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Hans-Peter Neumann Patents |
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Inventor: Neumann; Hans-Peter
Address: Ludwigshafen, DE
No. of patents: 15
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6998504 |
Method for the catalytic gas phase oxidation of propene into acrylic acid |
February 14, 2006 |
| A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with a high propene loading, in a first reaction stage, over a first fixed-bed catalyst which is housed in two successive reaction zones A, B, the react |
| 6846965 |
Method for the oligomerization of C2 C8-olefins |
January 25, 2005 |
| C.sub.2 -C.sub.8 -olefins are oligomerized in a process in which a stream of an olefin-containing hydrocarbon mixture is passed over a heterogeneous, nickel-containing oligomerization catalyst in n successive adiabatically operated reaction zones, where n.gtoreq.2, and the hydrocarbo |
| 6525217 |
Method for the catalytic gas-phase oxidation of propene to acrylic acid |
February 25, 2003 |
| A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-containing product gas mixture of the fi |
| 6395936 |
Method for the catalytic gas phase oxidation of propene into acrolein |
May 28, 2002 |
| In a process for the catalytic gas-phase oxidation of propene to acrolein, the reaction gas starting mixture is passed with a propene loading of .gtoreq.160 l(S.T.P.)/l.multidot.h over a fixed-bed catalyst which is housed in two spatially successive reaction zones A,B, the reaction zone |
| 6383976 |
Multimetal oxide material for gas-phase catalytic oxidation of organic compounds |
May 7, 2002 |
| The multimetal oxide materials essentially consisting ofwhere:X.sup.1 is Co and/or Ni,X.sup.2 is Si and/or Al,X.sup.3 is an alkali metal,0.3.ltoreq.a.ltoreq.1,2.ltoreq.b.ltoreq.10,0.5.ltoreq.c.ltoreq.10,0.ltoreq.d.ltoreq.10,0.ltoreq.e.ltoreq.0.5 andy is the absolute value of the number which, assumi |
| 6090977 |
Continuous heterogeneously catalyzed gas-phase partial oxidation of an organic compound |
July 18, 2000 |
| In a process for the continuous heterogeneously catalyzed gas-phase partial oxidation of an organic compound in an oxidation reactor, whose feed gas mixture comprises, apart from the organic compound to be partially oxidized and molecular oxygen as oxidant, at least one diluent gas which |
| 5808143 |
Catalyst based on oxides of Fe, Co, Bi and Mo |
September 15, 1998 |
| Catalysts of the formula IwhereA is bismuth, tellurium, antimony, tin and/or copper,B is molybdenum and/or tungsten,C is an alkali metal, thallium and/or samarium,D is an alkaline earth metal, nickel, copper, cobalt, manganese, zinc, tin, cerium, chromium, cadmium, molybdenum, bismuth and/or mer |
| 5705684 |
Preparation of acrolein, acrylic acid or a mixture thereof from propane |
January 6, 1998 |
| In a process for preparing acrolein, acrylic acid or a mixture thereof from propane, propane is partially dehydrogenated to propylene in a first stage, the product gas mixture resulting therefrom is, after separating off hydrogen and water vapor, used as feed to an oxidation reactor, the |
| 5684188 |
Continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid |
November 4, 1997 |
| In a process for the continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid or a mixture thereof in an oxidation reactor whose feed gas mixture comprises, apart from propylene and molecular oxygen as oxidant, only at least one diluent gas whic |
| 5583086 |
Cesium containing multimetal oxide catalyst compositions for the preparation of methacrolein by |
December 10, 1996 |
| Cesium based multimetal oxide compositions which are suitable as catalysts for the gas-phase-catalytic oxidative preparation of methacrolein from isobutene or tert-butanol or its methyl ether. The catalysts are characterized by increased selectivity for the formation of methacrolein. |
| 5583084 |
Multimetal oxide compositions |
December 10, 1996 |
| Multimetal oxide compositions having a two-phase structure and comprising molybdenum, hydrogen, one or more of the elements phosphorus, arsenic, boron, germanium and silicon, and their use for the preparation of methacrylic acid by gas-phase catalytic oxidation. |
| 5449821 |
Multimetal oxide compositions for gas-phase catalytic oxidation |
September 12, 1995 |
| A process for the gas phase catalytic oxidation of a C.sub.3-6 alkane, alkanol, alkene or alkenal using as a catalyst multimetal oxide compositions of the formula I, [X.sup.1.sub.a X.sup.2.sub.b O.sub.x ].sub.p [X.sup.3.sub.c X.sup.4.sub.d X.sup.5.sub.e X.sup.6.sub.f X.sup.7.sub.g X. |
| 5364825 |
Multimetal oxide compositions and process of preparing same |
November 15, 1994 |
| Multimetal oxide compositions of the formula IwhereX.sup.1 is bismuth, tellurium, antimony, tin and/or copper,X.sup.2 is molybdenum and/or tungsten,X.sup.3 is an alkali metal, thallium and/or samarium,X.sup.4 is an alkaline earth metal, nickel, cobalt, copper, manganese, zinc, tin, cadmium and/o |
| 5264625 |
Catalytic gas-phase oxidation of acrolein to acrylic acid |
November 23, 1993 |
| A process for the catalytic gas-phase oxidation of acrolein to acrylic acid in a fixed-bed reactor with contacting tubes, at elevated temperature on catalytically active oxides with a conversion of acrolein for a single pass of .gtoreq.95%, wherein the reaction temperature in the flow |
| 5231226 |
Catalytic gas-phase oxidation of methacrolein to methacrylic acid |
July 27, 1993 |
| A process for the catalytic gas-phase oxidation of methacrolein to methacrylic acid in a fixed-bed reactor with contacting tubes, at elevated temperature on catalytically active oxides with a conversion of methacrolein for a single pass of from 40 to 95 mol%, wherein the reaction tem |
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