Method for the production of butadiene from n-butane
    31.
    发明申请
    Method for the production of butadiene from n-butane 失效
    从正丁烷生产丁二烯的方法

    公开(公告)号:US20050171311A1

    公开(公告)日:2005-08-04

    申请号:US10516920

    申请日:2003-07-10

    摘要: The invention relates to a process for preparing butadiene from n-butane comprising the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into a first dehydrogenation zone and nonoxidatively catalytically dehydrogenating n-butane to 1-butene, 2-butene and optionally butadiene to obtain a first product gas stream comprising n-butane, 1-butene and 2-butene, with or without butadiene and secondary components, (C) feeding the first product gas stream comprising n-butane, 1-butene and 2-butene, with or without butadiene and secondary components, into a second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to butadiene to give a second product gas stream comprising butadiene, n-butane and steam, with or without secondary components, (D) recovering butadiene from the second product gas stream.

    摘要翻译: 本发明涉及一种从正丁烷制备丁二烯的方法,包括步骤(A)提供含正丁烷的原料气流,(B)将含正丁烷的进料气流进料到第一脱氢区和非氧化反应 将正丁烷催化脱氢为1-丁烯,2-丁烯和任选的丁二烯以获得含有或不具有丁二烯和二级组分的正丁烷,1-丁烯和2-丁烯的第一产物气流,(C) 将包含或不具有丁二烯和次要组分的正丁烷,1-丁烯和2-丁烯的产物气流转化为第二脱氢区并将1-丁烯和2-丁烯氧化脱氢成丁二烯,得到包含丁二烯的第二产物气流 正丁烷和蒸汽,具有或没有二级组分,(D)从第二产物气流回收丁二烯。

    Preparation of carbonyl compounds
    34.
    发明授权
    Preparation of carbonyl compounds 失效
    羰基化合物的制备

    公开(公告)号:US06255534B1

    公开(公告)日:2001-07-03

    申请号:US09240851

    申请日:1999-02-01

    IPC分类号: C07C4529

    摘要: Carbonyl compounds of the formula where R1 is a hydrogen atom or an alkyl radical having from 1 to 3 carbon atoms, R2 is a hydrogen atom, an unsubstituted or C1-C3-alkyl-monosubstituted to -trisubstituted C2-C4-alkenyl radical or a radical of the formula where R3 is a hydrogen atom or together with R4 is an oxygen atom, R4 is the radical OR6 or together with R3 is an oxygen atom, R5 is a hydrogen atom, an alkyl radical having from 1 to 8 carbon atoms, an unsubstituted or C1-C3-alkyl-monosubstituted to -trisubstituted C2-C4-alkenyl radical or a cyclohexyl or cyclopentyl radical and R6 is an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula —CH2—CHO or —CH2—CH2—O—CH2—CHO, are prepared by gas-phase oxidation of methanol or alcohols of the formula where R1 and R5 are as defined above, by means of an oxygen-containing gas in the presence of copper- and/or silver-containing catalysts, the catalyst system used comprising at least one phosphorus-containing copper- and/or silver-containing catalyst.

    摘要翻译: 式R 1的羰基化合物是氢原子或具有1至3个碳原子的烷基,R 2是氢原子,未取代的或C 1 -C 3烷基单取代的至三取代的C 2 -C 4 - 烯基或基团 其中R 3是氢原子或与R 4一起是氧原子,R 4是基团OR 6或与R 3一起是氧原子,R 5是氢原子,具有1至8个碳原子的烷基,未取代的 或C 1 -C 3烷基单取代至三取代的C 2 -C 4 - 烯基或环己基或环戊基,R 6是具有1至4个碳原子的烷基,环己基或环戊基或式-CH 2 -CHO或-CH2-CH2-O-CH2-CHO,通过在含铜的气体存在下,通过含氧气体,通过气相氧化甲醇或式(I)的化合物,其中R 1和R 5如上定义, 和/或含银催化剂,所用的催化剂体系包含至少一个p 含胡磷铜和/或含银催化剂。

    Catalyst beds for non-steady state processes
    39.
    发明授权
    Catalyst beds for non-steady state processes 失效
    用于非稳态过程的催化剂床

    公开(公告)号:US06211113B1

    公开(公告)日:2001-04-03

    申请号:US08711553

    申请日:1996-09-10

    IPC分类号: B01J2724

    摘要: A layered catalyst support or carrier provides a core member for carrying out non-steady state heterogeneously catalyzed processes where reaction gases and their products come in contact with a conventional catalyst applied to the carrier. The support as a carrier is made up of a large number of individually shaped particulate bodies or monolithic packings to be loaded into a reactor and maintained as a fluidized bed or a fixed bed during the non-steady state reaction and the recovery of the products. The support or carrier may consist of glass, quartz, oxides, nitrides, aluminosilicates, magnesium silicates, metals and carbon or their mixtures. Each shaped particle or monolithic packing of this core support is then completely enclosed by depositing thereon a thin protective layer of a nitride, oxide, carbide or chloride of a metal, a non-metal or a mixture thereof, which exhibits a dense, pore-free microstructure and a nonpolar surface having a very low density of acid centers. This outer layer is applied to the core support by a plasma-assisted gas phase deposition. The catalytically active layer is then applied to this protective layer.

    摘要翻译: 层状催化剂载体或载体提供用于进行非稳态异质催化方法的芯构件,其中反应气体及其产物与施加到载体上的常规催化剂接触。 作为载体的载体由大量单独形状的颗粒体或整体填料组成,以在非稳态反应和产物的回收期间装载到反应器中并保持为流化床或固定床。 载体或载体可以由玻璃,石英,氧化物,氮化物,铝硅酸盐,硅酸镁,金属和碳或它们的混合物组成。 然后,通过在其上沉积金属,非金属或它们的混合物的氮化物,氧化物,碳化物或氯化物的薄保护层,将这种芯支撑体的每个成形颗粒或整体式填料完全封闭, 自由微结构和具有非常低的酸中心密度的非极性表面。 通过等离子体辅助气相沉积将该外层施加到芯支撑体上。 然后将催化活性层施加到该保护层。