Use of shaped articles as a catalyst for preparing caprolactam

Shaped articles essentially comprising a catalytically active oxide are used as a catalyst which has no soluble constituents under the reaction conditions for preparing cyclic lactams by reacting aminocarbonitriles with water in the liquid phase in a fixed bed reactor, said catalyst consisting or sh...

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Bibliographische Detailangaben
Hauptverfasser:	FUCHS, EBERHARD DR, FLICK, KLEMENS DR
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Shaped articles essentially comprising a catalytically active oxide are used as a catalyst which has no soluble constituents under the reaction conditions for preparing cyclic lactams by reacting aminocarbonitriles with water in the liquid phase in a fixed bed reactor, said catalyst consisting or shaped articles obtainable by shaping the oxide into shaped articles and, before or after said shaping, treating the oxide with from 0.1 to 30% by weight, based on the oxide, of an acid in which the oxide is sparingly soluble.