Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1991-05-13
1993-01-19
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
502 49, 502 52, 544242, 564159, B01J 2396, B01J 3814, B01J 3818, C07D23926
Patent
active
051807009
ABSTRACT:
The useful life of the palladium dehydrogenation catalyst used in the preparation of 2-alkylpyrimidines from 1,3-diaminopropane and an appropriate alkanecarboxylic acid in a continuous vapor phase process is substantially increased by employing a stoichiometric excess of the carboxylic acid and by using catalyst pellets of less than 3-4 mm diameters. Additionally, the dehydrogenation catalyst can be regenerated in situ by controlled air oxidation below 350.degree. C.
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M. Tsuchiya et al., Yakugaku Zasshi, vol. 96(8), pp. 1005-1012 (English translation supplied).
First Kenneth E.
Hull, Jr. John W.
Tai Eva F.
DowElanco
Konopka Paul E.
Loertscher Kenneth L.
Mixan Craig E.
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