Process for the preparation of succinic anhydride

Details Process for the preparation of succinic anhydride Process for the preparation of succinic anhydride

1996-01-11

1998-06-23

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

585250, 526270, 526908, 526915, C07D30760, C07C 500, C08F 2400

Patent

active

057707448

ABSTRACT:
Maleic anhydride can be hydrogenated with hydrogen to give succinic anhydride by a catalyzed liquid-phase hydrogenation, by carrying out the hydrogenation continuously at a pressure of 50 to 400 bar and a reaction temperature of 60.degree. to 180.degree. C. on oxygen-free and support-free shaped bodies arranged in the fixed bed, which shaped bodies are made of pressed powders of the elements of the iron subgroup of subgroup VIII of the Periodic Table of the Elements or of their alloys with each other or of their alloys with elements of subgroup VI; in addition, hydrogenation-inert elements can be present. The shaped bodies have a compressive strength of 20 to 250N and an internal surface area of 10 to 90 m.sup.2 /g.

REFERENCES:
patent: 2198153 (1940-04-01), Coons
patent: 5606099 (1997-02-01), Darsow
Ma, "Process for Making Succinic Anhydride . . . " CA, vol. 121 (1994), p. 8685.
Ullman Encyclopedia of Industrial Chemistry, 3rd ed., vol. 4, p. 318, (1953).
Chemical Abstracts, vol. 34, Abstract No. 4521, abstract of G.B. 567,952, (1939).
Chemical Abstracts, Abstract No. 54659, abstract of U.S. 2,198,153 (1940).
Chemical Abstracts, vol. 61, pp. 8195 & 285.
Chemical Abstracts, vol. 93, Abstract No. 93:71047b, p. 912, abstract of USSR 721,406, (1980).
Chemical Abstracts, vol. 79, Abstract No. 5013x, p. 425, abstract of JP 73-07,609 (1973).

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