method includes activating the SAPO-11 molecular sieve synthesized by microwave radiation and heating, mixing naphthalene and alkylation reagents with a solvent according to a molar ratio of 1:(2-4):(6-12), and performing alkylation reaction to obtain the 2,6-DMN at a temperature of 350 DEG C to 450 DEG C, at a pressure of 2 MPa to 5 MPa, at a quality airspeed of 0.5-2h-1 and at a carrier gas flow rate of 20-60 mL/min. According to the preparation method, the synthesized SAPO-11 molecular sieve can shorten the crystallization time greatly, and has high catalytic activity to the alkylation reaction of the naphthalene and high selectivity and good anti-carbon deposition competence to the 2,6-DMN.

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