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    PROCEDIMIENTO PARA LA OXIDAXION PARCIAL DE ACROLEINA EN ACIDO ACRILICO, EN FASE GASEOSA, CATALIZADA DE MANERA HETEROGENEA.
    71.
    发明专利
    PROCEDIMIENTO PARA LA OXIDAXION PARCIAL DE ACROLEINA EN ACIDO ACRILICO, EN FASE GASEOSA, CATALIZADA DE MANERA HETEROGENEA. 未知

    公开(公告)号：ES2286626T3

    公开(公告)日：2007-12-01

    申请号：ES04722167

    申请日：2004-03-20

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  ARNOLD HEIKO ,  RUPPEL WILHELM ,  MULLER-ENGEL KLAUS JOACHIM

    IPC: C07C57/055 ,  C07C51/25

    Abstract: Procedimiento para la oxidación parcial de la acroleína para dar ácido acrílico, en fase gaseosa, catalizada de manera heterogénea, en el que se conduce una mezcla inicial gaseosa de reacción, que contiene acroleína, oxígeno molecular y, al menos, un gas inerte, que contiene el oxígeno molecular y la acroleína en una proporción molecular de O2 : C3H4O = 0, 5, en una etapa de reacción, a través de una carga a granel de catalizador en lecho fijo, cuya masa activa es al menos un óxido multimetálico, que contiene uno de los elementos Mo y V, con la condición de que - la carga a granel del catalizador en lecho fijo esté dispuesta en dos zonas de temperatura A, B, sucesivas en el espacio, - tanto la temperatura de la zona de temperatura A como también la temperatura de la zona de temperatura B sea una temperatura en el intervalo desde 230 hasta 320ºC, - la carga a granel del catalizador en lecho fijo esté constituida por, al menos, dos zonas de carga a granel del catalizador en lecho fijo, sucesivas en el espacio, siendo esencialmente constante la actividad específica, con respeto al volumen, dentro de una zona de la carga a granel del catalizador en lecho fijo y aumentando bruscamente en el sentido de flujo de la mezcla gaseosa de la reacción en la transición desde una zona de la carga a granel del catalizador en lecho fijo hasta otra zona de la carga a granel del catalizador en lecho fijo, - la zona de temperatura A se extienda hasta una conversión de la acroleína del 45 hasta el 85 % en moles.

    73.
    发明专利
    未知

    公开(公告)号：BRPI0408650A

    公开(公告)日：2006-03-07

    申请号：BRPI0408650

    申请日：2004-03-20

    Applicant: BASF AG

    Inventor： PETZOLDT JOCHEN ,  DIETERLE MARTIN ,  ARNOLD HEIKO ,  RUPPEL WILHELM ,  MUELLER-ENGEL KLAUS JOACHIM

    IPC: C07C17/35 ,  C07C51/25 ,  C07C45/35

    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, the starting reaction gas mixture is oxidized over a fixed catalyst bed which consists of at least two fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the transition from temperature zone A to temperature zone B does not spatially coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.

    74.
    发明专利
    未知

    公开(公告)号：DE50301823D1

    公开(公告)日：2006-01-05

    申请号：DE50301823

    申请日：2003-07-22

    Applicant: BASF AG

    Inventor： WEIGUNY JENS ,  RUPPEL WILHELM ,  DUDA MARK

    IPC: C07B61/00 ,  C07D307/60

    Abstract: A process for the production of maleic acid anhydride by heterogeneous catalytic gas phase oxidation of hydrocarbons having at least four carbon atoms with oxygen-containing gas in the presence of a volatile phosphorus compound at a vanadium, phosphorus and oxygen-containing catalyst in a tubular reactor unit having at least one reaction zone cooled by a heat exchange medium at 350-500 degreesC. A process for the production of maleic acid anhydride by heterogeneous catalytic gas phase oxidation of hydrocarbons having at least four carbon atoms with oxygen-containing gas in the presence of a volatile phosphorus compound at a vanadium, phosphorus and oxygen-containing catalyst in a tubular reactor unit having at least one reaction zone cooled by a heat exchange medium at 350-500 degreesC. With respect to the addition of reactants to the first reaction zone, the addition temperature and/or addition amount of the heat exchange medium are such that the average temperature of the heat exchange medium in the first reaction zone (TSB(1. zone)) is described by formula (1) and (2). TSB(1.zone) at most TD(1.zone)-TSafety(1.zone) (1) TSB,Amax(1.zone)-TA(1.zone) at most TSB(1.zone) at most TSB,Amax(1.zone)+TB(1.zone) (2) TD(1.zone) = through temperature in the first reaction zone corresponding to the average temperature of the heat exchange medium at which a 1 degreesC increase in the average temperature of the heat exchange medium results in a 5 degreesC increase of the hot spot temperature of the first reaction zone THS(1.zone); TSB(1.zone) = average temperature of the heat exchange medium; TSafety(1.zone) = safety temperature of the first reaction zone and is 1 degreesC; TSB,Amax(1.zone) = average temperature of the heat exchange medium in the first reaction zone in the region TSB(1.zone) of no greater than T (1.zone) corresponding to the maximum yield of maleic acid anhydride; T (1.zone) = 20 degreesC; T (1.zone) = 10 degreesC

    77.
    发明专利
    未知

    公开(公告)号：DE10202647A1

    公开(公告)日：2003-07-31

    申请号：DE10202647

    申请日：2002-01-23

    Applicant: BASF AG

    Inventor： WALSDORFF CHRISTIAN ,  BAIER MICHAEL ,  HARTH KLAUS ,  MALZ SUSANNE ,  RUPPEL WILHELM ,  SCHINDLER GOETZ-PETER

    IPC: C07B35/04 ,  C07C2/68 ,  C07C5/333 ,  C07C15/46 ,  C07D233/04

    Abstract: The invention relates to a method for producing alkenyl aromatic compounds. Said compounds are obtained by reacting alkyl aromatic compounds with a suitable catalyst in the presence of water vapour and natural gas or methane, at a temperature of between 400 and 800 DEG C and at a pressure of between 0.01 and 10 bar, whereby the molar ratio of water vapour to alkyl aromatic compound is from 6.9:1 to 1:1, or the molar ratio of methane to alkyl aromatic compound is from 0.1:1 to 8:1.

    79.
    发明专利
    未知

    公开(公告)号：DE59704619D1

    公开(公告)日：2001-10-18

    申请号：DE59704619

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： FETZER THOMAS ,  DEMUTH DIRK ,  RUETTER HEINZ ,  MENIG HELMUTH ,  RESCH PETER ,  RUPPEL WILHELM ,  WACHE HARRO

    IPC: C07B61/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: PCT No. PCT/EP97/06855 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/28250 PCT Pub. Date Jul. 2, 1998The present invention relates to a process for the preparation of carbonyl compounds of the formula in which R1 denotes a hydrogen atom or an alkyl radical containing from 1 to 3 carbon atoms, R2 denotes a hydrogen atom or a radical of the formula in which R3 denotes a hydrogen atom or, together with R4, an oxygen atom, R4 denotes the radical OR6 or, together with R3, an oxygen atom, R5 denotes a hydrogen atom or an alkyl radical containing from 1 to 8 carbon atoms or a cyclohexyl or cyclopentyl radical, and R6 denotes an alkyl radical containing 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, by gas-phase oxidation of methanol or alcohols of the formula in which R1 and R5 have the meanings specified above and R7 denotes a hydrogen atom or a radical OR8, and R8 denotes a hydrogen atom, an alkyl radical containing from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, using an oxygen-containing gas in the presence of a (copper and/or silver)-containing catalyst and a phosphorus compound which is volatile under the conditions of the reaction and is present in an amount such that the weight of phosphorus (calculated as P), based on the weight of alcohol used, is not more than 20 ppm, wherein the amount of phosphorus used is divided into at least two portions, of which a) the first portion is added together with the mixture of gaseous starting materials before this reaches the catalyst bed and b) at least one further portion is added within the catalyst bed.

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