Process for selectively converting ethene to isobutylene over
selectivated ZSM-35
    44.
    发明授权
    Process for selectively converting ethene to isobutylene over selectivated ZSM-35 失效
    在选择性的ZSM-35上选择性地将乙烯转化为异丁烯的方法

    公开(公告)号:US5475181A

    公开(公告)日:1995-12-12

    申请号:US228778

    申请日:1994-04-18

    IPC分类号: B01J29/65 C07C2/12 C07C2/04

    摘要: The present invention relates to a process for the oligomerization of ethene to a product rich in isobutylene comprising contacting a feedstock comprising ethene under oligomerization conditions with a catalyst composition comprising a porous crystalline silicate having the structure of ZSM-35 zeolite whose surface has been at least partially deactivated for acid catalyzed reactions by a) coking or b) chemisorption of a surface-deactivating agent, e.g., collidine, which possesses an average cross section diameter greater than that of the zeolite pores.

    摘要翻译: 本发明涉及将乙烯低聚成富含异丁烯的产物的方法,包括在低聚条件下使包含乙烯的原料与包含具有ZSM-35沸石结构的多孔结晶硅酸盐的催化剂组合物接触,所述结构硅酸盐的表面至少为 通过a)焦化或b)具有平均截面直径大于沸石孔的平均截面直径的表面去活化剂(例如可力丁)的化学吸附,部分失活用于酸催化反应。

    Coke-selectivated porous acidic crystalline catalyst, its preparation,
and use in olefin oligomerization
    46.
    发明授权
    Coke-selectivated porous acidic crystalline catalyst, its preparation, and use in olefin oligomerization 失效
    焦炭选择性多孔酸性结晶催化剂,其制备和用于烯烃低聚

    公开(公告)号:US5234875A

    公开(公告)日:1993-08-10

    申请号:US805137

    申请日:1991-12-11

    IPC分类号: B01J29/70 B01J37/10

    CPC分类号: B01J29/70 B01J37/10

    摘要: A surface-inactivated catalyst composition comprising acidic porous crystalline material, e.g., ZSM-23, having active internal Bronsted acid sites and containing coke-inactivated external acid sites is prepared by contacting the catalyst under high pressure coking conditions, e.g. 800 psig. The catalyst may be used for organic compound conversion, e.g., oligomerization of lower olefins to produce distillate boiling range materials having reduced methyl branching and increased cetane number.

    摘要翻译: 通过使催化剂在高压焦化条件下接触来制备表面活化的催化剂组合物,该催化剂组合物包含酸性多孔结晶材料,例如具有活性内部布朗斯台德酸性位点并含有焦炭失活的外部酸性位点的ZSM-23。 800 psig 该催化剂可以用于有机化合物转化,例如低级烯烃的低聚,以产生具有降低的甲基支链和增加的十六烷值的馏出物沸点范围的材料。

    Conversion of methane
    49.
    发明授权
    Conversion of methane 失效
    甲烷转化

    公开(公告)号:US5012029A

    公开(公告)日:1991-04-30

    申请号:US422367

    申请日:1989-10-16

    IPC分类号: C07C2/84

    摘要: A mixture of organic compounds comprising a major amount of liquid hydrocarbons, mostly aromatic, is formed by the direct partial oxidation of methane in the presence of a ZSM-5 catalyst. The reaction conditions are substantially the same as those required for the direct homogeneous partial oxidation to methanol. However, liquid hydrocarbon formation depends on the presence of a small amount of an impurity such as propane or propylene in the feed; in the absence of such, only methanol is formed. With such modifier present, controls of reaction parameters, e.g., temperature, permits synthesis of both methanol and liquid hydrocarbons in desired proportions. Properly processed natural gas can serve to provide methane and at least part of the reaction modifier.

    摘要翻译: 通过在ZSM-5催化剂的存在下甲烷的直接部分氧化形成包含主要量的液体烃(主要是芳族)的有机化合物的混合物。 反应条件与直接均相部分氧化成甲醇所需的条件基本相同。 然而,液态烃的形成取决于进料中少量杂质如丙烷或丙烯的存在; 在不存在的情况下,仅形成甲醇。 使用这种改性剂时,反应参数例如温度的控制允许以所需比例合成甲醇和液态烃。 适当加工的天然气可用于提供甲烷和至少部分反应调节剂。