초록 ▼

A process is provided for the vapor phase hydrogenation of carboxylic acids to yield their corresponding alcohols in the presence of steam and a catalyst comprising the mixed oxides of ruthenium, at least one of cobalt, nickel, and optionally one of cadmium, zinc, copper, iron, rhodium, palladium, o

A process is provided for the vapor phase hydrogenation of carboxylic acids to yield their corresponding alcohols in the presence of steam and a catalyst comprising the mixed oxides of ruthenium, at least one of cobalt, nickel, and optionally one of cadmium, zinc, copper, iron, rhodium, palladium, osmium, iridium and platinum. A process is further provided for the preparation of carboxylic acid esters from carboxylic acids in the absence of steam utilizing the above-identified catalysts.

대표청구항 ▼

A process for the production of carboxylic acid esters having from 2 to 20 carbon atoms from aliphatic carboxylic acids having from 1 to 10 carbon atoms, including contacting said carboxylic acids with hydrogen in the vapor phase in the absence of water in excess of the amount of water vapor formed

A process for the production of carboxylic acid esters having from 2 to 20 carbon atoms from aliphatic carboxylic acids having from 1 to 10 carbon atoms, including contacting said carboxylic acids with hydrogen in the vapor phase in the absence of water in excess of the amount of water vapor formed in situ, at a reaction temperature from about 150°C. to about 450°C. and a reaction pressure of about 250 psig to about 5000 psig in the presence of a catalyst represented by the formula ZnaRubDcEdOx wherein D=Co, Ni and mixtures thereof; E=Cd, Fe, Cu,, Rh, Pd, Os, Ir, Pt and mixtures thereof; and wherein a=greater than 0 to 1, b=0.01 to 3, c=0.01 to 3, d=0 to 1, x=the number of oxygens determined by the valence requirements of the other elements.