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Inventor:
Irgang; Matthias
Address:
Heidelberg, DE
No. of patents:
28
Patents:












Patent Number Title Of Patent Date Issued
7157406 Catalysts or carriers which consist essentially of monoclinic zirconium dioxide January 2, 2007
Catalysts or carriers which consist essentially of monoclinic zirconium dioxide are prepared by pecipitation of zirconium salts with ammonia, by adding a zirconyl nitrate or zirconyl chloride solution to an aqueous ammonia solution at a decreasing pH from 14 to 6 and drying, calcining
6201160 Preparation of alcohols March 13, 2001
Alcohols are prepared by the catalytic hydrogenation of the corresponding carbonyl compounds at elevated temperatures and at superatmospheric pressure in the liquid phase by a process in which the catalyst used contains copper on an SiO.sub.2 -containing carrier in the presence or ab
6124234 Catalyst with fine-particle dispersion of the active component September 26, 2000
Catalysts prepared by combining M--Al.sub.2 O.sub.4 where M is an element of Group Ib, VIIb or VIII of the Periodic Table of the Elements with tin, lead, an element of group IIa or IIb of the Periodic Table of the Elements as oxide or salt or in elemental form and calcining at 300-1300.d
5783711 Process for the preparation of heterocyclic aldehydes July 21, 1998
Preparation of heterocyclic aldehydes I ##STR1## (A, B=optionally substituted methylene groups; m, n=1 to 5; m+n>2), by hydrogenation of carboxylic acids IIa ##STR2## or one of their esters IIb derived from a C.sub.1 -C.sub.10 alcohol, at a temperature of from 200.degree.
5763676 Preparation of aromatic aldehydes June 9, 1998
Aromatic aldehydes are prepared by catalytically reacting aromatic carboxylic acids or their esters with hydrogen in the gas phase at from 200.degree. to 450.degree. C. and from 0.1 to 20 bar in the presence of a zirconium dioxide/lanthanide catalyst having a high BET surface area of
5736484 Nickel-containing hydrogenation catalysts April 7, 1998
A catalyst suitable for hydrogenating organic compounds, essentially containing from 65 to 80% of nickel, calculated as nickel oxide, from 10 to 25% of silicon, calculated as silicon dioxide, from 2 to 10% of zirconium, calculated as zirconium oxide, and from 0 to 10% of aluminum, ca
5736076 Graphite moldings April 7, 1998
Moldings which comprise from 30 to 100% by weight of graphite, prepared from graphite powders which comprise from 5 to 100% by weight of rhombohedral crystalline graphite and, if required, contain additives and/or binders, and a process for their preparation and their use as catalyst
5714644 Process and catalyst for the selective hydrogenation of butynediol to butenediol February 3, 1998
A process is disclosed for the selective hydrogenation of butynediol to 2-butene-1,4-diol using a palladium catalyst to which either copper and zinc, or silver and zinc, or copper, silver and zinc are added as doping agents. In the preferred embodiment, it has been possible, by optimizin
5663438 Preparation of cyclic amines September 2, 1997
A process for the preparation of a phenyl amine which may be substituted by alkyl or cycloalkyl in which the corresponding cyolohexylamine is reduced at temperatures of 150.degree. to 300.degree. C. and pressures of 0.01 to 50 bar in the presence of a heterogeneous dehydrogenation cataly
5536691 Cobalt catalysts and a process required for their preparation July 16, 1996
Cobalt catalysts whose catalytically active material comprises from 55 to 98 wt % of cobalt, from 0.2 to 15 wt % of phosphorus, from 0.2 to 15 wt % of manganese, and from 0.2 to 15 wt % of alkali metal, calculated as oxide, in which the catalyst material is calcined in a first step at fi
5254738 Preparation of 1,4-alkylenediamines October 19, 1993
A process for the preparation of a 1,4-alkylenediamine of the general formula I ##STR1## in which the substituents R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1 -C.sub.10 -alkyl, phenyl or benzyl, by reacting a succinic dinitrile of the general formula II ##STR2##
5194675 Preparation of methyl formate March 16, 1993
Methyl formate is prepared by converting methanol over a copper-containing catalyst at elevated temperatures and in the gas phase by a process in which the catalyst used contains from 30 to 80% by weight of copper, calculated as CuO, as well as from 20 to 70% by weight of a magnesium
5166433 Catalyst and the amination of alcohols under hydrogenating conditions November 24, 1992
Catalysts whose active material contains, in addition to from 20 to 85% by weight, calculated as ZrO.sub.2, of oxygen-containing zirconium compounds, from 1 to 30% by weight, calculated as CuO, of oxygen-containing compounds of copper and from 1 to 40% by weight each, calculated as CoO o
5132427 Process for the preparation of amines July 21, 1992
A process for the preparation of amines of the formula ##STR1## in which R.sup.1 is the radical H.sub.2 N-CH.sub.2 and R.sup.2 is hydrogen, or R.sup.1 and R.sup.2 together form a bridging group --CH.sub.2 --, by reacting 1,3,6-tricyanohexane at elevated temperature and pressure w
5128307 Copper-containing catalyst for low temperature shift conversion July 7, 1992
Copper-containing catalysts for low temperature shift conversion at from 150.degree. to 300.degree. C. and under from 10 to 40 bar, which additionally contain aluminum and zinc, if necessary in the form of the compounds or oxides and are prepared by coprecipitation, the copper-contai
5120880 Preparation of muscone, intermediates for this preparation and preparation of said intermediates June 9, 1992
Muscone of the formula I ##STR1## is prepared by a process in which an open-chain 2,15-diketone of the general formula IIwhereX is one of the radicalsoris brought into contact, at from 300.degree. to 400.degree. C. in the presence of from 5 to 15% by weight, based on the amount of ca
5081311 Preparation of muscone, intermediates for this preparation and preparation of said intermediates January 14, 1992
Muscone of the formula I ##STR1## is prepared by a process in which an open-chain 2,15-diketone of the general formula IIwhere X is one of the radicalsis brought into contact, at from 300.degree. to 400.degree. C. in the presence of from 5 to 15% by weight, based on the amount of cat
5068468 Hydrogenation of acetylenic alcohols November 26, 1991
A process for the preparation of saturated alcohols by catalytic hydrogenation of acetylenic alcohols at a temperature of from 50.degree. to 200.degree. C. and under a pressure of from 30 to 320 bar, wherein use is made of a catalyst containing from 20 to 85% of nickel oxide, from 0 to
5037793 Catalyst for the hydrogenation of unsaturated aliphatic compounds August 6, 1991
A catalyst for the hydrogenation of unsaturated aliphatic compounds having a content of 20-70% w/w of nickel oxide, 25-45% w/w of zirconium oxide and 5-40% w/w of copper oxide, based on the oxidic, unreduced catalyst.
5015788 Process for the hydrogenation of acetylenic alcohols May 14, 1991
A process for the preparation of saturated alcohols by catalytic hydrogenation of acetylenic alcohols at a temperature of from 50.degree. to 200.degree. C. and under a pressure of from 30 to 320 bar, wherein the catalyst used has a content of from 20 to 75% of nickel oxide, from 10 to
5002922 Catalyst for the amination of alcohols under hydrogenating conditions March 26, 1991
Catalysts whose active material contains, in addition to from 20 to 85% by weight, calculated as ZrO.sub.2, of oxygen-containing zirconium compounds, from 1 to 30% by weight, calculated as CuO, of oxygen-containing compounds of copper and from 1 to 40% by weight each, calculated as CoO o
4950763 Preparation of ketones August 21, 1990
Ketones of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 independently of one another are each alkyl, cycyloalkyl, arylalkyl, aryl or hetaryl, and one or more of the radicals R.sup.1 and R.sup.2 carry one or more hydrogen atoms on the .alpha.-carbon atom, are prepare
4943671 Reductive dehalogenation of organic halogen compounds July 24, 1990
Organic halogen compounds in which one or more halogen atoms are covalently bonded to the carbon are subjected to reductive dehalogenation by reaction with a hydrocarbon in the presence of carbon at elevated temperatures with formation of a hydrogen halide, by a process in which the deha
4849395 Preparation of amorphous metal/magnesium silicates July 18, 1989
Amorphous metal/magnesium silicates of the general formulawhere M is a divalent, reducible metal atom from the group consisting of Cu, FeII, Co and Ni, x and y are numbers which together can add up to a value of 1.5 and n after drying, expressed in % by weight, ranges from 0 to 80 are pr
4780552 Preparation of furan by decarbonylation of furfural October 25, 1988
Furan is prepared by decarbonylation of furfural in the gas phase at elevated temperatures and under from 0.1 to 10 bar in the presence of hydrogen and a catalyst which contains platinum and/or rhodium and contains an alkali metal. The reaction is carried out in the presence of hydro
4711930 Honeycomb catalyst and its preparation December 8, 1987
A honeycomb catalyst consisting of from 30 to 95% by weight, calculated as Fe.sub.2 O.sub.3, of an iron compound and from 0.1 to 60% by weight, calculated as Al.sub.2 O.sub.3, CeO.sub.2 or Cr.sub.2 O.sub.3, of an aluminum, cerium and/or chromium compound and/or from 1 to 50% by weight
4536347 Selective hydrogenation of unsaturated carbonyl compounds August 20, 1985
Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of the corresponding .alpha., .beta.-unsaturated carbonyl compounds in the liquid phase are
4465787 Ruthenium-on-charcoal and ruthenium-on-carbon black hydrogenation catalysts, their preparation a August 14, 1984
Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of the corresponding .alpha.,.beta.-unsaturated carbonyl compounds in the liquid phase are p










 
 
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