Method for producing propene oxide
    31.
    发明授权
    Method for producing propene oxide 失效
    丙烯氧化物的制备方法

    公开(公告)号:US06303800B1

    公开(公告)日:2001-10-16

    申请号:US09555978

    申请日:2000-07-14

    IPC分类号: C07D30110

    CPC分类号: C07D301/08 Y02P20/52

    摘要: Process for preparing propene oxide, in which a mixture of propene and oxygen or an oxygen-containing gas is reacted at a temperature in the range from 150 to 500° C., in the presence or absence of a catalyst, in a reactor, wherein all or part of the interior of the reactor is lined with inert materials. The inert material used is at least one of the materials of the following group: one or more noble metals of transition group VIII of the Periodic Table, in particular gold, titanium and tantalum, glass, enamel, quartz, ceramic and Teflon. The selectivity to propene oxide is >60%.

    摘要翻译: 制备丙烯氧化物的方法,其中丙烯和氧气或含氧气体的混合物在反应器中在催化剂存在或不存在的情况下,在150-500℃的温度下反应,其中 反应器内部的全部或部分内衬惰性材料。 使用的惰性材料是以下组中的至少一种材料:一种或多种元素周期表第八族过渡金属,特别是金,钛和钽,玻璃,搪瓷,石英,陶瓷和特氟隆。 氧化丙烯的选择性> 60%。

    Process and catalyst for preparing acetic acid by catalytic oxidation of ethane
    32.
    发明授权
    Process and catalyst for preparing acetic acid by catalytic oxidation of ethane 有权
    通过乙烷的催化氧化制备乙酸的方法和催化剂

    公开(公告)号:US06274765B1

    公开(公告)日:2001-08-14

    申请号:US09403516

    申请日:1999-11-10

    IPC分类号: C07C51215

    摘要: A process is disclosed for selectively preparing acetic acid from a gaseous feed of ethane, ethylene or mixtures thereof, as well as oxygen, at an increased temperature, on a catalyst which contains the elements W, X, Y and Z in the gram-atom ratio a:b:c:d, associated with oxygen. In the formula WaXbYcZd (I), X stands for one or several elements selected from the group Pd, Pt, Ag and/or Au; Y stands for one or several elements selected from the group V, Nb, Cr, Mn, Fe, Sn, Sb, Cu, Zn, U, Ni and/or Bi; Z stands for one or several elements selected from the group Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Sc, Y, La, Ti, Zr, Hf, Ru, Os, Co, Rh, Ir, B, Al, Ga, In, Tl, Si, Ge, Pb, P, As and/or Te; a equals 1, b is a number higher than 0, c is a number higher than 0, and d is a number from 0 to 2. Also disclosed is said catalyst.

    摘要翻译: 公开了一种方法,用于从乙烯,乙烯或其混合物的气态进料中选择性地制备乙酸,以及在升高的温度下,在含有元素W,X,Y和Z的元素的催化剂上的氧气 比例a:b:c:d,与氧相关。 式中,X表示选自Pd,Pt,Ag和/或Au中的一种或几种元素; Y代表选自V,Nb,Cr,Mn,Fe,Sn,Sb,Cu,Zn,U,Ni和/或Bi中的一种或几种元素; Z代表选自Li,Na,K,Rb,Cs,Be,Mg,Ca,Sr,Ba,Sc,Y,La,Ti,Zr,Hf,Ru,Os,Co,Rh中的一种或几种元素 ,Ir,B,Al,Ga,In,Tl,Si,Ge,Pb,P,As和/或Te; a等于1,b是高于0的数,c是高于0的数,d是0至2的数。还公开了所述催化剂。

    Process for the selective preparation of acetic acid using a molybdenum and palladium based catalytic oxide
    33.
    发明授权
    Process for the selective preparation of acetic acid using a molybdenum and palladium based catalytic oxide 有权
    使用钼和钯基催化氧化物选择性制备乙酸的方法

    公开(公告)号:US06194610B1

    公开(公告)日:2001-02-27

    申请号:US09230553

    申请日:1999-01-28

    IPC分类号: C07C5116

    摘要: The present invention relates to a process for the selective preparation of acetic acid from a gaseous feed comprising ethane, ethylene or mixtures thereof plus oxygen at elevated temperature, which comprises bringing the gaseous feed into contact with a catalyst comprising the elements Mo, Pd, X and Y in gram atom ratios a:b:c:d in combination with oxygen MoaPdbXcYd  (I) where the symbols X and Y have the following meanings: X is one or more elements selected from the group consisting of: Cr, Mn, Nb, Ta, Ti, V, Te and/or W, in particular Nb, V and W; Y is one or more elements selected from the group consisting of: B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Cu, Rh, Ir, Au, Ag, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, TI and U, in particular Ca, Sb, Te and Li. The present invention further provides a catalyst for the selective preparation of acetic acid comprising the elements Mo, Pd, X and Y in the gram atom ratios a:b:c:d in combination with oxygen. The process can be illustrated by the following reaction scheme,

    摘要翻译: 本发明涉及一种从高温选择性制备乙酸,包括乙烷,乙烯或其混合物加氧的方法,其中包括使气态进料与包含元素Mo,Pd,X的催化剂接触 和Y以克原子比a:b:c:d与氧的组合,其中符号X和Y具有以下含义:X是选自以下的一种或多种元素:Cr,Mn,Nb,Ta,Ti, V,Te和/或W,特别是Nb,V和W; Y是选自B,Al,Ga,In,Pt,Zn,Cd,Bi,Ce,Co,Cu中的一种或多种元素 ,Rh,Ir,Au,Ag,Fe,Ru,Os,K,Rb,Cs,Mg,Ca,Sr,Ba,Zr,Hf,Ni,P,Pb,Sb,Si,Sn, 特别是Ca,Sb,Te和Li。 本发明还提供了一种用于选择性制备乙酸的催化剂,其包含以氧原子比a:b:c:d与氧组合的元素Mo,Pd,X和Y。 该方法可以通过以下反应方案来说明,

    Process for the selective preparation of acetic acid using a molybdenum,
palladium, and rhenium catalyst
    35.
    发明授权
    Process for the selective preparation of acetic acid using a molybdenum, palladium, and rhenium catalyst 有权
    使用钼,钯和铼催化剂选择性制备乙酸的方法

    公开(公告)号:US6034270A

    公开(公告)日:2000-03-07

    申请号:US180995

    申请日:1998-11-19

    摘要: A process for the selective preparation of acetic acid from a gaseous feed comprising ethane, ethylene or mixtures thereof plus oxygen at elevated temperature, which comprises bringing the gaseous feed into contact with a catalyst comprising the elements Mo, Pd, Re, X and Y in gram atom ratios a:b:c:d:e in combination with oxygenMo.sub.a Pd.sub.b Re.sub.c X.sub.d Y.sub.e (I)where the symbols X, Y have the following meanings:X=Cr, Mn, Nb, B, Ta, Ti, V and/or WY=Bi, Ce, Co, Cu, Te, Fe, Li, K, Na, Rb, Be, Mg, Ca, Sr, Ba, Ni, P, Pb, Sb, Si, Sn, Tl and/or U;the indices a, b, c, d and e are the gram atom ratios of the corresponding elements, wherea=1, b>0, c>0, d=0.05-2, e=0-3.

    摘要翻译: PCT No.PCT / EP97 / 02522 Sec。 371日期:1998年11月19日 102(e)1998年11月19日日期PCT提交1997年5月16日PCT公布。 第WO97 / 44299号公报 日期1997年11月27日一种在高温下从包含乙烷,乙烯或其混合物加气体的气态进料中选择性制备乙酸的方法,其包括使气态进料与包含元素Mo,Pd,Re ,X和Y以克原子比a:b:c:d:e与氧摩尔比RbRecXdYe(I)组合,其中符号X,Y具有以下含义:X = Cr,Mn,Nb,B,Ta,Ti,V 和/或WY = Bi,Ce,Co,Cu,Te,Fe,Li,K,Na,Rb,Be,Mg,Ca,Sr,Ba,Ni,P,Pb,Sb,Si,Sn, 或U; 指数a,b,c,d和e是相应元素的克原子比,其中a = 1,b> 0,c> 0,d = 0.05-2,e = 0-3。

    METHOD FOR DERACEMIZATION OF ENANTIOMER MIXTURES
    37.
    发明申请
    METHOD FOR DERACEMIZATION OF ENANTIOMER MIXTURES 审中-公开
    促进剂混合物的制备方法

    公开(公告)号:US20110070630A1

    公开(公告)日:2011-03-24

    申请号:US12866612

    申请日:2009-03-26

    IPC分类号: C12P41/00

    摘要: The invention relates to a process for enzymatic deracemization of enantiomer mixtures of secondary alcohols by a combination of oxidation and reduction reactions by means of stereoselective alcohol dehydrogenases and the cofactors thereof, wherein one enantiomer of an optically active secondary alcohol is in a formal sense selectively oxidized to the corresponding ketone, which is subsequently reduced selectively to the optical antipode, while the reduced form of the cofactor is provided for the reduction reaction by means of an additional enzyme, characterized in that two alcohol dehydrogenases with opposite stereoselectivity and different cofactor selectivity and the two corresponding, different cofactors are used for the oxidation and reduction reactions, and the oxidized and reduced cofactors are interconverted in a parallel enzymatic reaction with the additional enzyme, the direction of the deracemization toward one of the two enantiomers being controllable by the selection of the two alcohol dehydrogenases or using the selectivity difference of the additional enzyme for the two cofactors.

    摘要翻译: 本发明涉及通过立体选择性醇脱氢酶及其辅因子通过氧化和还原反应的组合将仲醇的对映异构体混合物酶促脱水化的方法,其中光学活性仲醇的一种对映异构体具有形式上的选择性氧化 相应的酮,其随后被选择性地还原成光学对映体,而还原形式的辅因子被提供用于通过另外的酶的还原反应,其特征在于具有相反立体选择性和不同辅因子选择性的两种醇脱氢酶和 两个相应的不同的辅因子被用于氧化和还原反应,并且氧化的和还原的辅因子与另外的酶在平行的酶反应中相互转化,通过选择th可以控制两个对映异构体之一的旋转方向 使用两种醇脱氢酶或使用另外的酶对两种辅因子的选择性差异。