Processes for the preparation of 2-methylfuran and...

Details Processes for the preparation of 2-methylfuran and... Processes for the preparation of 2-methylfuran and...

2005-02-08

2005-02-08

Trinh, Ba K. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S429000, C549S497000, C549S505000, C549S506000

Reexamination Certificate

active

06852868

ABSTRACT:
Processes are disclosed for the preparation of 2-methylfuran and 2-methyltetrahydrofuran. The continuous vapor-phase processes are commercially viable and efficient because they permit the preparation of 2-methylfuran and 2-methyltetrahydrofuran using commercially-available catalysts, namely, a reduced copper-based catalyst consisting essentially of cupric oxide, chromium (III) oxide, manganese oxide and barium chromate and a reduced nickel-based catalyst consisting essentially of nickel, nickel (II) oxide, aluminum oxide and silica. An apparatus comprising two inline hydrogenators is used for preparing the 2-methylfuran or 2-methyltetrahydrofuran.

REFERENCES:
patent: 1739919 (1929-12-01), Ricard et al.
patent: 2273484 (1942-02-01), Guinot
patent: 2456187 (1948-12-01), Guinot
patent: 3021342 (1962-02-01), Manly
patent: 5912364 (1999-06-01), Beavers
patent: 6479677 (2002-11-01), Ahmed
Burnette et al., “Production of 2-Methylfuran by Vapor-Phase Hydrogenation of Furfural,” I&EC, 40 (3):502-505 (1948).
Brown et al., “Vapor Phase Hydrogenation of Furfural to Furfuryl Alcohol,” I&EC, 40 (3):1382-1385 (1949).

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