Isomerization of 4-methyl-. delta. /sup 4/-tetrahydrophthalic anhydride on palladium-alumina catalysts

Journal Article · Tue May 10 00:00:00 EDT 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6289038

Dokuchaeva, T G; Lezdin, S Yu; Sibarov, D A; Panfilova, N N; Mizinko, E G

4-Methyl-..delta../sup 4/-tetrahydrophthalic anhydride (MTHPA) used in the production of epoxide and polyester resins, has a drawback in that it is a solid, which complicates its use in formulations. In this work attempts were undertaken to obtain liquid isomeric MTHPA mixtures enriched in MHHPA anhydride, on palladium alumina catalyst regenerable under process conditions with low content of the active component. Isomerization of MTHPA was realized in a catalytic flow reactor in a nitrogen flux. The high activity of palladium alumina catalysts in obtaining liquid mixtures of MTHPA isomers was shown. The catalyzate contains four times more fully hydrogenated anhydride product than industrial mixtures. Palladium alumina catalysts can be used under industrial conditions as active and regenerable contact catalysts.

• Research Organization: Lensovet Leningrad Technological Institute (USSR)
• OSTI ID: 6289038
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 60:11; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANHYDRIDES
CATALYSIS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
ELEMENTS
ESTERS
FLUIDS
HETEROGENEOUS CATALYSIS
HYDROGENATION
ISOMERIZATION
ISOMERS
KINETICS
LIQUIDS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PHTHALIC ACID ESTERS
PLATINUM METALS
REACTION KINETICS
REGENERATION
TRANSITION ELEMENTS
YIELDS