| 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 |
