DE253160C - - Google Patents

Info

Publication number: DE253160C
Authority: DE; Germany
Prior art keywords: catalyst; metals; palladium; group; platinum
Prior art date: 1900-01-01
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

DENDAT253160D

Other languages

German (de)

English (en)

Publication date

1900-01-01

1900-01-01 Application granted granted Critical

1900-01-01 Publication of DE253160C publication Critical patent/DE253160C/de

Status Expired legal-status Critical Current

Links

KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 15
229910052751 metal Inorganic materials 0.000 claims description 11
239000002184 metal Substances 0.000 claims description 11
239000003054 catalyst Substances 0.000 claims description 9
BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 9
239000005977 Ethylene Substances 0.000 claims description 7
VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
229910052749 magnesium Inorganic materials 0.000 claims description 6
239000011777 magnesium Substances 0.000 claims description 6
150000002739 metals Chemical class 0.000 claims description 6
229910052763 palladium Inorganic materials 0.000 claims description 6
125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 5
239000001257 hydrogen Substances 0.000 claims description 5
229910052739 hydrogen Inorganic materials 0.000 claims description 5
XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
239000000203 mixture Substances 0.000 claims description 4
229910052697 platinum Inorganic materials 0.000 claims description 4
238000000034 method Methods 0.000 claims description 3
229910052759 nickel Inorganic materials 0.000 claims description 3
239000005092 Ruthenium Substances 0.000 claims description 2
229910052782 aluminium Inorganic materials 0.000 claims description 2
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
229910052793 cadmium Inorganic materials 0.000 claims description 2
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
229910052803 cobalt Inorganic materials 0.000 claims description 2
239000010941 cobalt Substances 0.000 claims description 2
229910052802 copper Inorganic materials 0.000 claims description 2
239000010949 copper Substances 0.000 claims description 2
RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
229910052741 iridium Inorganic materials 0.000 claims description 2
229910052742 iron Inorganic materials 0.000 claims description 2
229910052762 osmium Inorganic materials 0.000 claims description 2
SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 claims description 2
MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
229910052703 rhodium Inorganic materials 0.000 claims description 2
239000010948 rhodium Substances 0.000 claims description 2
KJTLSVCANCCWHF-UHFFFAOYSA-N ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 2
229910052707 ruthenium Inorganic materials 0.000 claims description 2
229910052709 silver Inorganic materials 0.000 claims description 2
239000004332 silver Substances 0.000 claims description 2
BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
229910052725 zinc Inorganic materials 0.000 claims description 2
239000011701 zinc Substances 0.000 claims description 2
238000006243 chemical reaction Methods 0.000 description 4
239000000126 substance Substances 0.000 description 4
239000010953 base metal Substances 0.000 description 3
230000015572 biosynthetic process Effects 0.000 description 3
230000003197 catalytic Effects 0.000 description 3
230000000694 effects Effects 0.000 description 3
238000005755 formation reaction Methods 0.000 description 3
239000007789 gas Substances 0.000 description 3
229910000510 noble metal Inorganic materials 0.000 description 3
239000012535 impurity Substances 0.000 description 2
239000010970 precious metal Substances 0.000 description 2
241001315609 Pittosporum crassifolium Species 0.000 description 1
238000010521 absorption reaction Methods 0.000 description 1
HSFWRNGVRCDJHI-UHFFFAOYSA-N acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
239000010425 asbestos Substances 0.000 description 1
OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
229910052570 clay Inorganic materials 0.000 description 1
239000004927 clay Substances 0.000 description 1
239000003245 coal Substances 0.000 description 1
150000002430 hydrocarbons Chemical class 0.000 description 1
238000007654 immersion Methods 0.000 description 1
230000000607 poisoning Effects 0.000 description 1
231100000572 poisoning Toxicity 0.000 description 1
229910052573 porcelain Inorganic materials 0.000 description 1
239000011148 porous material Substances 0.000 description 1
230000001681 protective Effects 0.000 description 1
229910052895 riebeckite Inorganic materials 0.000 description 1
239000002904 solvent Substances 0.000 description 1

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/60—Platinum group metals with zinc, cadmium or mercury
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
- C07C5/08—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds
- C07C5/09—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds to carbon-to-carbon double bonds
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/10—Magnesium; Oxides or hydroxides thereof
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/06—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of zinc, cadmium or mercury
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
- C07C2523/42—Platinum
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
- C07C2523/44—Palladium
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
- C07C2523/46—Ruthenium, rhodium, osmium or iridium
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/48—Silver or gold
- C07C2523/50—Silver
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/72—Copper
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/74—Iron group metals
- C07C2523/745—Iron
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/74—Iron group metals
- C07C2523/75—Cobalt
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/74—Iron group metals
- C07C2523/755—Nickel
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Chemical Kinetics & Catalysis (AREA)
Catalysts (AREA)

DENDAT253160D Expired DE253160C (es)

Publications (1)

Publication Number	Publication Date
DE253160C true DE253160C (es)	1900-01-01

Family

ID=511454

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DENDAT253160D Expired DE253160C (es)

Country Status (1)

Country	Link
DE (1)	DE253160C (es)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE912692C (de) *	1943-03-19	1954-06-03	Degussa	Verfahren zur Herstellung von Olefinen oder deren Derivaten
DE1052979B (de) *	1956-12-31	1959-03-19	Dow Chemical Co	Verfahren zur Entfernung von Acetylen aus einem vorwiegend AEthylen enthaltenden Gasgemisch durch selektive Hydrierung
DE1115238B (de) *	1957-02-05	1961-10-19	Basf Ag	Verfahren zur partiellen Hydrierung von Acetylenverbindungen
DE1123423B (de) *	1958-03-31	1962-02-08	Engelhard Ind Inc	Verfahren und Katalysator zum Hydrieren ungesaettigter pflanzlicher OEle
DE1171901B (de) *	1958-07-15	1964-06-11	Girdler Suedchemie Katalysator	Verfahren zur Entfernung von Acetylenen und Diolefinen aus Kohlenwasserstoffgasen oder deren Gemischen durch selektive Hydrierung
DE1289059B (de) *	1961-12-29	1969-02-13	Ethyl Corp	Katalytische Oxydation von unverbrannten Kohlenwasserstoffen und Kohlenmonoxyd aus Verbrennungsmotorabgasen
DE1793024B1 (de) *	1967-07-27	1972-03-09	Ici Ltd	Verfahren zur selektiven katalytischen Hydrierung
FR2160443A1 (es) *	1971-11-15	1973-06-29	Basf Ag
DE2431929A1 (de) *	1974-07-03	1976-01-22	Basf Ag	Katalysator zur partiellen hydrierung
US6930068B2 (en)	1999-12-15	2005-08-16	Nissan Motor Co., Ltd.	Methanol reforming catalyst

0
- DE DENDAT253160D patent/DE253160C/de not_active Expired

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE912692C (de) *	1943-03-19	1954-06-03	Degussa	Verfahren zur Herstellung von Olefinen oder deren Derivaten
DE1052979B (de) *	1956-12-31	1959-03-19	Dow Chemical Co	Verfahren zur Entfernung von Acetylen aus einem vorwiegend AEthylen enthaltenden Gasgemisch durch selektive Hydrierung
DE1115238B (de) *	1957-02-05	1961-10-19	Basf Ag	Verfahren zur partiellen Hydrierung von Acetylenverbindungen
DE1123423B (de) *	1958-03-31	1962-02-08	Engelhard Ind Inc	Verfahren und Katalysator zum Hydrieren ungesaettigter pflanzlicher OEle
DE1171901B (de) *	1958-07-15	1964-06-11	Girdler Suedchemie Katalysator	Verfahren zur Entfernung von Acetylenen und Diolefinen aus Kohlenwasserstoffgasen oder deren Gemischen durch selektive Hydrierung
DE1289059B (de) *	1961-12-29	1969-02-13	Ethyl Corp	Katalytische Oxydation von unverbrannten Kohlenwasserstoffen und Kohlenmonoxyd aus Verbrennungsmotorabgasen
DE1793024B1 (de) *	1967-07-27	1972-03-09	Ici Ltd	Verfahren zur selektiven katalytischen Hydrierung
FR2160443A1 (es) *	1971-11-15	1973-06-29	Basf Ag
DE2431929A1 (de) *	1974-07-03	1976-01-22	Basf Ag	Katalysator zur partiellen hydrierung
DE2431929B2 (de) *	1974-07-03	1976-07-01	Basf Ag, 6700 Ludwigshafen	Katalysator zur partiellen hydrierung
DE2431929C3 (de) *	1974-07-03	1981-04-02	Basf Ag, 6700 Ludwigshafen	Katalysator zur partiellen Hydrierung
US6930068B2 (en)	1999-12-15	2005-08-16	Nissan Motor Co., Ltd.	Methanol reforming catalyst

Publication	Publication Date	Title
DE253160C (es)	1900-01-01
EP0128383B1 (de)	1988-11-09	Verfahren zur Herstellung von Verschleissschutzschichten auf Oberflächen von Bauteilen aus Titan oder Titanbasislegierungen
DE2754712A1 (de)	1978-06-15	Katalysator fuer oxidations- und reduktionsreaktionen
DE2016358C3 (de)	1978-09-28	Verfahren zur Herstellung von Düsenkraftstoffen
DE2043424B2 (de)	1974-03-21	Verfahren zum Herstellen legierter, insbesondere nickellegierter Stähle
EP0092754A2 (de)	1983-11-02	Mit Edelmetall oder einer Edelmetallegierung beschichtetes elektrisches Kontaktstück
DE867686C (de)	1953-02-19	Verfahren zur Herstellung von Blausaeure
DE1564069C2 (de)	1974-07-18	Verbundwerkstoff für elektrische Kontakte
DE3147190C2 (de)	1985-06-27	Legierung auf Palladiumbasis
DE2350394C3 (de)	1978-03-02	Verfahren zur Verbesserung der Anlaufbeständigkeit von Silbergegenständen
DE868595C (de)	1953-02-26	Verfahren zur Herstellung von geformten Katalysatoren aus Platin und Platinlegierungen
DE2164123A1 (de)	1972-07-06	Vollmetallkatalysator
DE2500072A1 (de)	1975-07-10	Verfahren zur herstellung eines als katalysator-traegermaterial geeigneten mordenits, diesen mordenit enthaltende isomerisierungskatalysatoren und deren verwendung
DE931644C (de)	1955-08-16	Reaktionskammer
DE858898C (de)	1952-12-11	Goldlegierung
DE841446C (de)	1952-06-16	Katalysator zur Durchfuehrung chemischer Reaktionen
DE2557125C3 (de)	1979-05-23	Lösungen zum Aktivieren von Oberflächen
DE546828C (de)	1932-03-21	Verfahren zur Herstellung von fuer die Reduktion oder Hydrierung organischer Verbindungen geeigneten Katalysatoren
DE1793129C2 (es)	1974-06-12
DE929125C (de)	1955-06-20	Katalysator zur Oxydation von Ammoniak
DE324919C (de)	1920-09-04	Verfahren zur Darstellung von Pinakon
DE723475C (de)	1942-08-05	Kontaktkoerper zur Durchfuehrung katalytischer Reaktionen
DE339493C (de)	1921-07-27	Verfahren zur Darstellung von Aethan aus Acetylen und Wasserstoff
DE935428C (de)	1955-11-17	Verfahren zur Verhinderung von Russabscheidungen an Netzen aus Platin oder Platinlegierungen
DE352431C (de)	1922-04-27	Verfahren zur Herstellung eines Katalysators fuer die Hydrogenisation von ungesaettigten organischen Verbindungen