Alkylation of aromatics
    22.
    发明授权
    Alkylation of aromatics 失效
    芳烃的烷基化

    公开(公告)号:US5157185A

    公开(公告)日:1992-10-20

    申请号:US402018

    申请日:1989-09-01

    IPC分类号: B01J29/40 C07C2/66

    摘要: Alkylation of aromatics, e.g. ethylbenzene preparation, with minimized o-xylene make by contacting with olefin alkylating agent in the presence of ZSM-5 crystals having a diffusion rate constant of at least about 100 sec.sup.-1 .times.10.sup.-6 and an alpha value of less than about 100 prepared from a non-organic forming mixture comprising a silica source of precipitated silica having a particle size of 1 to 500 microns.

    摘要翻译: 芳族化合物的烷基化,例如 乙基苯制备,通过在烯烃烷基化剂与ZSM-5晶体的存在下使烷基化反应最小化,所述ZSM-5晶体的扩散速率常数为至少约100秒-1×10-6,α值小于约100,由 非有机形成混合物,其包含粒度为1至500微米的沉淀二氧化硅的二氧化硅源。

    Process for preparing dialkylnaphthalene
    25.
    发明授权
    Process for preparing dialkylnaphthalene 失效
    制备二烷基萘的方法

    公开(公告)号:US5001295A

    公开(公告)日:1991-03-19

    申请号:US494203

    申请日:1990-03-15

    IPC分类号: B01J29/04 C07C2/12

    摘要: A catalytic process is provided for the preparation of dialkylnaphthalenes by alkylating a 2-alkylnaphthalene with an alkylating agent having an aliphatic group of from one to five carbon atoms, such as methanol. The catalyst comprises a synthetic zeolite characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36.+-.0.4, 11.03.+-.0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07 and 3.42.+-.0.06 Angstroms.

    摘要翻译: 提供了通过用具有1至5个碳原子的脂族基团如甲醇的烷基化烷基化2-烷基萘来制备二烷基萘的催化方法。 该催化剂包括合成沸石,其特征在于X射线衍射图包括在12.36 +/- 0.4,11.03 +/- 0.2,8.83±0.14,6.18±0.12,6.00±0.10, 4.06 +/- 0.07,3.91 +/- 0.07和3.42 +/- 0.06埃。

    Fischer-Tropsch catalyst production
    28.
    发明授权
    Fischer-Tropsch catalyst production 有权
    费 - 托催化剂生产

    公开(公告)号:US07419928B2

    公开(公告)日:2008-09-02

    申请号:US10819378

    申请日:2004-04-06

    摘要: A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.

    摘要翻译: 一种用于增强用于氢化反应的催化剂金属颗粒的活性的方法,包括在含氧化剂的气氛中煅烧颗粒以部分氧化,从而在其上形成多孔氧化物层,用能够氧化煅烧金属颗粒的溶液进行处理并包含 氢化催化剂金属的化合物,其中所述金属颗粒吸收了等于其计算孔体积的至少约10%的溶液体积,并通过在高温下用含氢气体处理使其活化,由此形成分散的活性金属 催化剂。 优选地,处理的颗粒在与含氢气体最终活化之前的第一次相同的条件下煅烧第二次。 优选在每次煅烧之后将金属颗粒定形,并将大于250微米的任何附聚物粉碎至所需尺寸。