Patent ID: 8471075

Claim:
A process for producing ethanol, comprising: hydrogenating acetic acid in the presence of a catalyst comprising: Pt v Pd w Re x Sn y Ca p Si q O r , wherein: (i) the ratio of v:y is between 3:2 and 2:3, and/or (ii) the ratio of w:x is between 1:3 and 1:5; and p and q are selected such that p:q is from 1:20 to 1:200 with r being selected to satisfy valence requirements and v and w being selected such that: 0.005 ≤ ( 3.25 ⁢ ⁢ v + 1.75 ⁢ ⁢ w ) q ≤ 0.05 .