Method of preparation of ex situ selectivated zeolite catalysts for
enhanced shape selective applications and methods to increase the
activity thereof
    1.
    发明授权
    Method of preparation of ex situ selectivated zeolite catalysts for enhanced shape selective applications and methods to increase the activity thereof 失效
    用于增强形状选择性应用的非原位选择性沸石催化剂的制备方法和增加其活性的方法

    公开(公告)号:US5726114A

    公开(公告)日:1998-03-10

    申请号:US516435

    申请日:1995-08-17

    摘要: A method of preparing a modified catalytic molecular sieve for enhanced shape selective hydrocarbon conversions in which a catalytic molecular sieve is modified by being exposed to at least one ex situ selectivation sequence, each sequence including an impregnation of the molecular sieve with a selectivating agent in an aqueous emulsion and a subsequent calcination of the impregnated molecular sieve. The selectivating agent compositions for the ex situ selectivation method are also described, including the selectivating agents, the surfactants, and the aqueous components. Also, a method for moderate steaming of the ex situ selectivated molecular sieve. Also a method for in situ trim-selectivating the ex situ selectivated catalytic molecular sieve. Also described is the modified catalytic molecular sieve modified by this method. Also described is a process for shape selective hydrocarbon conversion comprising contacting a hydrocarbon feedstream under conversion conditions with the modified catalytic molecular sieve.

    摘要翻译: 一种制备用于增强形状选择性烃转化的改性催化分子筛的方法,其中催化分子筛通过暴露于至少一种非原位选择活性序列来修饰,每个序列包括用选择性试剂浸渍分子筛 水性乳液,随后煅烧浸渍的分子筛。 还描述了用于异位选择方法的选择性试剂组合物,包括选择性试剂,表面活性剂和水性组分。 另外,用于非原位选择性分子筛的中等蒸度的方法。 还有一种用于原位选择活化的催化分子筛的原位选择方法。 还描述了通过该方法改性的改性催化分子筛。 还描述了一种用于形状选择性烃转化的方法,其包括在转化条件下使烃进料流与改性的催化分子筛接触。