DE2560504

Graphite-contg. carbon for use as a carrier for platinum gp. catalysts (pref. 0.01-10 wt. %, esp. 0.1-5 wt. % of Pt or Ir) has a basis surface area of at least 100 m2/g. (pref. 150-1000 m2/g.); the ratio of the BET-surface area to the basis surface area is =5:1; and the ratio of the basis surface ar...

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Bibliographische Detailangaben
Hauptverfasser:	CLARK, JOHN TREVOR KENT, WEYBRIDGE, SURREY, GB, MACCARROLL, JOHN JAMES, CAMBERLEY, SURREY, GB, TENNISON, STEVEN ROBERT, NEW HAW, SURREY, GB
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF GENERAL METHODS OF ORGANIC CHEMISTRY INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Graphite-contg. carbon for use as a carrier for platinum gp. catalysts (pref. 0.01-10 wt. %, esp. 0.1-5 wt. % of Pt or Ir) has a basis surface area of at least 100 m2/g. (pref. 150-1000 m2/g.); the ratio of the BET-surface area to the basis surface area is =5:1; and the ratio of the basis surface area to the edge surface area is at least 5:1 (pref. >10:1, esp. >300:1). (The basis surface area is the area of crystal lamina main surfaces; the edge surface area denotes the area of crystal lamina edges; the BET-surface area is the sum of the basis surface area, edge surface area and the surface area of the amorphous phase). The catalyst may contain a minor amt. of alkali(ne earth) metal ions as modifiers (pref. Na) in a ratio of 10-300 atm. % w.r.t. the Pt. gp. metal. Catalysts contg. Pt.-gp. metals on the above graphite-contg. carbon support are esp. suitable for reactions involving hydrogen, in particular hydrogenation, dehydrogenation or dehydrocyclisation of hydrocarbons. High yields are obtained. Side reactions are suppressed.