VERFAHREN ZUR KATALYTISCHEN DEHYDRIERUNG VON AETHYLBENZOL

Dehydrogenation is in the presence of steam and a metal oxide catalyst, at increased temps. Catalyst particles have a spatial configuration such that ratio O/V. 1.000 is >0.2 cm-1 where 0 is geometrical surface of a catalyst particle; V is geometrical vol. of a catalyst particle and 1.000 is non-...

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Hauptverfasser:	SCHWETER,WALTER,.DR, SCHULZ,GERHARD,.DR, ROESCHEISEN,GERT,.DR, RUDOLF,.LAURER,PETER
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Dehydrogenation is in the presence of steam and a metal oxide catalyst, at increased temps. Catalyst particles have a spatial configuration such that ratio O/V. 1.000 is >0.2 cm-1 where 0 is geometrical surface of a catalyst particle; V is geometrical vol. of a catalyst particle and 1.000 is non-dimensional resistance coefft. Catalyst activity and selectivity is improved. Styrene yields are increased. Catalyst can be used in standard reactors, esp. tubular reactors without increasing initial press. Catalyst, contg. Fe oxide, Al2O3, CaO, ZnO, K2CO3 and KOH, was used as (A) star-shaped extruders, in which O/V. 1.000 ratio was = 0.358, and as (B) cylindrical control extrudates, in which ratio was 0.109. With (A), a yield of styrene at 595 degrees C and 41.5%, conversion was 92.8%, cf. 89.4% for use of (B) at 609 degrees C and same degree of conversion.