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107 条记录 (耗时 0.026 秒)

    Dispersed metal sulfide catalysts for hydroprocessing
    7.
    发明授权
    Dispersed metal sulfide catalysts for hydroprocessing 失效
    用于加氢处理的分散金属硫化物催化剂

    公开(公告)号：US5728644A

    公开(公告)日：1998-03-17

    申请号：US524228

    申请日：1995-09-05

    申请人： Teh Chung Ho ,  Stuart Leon Soled ,  Sabato Miseo ,  Gary Brice Mc Vicker ,  Michel Daage ,  Viktor Buchholz

    发明人： Teh Chung Ho ,  Stuart Leon Soled ,  Sabato Miseo ,  Gary Brice Mc Vicker ,  Michel Daage ,  Viktor Buchholz

    IPC分类号： B01J31/22 ,  B01J23/887 ,  B01J23/889 ,  B01J27/051 ,  B01J37/08 ,  B01J37/20 ,  C07B35/02 ,  C10G45/46 ,  C10G45/50 ,  B01J27/047 ,  B01J23/63 ,  B01J31/00

    CPC分类号： B01J37/086 ,  B01J23/887 ,  B01J23/8878 ,  B01J23/8892 ,  B01J27/051 ,  B01J37/20 ,  C10G45/46 ,  C10G45/50

    摘要： The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.ltoreq.3 when Cr is one of the promoter metals. (d) sulfiding said deposited or composited supports of step (c) with an excess amount of sulfur in the form of one or more sulfur bearing compounds and at a temperature of at least about 250.degree. C. to form catalysts. In a preferred embodiment, the process will further comprise decomposing the composited or deposited supports of step (c) in a nonoxidizing atmosphere at a temperature of at least about 250.degree. C. prior to said sulfiding step (d). In a second aspect of the invention there is provided an improved aromatics hydrogenation process.

    摘要翻译： 本发明涉及一种催化剂组合物，其包含通过以下方法制备的催化剂，所述催化剂包括：（a）将选自稀土氧化物前体，氧化钇前体及其混合物的氧化物前体浸渍到无机耐火氧化物载体上; （b）在约100至约120℃的温度下干燥所述载体，然后在约400至约600℃的温度下煅烧所述载体; 和（c）在步骤（b）的所述载体上合成或沉积由（ML）（MoyW1-yO4）a表示的催化剂前体盐，其中M包含Cr和/或一种或多种选自以下的二价助催化剂金属： Mn，Fe，Co，Ni，Cu，Zn及其混合物，其中y是0至1的任何值，并且其中L是一种或多种中性含氮配体，其中至少一种是螯合多齿配体; 当Cr不是助催化剂金属之一时，a = 1，当Cr是助催化剂金属之一时，a = 1。 （d）用一种或多种带硫化合物形式的过量硫磺和至少约250℃的温度硫化所述步骤（c）的沉积或复合载体以形成催化剂。 在优选的实施方案中，该方法还包括在所述硫化步骤（d）之前，在至少约250℃的温度下，在非氧化气氛中分解步骤（c）的复合或沉积的载体。 在本发明的第二方面，提供了一种改进的芳族化合物氢化方法。

    Method for preparing acrolein or methacrolein
    8.
    发明授权
    Method for preparing acrolein or methacrolein 失效
    制备丙烯酸或甲基纤维素的方法

    公开(公告)号：US5144090A

    公开(公告)日：1992-09-01

    申请号：US711032

    申请日：1991-06-06

    申请人： Tadatoshi Honda ,  Tokio Nagayama ,  Nobuhiko Horiuchi ,  Jun Kitagawa ,  Kazunori Kawahara ,  Masami Murakami

    发明人： Tadatoshi Honda ,  Tokio Nagayama ,  Nobuhiko Horiuchi ,  Jun Kitagawa ,  Kazunori Kawahara ,  Masami Murakami

    IPC分类号： B01J23/88 ,  C07C45/35 ,  C07C45/37 ,  C07C45/39

    CPC分类号： B01J23/887 ,  B01J23/002 ,  C07C45/35 ,  C07C45/37 ,  C07C45/39 ,  B01J2523/00

    摘要： A method for preparing acrolein or methacrolein comprises subjecting propylene, secondary propanol, isobutylene or tertiary butanol to gas phase catalytic oxidation with molecular oxygen in the presence of a catalyst represented by the following general formula (I):Mo.sub.a Bi.sub.b Fe.sub.c X.sub.d Y.sub.O Z.sub.f O.sub.g (I)wherein X represents at least one element selected from the group consisting of Ni and Co; Y represents at least one element selected from the group consisting of K, Rb, Cs and Tl; and Z represents at least one element selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ce, Ti, Zr, Nb, Cr, W, Mn, Cu, Ag, Zn, Cd, B, Al, Si, Ge, Sn, Pb, P, As, Sb, S, Se and Te; a, b, c, d, e, f and g each represents an atomic ratio of the corresponding element and when a is assumed to be 12, b=0.1.about.10, c=0.1.about.20, d=2.about.20, e=0.01.about.2, f=0.about.4 and g represents the number of oxygen atoms required for satisfying the valency requirement of the constituent elements, wherein the catalyst used is prepared by separately preparing solutions each of which contains the starting compound for the foregoing catalyst components, mixing these solutions within a short period of time, spray-drying the resulting mixture immediately after the mixing and then calcining the dried powder. A catalyst which further comprises 5 to 15% by weight of silica in addition to the foregoing composition is also used in the method. End products can be obtained in high conversion and selectivity through the use of the foregoing catalyst. Moreover, the catalyst is excellent in stability and has good reproducibility.

    Method for ammoxidation of paraffins and catalyst system therefor
    10.
    发明授权
    Method for ammoxidation of paraffins and catalyst system therefor 失效
    链烷烃的氧化方法及其催化剂体系

    公开(公告)号：US4888438A

    公开(公告)日：1989-12-19

    申请号：US264751

    申请日：1988-10-31

    申请人： Linda C. Glaeser ,  James F. Brazdil, Jr. ,  Mark A. Toft

    发明人： Linda C. Glaeser ,  James F. Brazdil, Jr. ,  Mark A. Toft

    IPC分类号： B01J23/85 ,  B01J23/88 ,  B01J37/04

    CPC分类号： B01J23/8872 ,  B01J23/85 ,  B01J23/887 ,  B01J23/8876 ,  B01J23/8877 ,  B01J23/8878 ,  B01J37/04 ,  C07C253/24 ,  Y02P20/52

    摘要： Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalyst compositions useful in the process are also disclosed.

    摘要翻译： 公开了使用（1）烷烃:NH 3的摩尔比在2至16和烷烃：O 2的摩尔比在1至10的范围内和（2）a（a）的情况下，使用NH 3和O 2使C3至C5无环烷烃氨氧化 颗粒催化剂组合物的混合物，第一种特别有效促进从石蜡形成不饱和腈和烯烃，第二催化剂组合物特别有效促进烯烃转化为不饱和腈。 还公开了可用于该方法的催化剂组合物。