Naphthalene alkylation process
    11.
    发明授权
    Naphthalene alkylation process 失效
    萘烷基化方法

    公开(公告)号:US5034563A

    公开(公告)日:1991-07-23

    申请号:US505392

    申请日:1990-04-06

    IPC分类号: C07C2/66

    摘要: Long chain alkyl substituted naphthalenes are produced by the alkylation of naphthalene with an olefin or other alkylating agent possessing at least 6 carbon atoms, usually 12 to 20 carbon atoms, in the presence of an alkylation catalyst comprising a zeolite which contains cations having a radius of at least 2.5 .ANG.. Cations of this size may be provided by hydrated cations such as hydrated ammonium, sodium or potassium cations or by organoammonium cations such as tetraalkylammonium cations. The zeolite is usually a large pore size ze USY. The presence of the bulky cations in the zeolite increases the selectivity of the catalyst for the production of long chain mono-alkyl substituted naphthalenes in preference to more highly substituted products.

    摘要翻译: 长链烷基取代的萘是通过在含有至少6个碳原子,通常12至20个碳原子的烯烃或其它烷基化剂的烷基化催化剂的存在下,在包含含有阳离子的沸石的烷基化催化剂的存在下, 至少2.5 ANGSTROM。 这种大小的阳离子可由水合阳离子如水合铵,钠或钾阳离子或有机铵阳离子如四烷基铵阳离子提供。 沸石通常是大孔尺寸的USY。 沸石中大体积阳离子的存在增加了催化剂对于生产长链单烷基取代的萘的选择性,优于更高取代的产物。

    Transalkylation of polyaromatics
    12.
    发明授权
    Transalkylation of polyaromatics 失效
    多芳族化合物的烷基转移

    公开(公告)号:US4885426A

    公开(公告)日:1989-12-05

    申请号:US327378

    申请日:1989-03-23

    IPC分类号: C07C6/12

    CPC分类号: C07C6/126 C07C2529/40

    摘要: A process is provided for transalkylation of polyalkylaromatics over a catalyst comprising a molecular sieve having a high lattice aluminum content whereby its silica/alumina mole ratio is less than 40 and an alpha value of at least about 140.

    摘要翻译: 提供了一种方法,用于在包含具有高格子铝含量的分子筛的催化剂上进行多烷基芳族化合物的烷基转移,由此其二氧化硅/氧化铝摩尔比小于40,α值至少为约140。

    Fischer-Tropsch catalyst production
    16.
    发明授权
    Fischer-Tropsch catalyst production 有权
    费 - 托催化剂生产

    公开(公告)号:US07361619B2

    公开(公告)日:2008-04-22

    申请号:US10819379

    申请日:2004-04-06

    摘要: Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.

    摘要翻译: 用于氢化反应的分散活性金属催化剂通过用能够氧化金属颗粒并且包含至少一种氢化催化剂金属的化合物的溶液处理基本上催化惰性的金属颗粒而产生,从而形成氢氧化物和氧化物中的至少一种的层 上。 通过在高温下用含氢气体处理来活化金属颗粒以形成分散活性金属催化剂的多孔层。 优选地,处理的金属颗粒在活化之前被干燥,并且还优选在活化之前在含氧化剂的气氛中煅烧。 处理溶液可以有利地含有用于加入的催化剂金属的至少一种助催化剂金属的化合物。 该层的孔隙率提高了催化剂活性以及在费 - 托工艺中提高的甲烷选择性。