Selective toluene disproportionation process (STDP) with ex situ
selectivated zeolite catalyst
    8.
    发明授权
    Selective toluene disproportionation process (STDP) with ex situ selectivated zeolite catalyst 失效
    选择性甲苯歧化过程(STDP)与非原位选择性沸石催化剂

    公开(公告)号:US5367099A

    公开(公告)日:1994-11-22

    申请号:US69254

    申请日:1993-05-28

    摘要: A process for shape selective hydrocarbon conversion that involves contacting a hydrocarbon feedsteam, including toluene, under conversion conditions with a catalytic molecular sieve which has been modified by being ex situ selectivated with a silicon compound. The ex situ selectivation involves exposing the molecular sieve to at least two silicon impregnation sequences, each sequence comprising an impregnation with a silicon compound followed by calcination. The modified catalyst used in the process may also be steamed. Optionally, the modified catalyst may be trim-selectivated.

    摘要翻译: 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包含甲苯的烃进料流与通过用硅化合物进行非原位选择性修饰的催化分子筛接触。 异位选择包括将分子筛暴露于至少两个硅浸渍序列,每个序列包含用硅化合物浸渍,随后煅烧。 在该方法中使用的改性催化剂也可以蒸。 任选地,修饰的催化剂可以是修剪选择的。

    Enhanced shape selective applications and methods to increase the
activity thereof
    10.
    发明授权
    Enhanced shape selective applications and methods to increase the activity thereof 失效
    增强的形状选择性应用和增加其活性的方法

    公开(公告)号:US5633417A

    公开(公告)日:1997-05-27

    申请号:US453042

    申请日:1995-05-30

    摘要: An ex situ selectivated catalytic molecular sieve for enhanced shape selective hydrocarbon conversions in which a catalytic molecular sieve is modified by being exposed to at least two selectivation sequences, each sequence including an impregnation of the molecular sieve with a selectivating agent and a subsequent calcination of the impregnated molecular sieve. The ex situ selectivation method is also described, including the use of low volatility organic carriers for the selectivating agent. 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 process for shape selective hydrocarbon conversion comprising contacting a hydrocarbon feedstream under conversion conditions with the modified catalytic molecular sieve.

    摘要翻译: 用于增强形状选择性烃转化的异位选择性催化分子筛,其中通过暴露于至少两个选择性序列来修饰催化分子筛,每个序列包括用选择性试剂浸渍分子筛,随后煅烧 浸渍分子筛。 还描述了非原位选择方法,包括使用低挥发性有机载体用于选择性试剂。 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。 还描述了形状选择性烃转化的方法,包括在转化条件下使烃进料流与改性的催化分子筛接触。