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- W157797209 abstract "A new, highly selective and stable catalytic system for transforming formamides to nitriles, a bismuth phosphomolybdate having a 1:12:1 phosphorus-molybdenum-bismuth atomic ratio, gave a conversion of 100% of ethylformamide feed and an at least 91% molar yield of propionitrile at 450/sup 0/C with 3; 50% of water, a liquid hourly space velocity of 3, and an oxygen gas hourly space velocity of 4000 for a 4:1 oxygen-ethylformamide mole ratio. The oxygen was necessary to prevent catalyst deactivation and did not attack reactants or products. These operating variables and the catalyst composition were optimum for the ranges studied. The catalyst retained its activity during a 113 hr run. The reactivities of phenyl-, benzyl-, ethyl-, n-butyl-, and tert.-butyl-formamides were determined at temperatures, oxygen flows, and liquid hourly space velocities of 550/sup 0/C, 4000, and 3 (A) or 450/sup 0/C, 1600, and 0.4 (B); the phenylnitrile was obtained in the maximum yield of 97.5Vertical Bar3< under B conditions; other yields were lower." @default.
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- W157797209 date "1979-02-01" @default.
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- W157797209 title "New, highly selective and stable catalytic system for transforming formamides to nitriles" @default.
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