Patent ID: 9616415
Date: 2017-04-11
CPC Classifications: B01J,C07C

Claim:
1. A process, comprising the steps of: (a) providing a mixed metal oxide first catalyst having the empirical formula: and an X-ray diffraction pattern showing the orthorhombic phase as the major crystal phase with main peaks with 2θ at 6.7°, 7.8°, 22.1°, and 27.2°, wherein X is Te, Z is Pd, a=0.2 to 0.3, b=0.1 to 0.3, c=0.15 to 0.3, d=0.005 to 0.02, and n is determined by the oxidation states of the other elements; wherein a catalyst precursor is dried and then calcined at a temperature from 550 to 650° C. in an inert atmosphere consisting of nitrogen, argon, xenon, helium or mixtures thereof to produce the first catalyst; and (b) calcining the first catalyst at ambient atmospheric pressure at a temperature from 100 to 550° C. partly or wholly in an atmosphere that comprises water vapor to form a mixed metal oxide final catalyst.