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发明公开
CN103508860A 一种由甲醇和甲醛制备聚甲氧基二甲醚的方法 有权

一种由甲醇和甲醛制备聚甲氧基二甲醚的方法
摘要：
本发明涉及一种由甲醇和甲醛反应制备聚甲氧基二甲醚(其分子式：CH3O(CH2O)xCH3，3≤X≤4)的方法，其主要步骤是：在有催化剂存在条件下，由甲醇与甲醛进行反应，制得目标物，其特征在于，所述的催化剂为负载型催化剂，所述负载型催化剂的活性组分包含：金属钼和/或其氧化物、金属铁和/或其氧化物、或/和金属铌和/或其氧化物，所述负载型催化剂的载体是γ-Al2O3；以所述负载型催化剂的总重量为100％计，金属钼和/或其氧化物占0.1wt％～35wt％，金属铁和/或其氧化物占0wt％～10wt％，金属铌和/或其氧化物占0wt％～15wt％，余量为载体。本发明将目标产物的选择性可提高10％～30％。
摘要（英）：

The invention relates to a method for preparing polyoxymethylene dimethylethers (with a molecular formula of CH3O(CH2O)Xch3, 3<=x<=4) form methanol and formaldehyde, comprising the following steps that: in exist of a catalyst, methanol is reacted with formaldehyde formaldehyde to obtain the polyoxymethylene dimethylethers. The method is characterized in that: the catalyst is a supported catalyst, wherein an active component of the supported catalyst comprises: metallic molybdenum and/or its oxide, metallic iron and/or its oxide, and/or metallic niobium and/or its oxide, and a carrier of the supported catalyst is gamma-Al2O3; and, the supported catalyst, with a total weight being 100%, contains 0.1-35% by weight of metallic molybdenum and/or its oxide, 0-10% by weight of metallic iron and/or its oxide, 0-15% by weight of metallic niobium and/or its oxide, and the balance being the carrier. By the method, the selectivity of polyoxymethylene dimethylethers can be raised 10-30%.

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