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发明公开
CN109794284A 一种表面富集金属的分子筛材料、其制备方法及应用 有权

一种表面富集金属的分子筛材料、其制备方法及应用
摘要：
本申请公开了一种表面富集金属的分子筛材料、其制备方法及在含氧化合物制备烯烃中的应用。所述表面富集金属的分子筛材料包含金属元素M；所述金属元素M在分子筛材料表面的摩尔分数nMsur高于所述金属元素在分子筛材料体相的摩尔分数nMtotal。该表面富集金属的分子筛材料可改变分子在分子筛中的扩散性能，改变含氧化合物原料制烯烃反应中产物分布，达到产物选择性调控的目的。
摘要（英）：

The invention discloses a molecular sieve material with a surface enriched with metal and a preparation method and application of the molecular sieve material in preparing olefins by using oxygenatedchemicals. The molecular sieve material with the surface enriched with the metal comprises a metal element M; the molar fraction nMsur of the metal element M on the surface of the molecular sieve material is higher than the molar fraction nMtotal of the metal element in a bulk phase of the molecular sieve material. The molecular sieve material with the surface enriched with the metal has the advantages that the diffusion property of molecules in a molecular sieve can be changed, the product distribution in a reaction for preparing the olefins by using oxygenated chemical raw materials is changed, and the purpose of selectively regulating products is achieved.

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