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发明公开
CN101786014A 甲醇脱水制备二甲醚的催化剂及应用 无效 - 驳回

甲醇脱水制备二甲醚的催化剂及应用
摘要：
本发明公开了几种甲醇脱水制备二甲醚的催化剂。该催化剂由磷、氧、铝三种元素组成，结构类型为AFI、AEL或AFO。具体为AlPO-5、AlPO-11或AlPO-41沸石分子筛。本发明与同类催化剂相比不需要任何改性处理便可直接利用，具有制备方法简单，成本低廉，直接在固定床上连续反应就有较高的活性和较长的寿命。该催化剂上甲醇的单程转化率最高可以达到82.4％，二甲醚的选择性为99.9％。
摘要（英）：

The invention discloses a catalyst for preparing dimethyl ether by the dehydration of methanol, which consists of phosphorus elements, oxygen elements and aluminum elements, and has the structure type of AFI, AEL or AFO, particularly an AlPO-5, AlPO-11 or AlPO-41 zeolite molecular sieve. Compared with the same kind of catalyst, the catalyst of the invention can be used without any modification, and has the advantages of simple preparation method, low cost, high activity and long service life because of performing continuous reaction directly on a fixed bed. The maximal conversion per pass of the methanol on the catalyst can reach 82.4 percent, and the selectivity of the dimethyl ether is 99.9 percent.

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