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    • 8. 发明授权
    • Process for producing lower olefins
    • 低级烯烃的制备方法
    • US5475183A
    • 1995-12-12
    • US161061
    • 1993-12-03
    • Shintaro ArakiKatsuo TaniguchiToshiyuki Isaka
    • Shintaro ArakiKatsuo TaniguchiToshiyuki Isaka
    • B01J21/04C07C1/24C07C1/20
    • B01J21/04C07C1/24C07C2521/04C07C2521/12Y02P20/52
    • A process for the production of lower olefins by dehydrating lower alcohols having 2 to 4 carbon atoms which comprises using a .gamma.-alumina catalyst containing 0.3% by weight or less of impurities in total excluding SiO.sub.2, the impurities including 0.2% by weight or less of sulfur content calculated in terms of SO.sub.4 - and 0.05% by weight or less of sodium content calculated in terms of Na.sub.2 O, and/or a process for the production of lower olefins by dehydrating lower alcohols having 2 to 4 carbon atoms that comprises using a .gamma.-alumina catalyst which contains 0.5 to 5% by weight of SiO.sub.2.According to the process of the present invention, lower olefins can be produced from lower alcohols with high yield and high selectivity for a prolonged period of time without reducing the catalytic activity.
    • 通过使具有2至4个碳原子的低级醇脱水生产低级烯烃的方法,该方法包括使用含有0.3重量%以下除了SiO 2以外的杂质总量为0.3重量%以下的γ-氧化铝催化剂,包含0.2重量%以下的杂质 根据SO 4计算的硫含量和以Na 2 O计算的0.05重量%以下的钠含量,和/或通过使具有2至4个碳原子的低级醇脱水生产低级烯烃的方法,包括使用γ 含有0.5〜5重量%的SiO 2的氧化铝催化剂。 根据本发明的方法,低级烯烃可以从高产率和高选择性的低级醇生产较长时间,而不降低催化活性。
    • 10. 发明授权
    • Process for production of alkenyl substituted aromatic compound
    • 烯基取代芳族化合物的制备方法
    • US4978789A
    • 1990-12-18
    • US376929
    • 1989-07-10
    • Katsuo TaniguchiShigeki FujikawaYoshito Kurano
    • Katsuo TaniguchiShigeki FujikawaYoshito Kurano
    • C07C37/00C07C209/68
    • B01J23/862B01J23/825B01J23/835B01J23/8472B01J37/031C07C209/68C07C37/001B01J2523/00
    • A process for producing an alkenyl substituted aromatic compound having the general formula (I): ##STR1## wherein Ar represents an aromatic ring, R.sup.1 represents an alkenyl group having 2 to 8 carbon atoms, p is 1, 2, or 3 provided that R.sup.1 may be the same or different when p is 2 or 3, R.sup.2 represents an alkyl group having 1 to 8 carbon atoms, q is 0, 1, or 2 provided that R.sup.2 may be the same or different when q is 2, X represents --OH or --NR.sup.3 R.sup.4 wherein R.sup.3 and R.sup.4 independently represent hydrogen or an alkyl group having 1 to 2 carbon atoms, n is 1 or 2, provided that the sum of p and q is 1, 2, or 3 comprising the step of catalytically dehydrogenating an alkyl substituted aromatic compound having the general formula (III): ##STR2## wherein R.sup.5 represents an alkyl group having 2 to 8 carbon atoms and Ar, R.sup.2, X, p, q, and n are the same as defined above, n is 1 or 2, provided that R.sup.5 may be the same or different when p is 2 or 3 in the presence of a catalyst comprising (a) at least one iron oxide as a main component and (b) at least one oxide of metals belonging to the group III, IV or V of the periodic table of atoms.This catalyst can produce an alkenyl substituted aromatic compound having a hydroxyl or amino group in the aromatic ring thereof from the dehydrogenation of the corresponding alkyl substituted aromatic compound at a high yield and high selectivity and has a prolonged catalyst life.
    • 一种制备具有通式(I)的烯基取代的芳族化合物的方法:其中Ar表示芳族环,R 1表示具有2至8个碳原子的链烯基,p是1,2或3 条件是当p为2或3时,R 1可以相同或不同,R 2表示具有1至8个碳原子的烷基,q为0,1或2,条件是当q为2时,R 2可以相同或不同, X表示-OH或-NR 3 R 4,其中R 3和R 4独立地表示氢或具有1至2个碳原子的烷基,n为1或2,条件是p和q之和为1,2或3,包括步骤 催化脱氢具有通式(III)的烷基取代的芳族化合物:其中R 5表示具有2至8个碳原子的烷基,Ar,R 2,X,p,q和n与 n为1或2,条件是当催化剂存在时p为2或3时,R 5可以相同或不同,所述催化剂包含(a)至少一种i 氧化物作为主要成分,和(b)属于元素周期表第III,IV或V族的金属的至少一种氧化物。 该催化剂可以以高产率和高选择性从相应的烷基取代的芳族化合物的脱氢产生其芳环中具有羟基或氨基的烯基取代的芳族化合物,并具有延长的催化剂寿命。