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发明授权
CN108217686B 一种具有表面缺陷的SAPO-34分子筛的合成方法 有权

一种具有表面缺陷的SAPO-34分子筛的合成方法
摘要：
本发明提供了一种具有表面缺陷的SAPO‑34分子筛的合成方法。该方法包括：将硅源、铝源、磷源、模板剂和水按照摩尔比为SiO2：Al2O3：P2O5：R：H2O＝(0.5‑0.8)：1：(0.8‑1.2)：(1‑3)：(40‑80)比例混合后，在170‑190℃的低温，2‑15h的短时间条件下进行动态水热晶化，得到具有表面缺陷的立方体形貌SAPO‑34分子筛。按照本发明提供的技术方案得到的SAPO‑34分子筛产品具有表面缺陷以及优异的甲醇制烯烃催化性能。
摘要（英）：

The invention provides a synthesis method of a SAPO-34 molecular sieve with surface defects. The method comprises the following steps: after mixing a silicon source, an aluminum source, a phosphorus source, a template agent and water according to the mol ratio of SiO2 to Al2O3 to P2O5 to R to H2O of (0.5 to 0.8) to 1 to (0.8 to 1.2) to (1 to 3) to (40 to 80), carrying out dynamic hydrothermal crystallization at the low temperature of 170 to 190 DEG C and under a short-time condition of 2 to 15h, so as to obtain a cubic-shape SAPO-34 molecular sieve with the surface defects. According to the technical scheme provided by the invention, the obtained SAPO-34 molecular sieve has the surface defects and excellent methanol to olefin catalytic performance.

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