KATALYSATOR ZUR SELEKTIVEN HYDRIERUNG VON MEHRFACH UNGESÄTTIGTEM KOHLENWASSERSTOFF IN EINER OLEFINVERBINDUNG

• Main Authors: KITAMURA, TADAKUNI, YAZAKI, JUNICHI, TECHNICAL LAB.OF NISSAN GI, SATOU, YUZOU, TECHNICAL LAB.OF NISSAN GIRDL, TECHNICAL LAB.OF NISSAN GIRD, TECH. LAB.OF NISSAN GIRDLE, TAKEUCHI, KOUZOU, TECHNICAL LAB.OF NISSAN GIR, SUGETA, MORIYASU
• Format: Patent
• Language: German
• Published: 12.02.2004
• Edition: 7
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

A palladium-base catalyst which can selectively hydrogenate highly unsaturated hydrocarbon compounds contained in small amounts in an olefin compound prepared by steam cracking or the like of naphtha without causing hydrogenation of the olefin as a side reaction and the precipitation of a carbonaceous material. The catalyst comprises palladium and alumina, and the exposed face of each palladium crystallite is mainly accounted for by (100) and (110) faces. Further, in the desorption of adsorbed hydrogen by heating, desorption peaks are observed in the temperature ranges of 40 to 90 DEG C and of 120 to 170 DEG C and the ratio of hydrogen desorption amount of the former to the latter is (4 : 6) to (3 : 7).