CATALYST, METHOD FOR PREPARING CATALYST, AND METHOD FOR PRODUCING UNSATURATED CARBOXYLIC ACID AND/OR UNSATURATED CARBOXYLIC ACID ESTER

CATALYST, METHOD FOR PREPARING CATALYST, AND METHOD FOR PRODUCING UNSATURATED CARBOXYLIC ACID AND/OR UNSATURATED CARBOXYLIC ACID ESTER

The present invention provides a catalyst in which an alkali metal element and at least one first metal element selected from among boron, magnesium, zirconium and hafnium are supported by a silanol group-containing carrier, wherein the average particle diameter of a compound of the first metal elem...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HASEGAWA, TOSHIO, FUJISUE, MASAYA, NINOMIYA, WATARU, HAYASHI, AKIO, KAWABE, NORIMICHI
Format: Patent
Sprache:eng ; fre
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:The present invention provides a catalyst in which an alkali metal element and at least one first metal element selected from among boron, magnesium, zirconium and hafnium are supported by a silanol group-containing carrier, wherein the average particle diameter of a compound of the first metal element is 0.4-50 nm, and expression (1) is satisfied when the molar ratio of the alkali metal element to the first metal element is X, the BET specific surface area of the catalyst is Y (m2/g), and the number of silanol groups per unit area of the catalyst (per nm2) is Z. Expression (1): 0.9×10-21 (g/unit)=X/(Y×Z)