Acrolein → 1,4-Butanediol
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C(C=C)=O.[H][H].C(O)C=C.[C]=O.[OH:13][CH2:14][CH2:15][CH2:16][CH:17]=[O:18]>[Cd].[Ag].[Ag].[Cd]>[OH:18][CH2:17][CH2:16][CH2:15][CH:14]=[O:13].[CH2:17]([OH:18])[CH2:16][CH2:15][CH2:14][OH:13]C(C=C)=O.[H][H].C(O)C=C.[C]=O.[OH:13][CH2:14][CH2:15][CH2:16][CH:17]=[O:18]>[Cd].[Ag].[Ag].[Cd]>[OH:18][CH2:17][CH2:16][CH2:15][CH:14]=[O:13].[CH2:17]([OH:18])[CH2:16][CH2:15][CH2:14][OH:13]One or more objects of the present invention are accomplished by the provision of a process for producing 1,4-butanediol which comprises (1) reacting acrolein with hydrogen in the vapor phase in the presence of a catalyst comprising a silver-cadmium alloy, wherein the atomic ratio of silver to cadmium in the alloy is in the range between about 0.1 and 3 to 1, to yield a hydrogenation product mixture containing allyl alcohol; (2) contacting the allyl alcohol product mixture with hydrogen and carbon monoxide under hydroformylation conditions to yield a product mixture containing 4-hydroxybutanal; (3) separating the 4-hydroxybutanal from the product mixture; and (4) hydrogenating the 4-hydroxybutanal to produce 1,4-butanediol.
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