Patent ID: 11865519
Assignee: ETH ZURICH
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 0:
1. A Method to prepare a catalyst for use in a process for the synthesis of methanol, comprising indium oxide in the form of In2O3, and at least one additional metal selected from a noble metal; and in that the average particle size of said noble metal phase is, at least 0.05 nm, and less than 5 nm as determined by STEM-EDX, characterized in that the catalyst is prepared by co-precipitation of a saline solution at a pH above 8.5 comprising an indium salt and a salt of the at least one additional metal selected from a noble metal and optionally further comprising a salt of the at least one alkaline earth metal; comprising a further calcination step of the catalyst, wherein the calcined catalyst obtained comprised from 0.01 to 1.0 wt. % of the additional noble metal based on the total weight of the calcined catalyst and wherein the catalyst content of indium oxide in the form of In2O3 based on the calcined catalyst is ranging from 60 to 99.99 wt. %.