# US 8,569,203 B2 · Processes for making tin-containing catalysts > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,569,203 B2 - Document ID: US8569203B2 - Status: Granted - Kind: B2 - Application number: 13/487,728 - Filed: 2012-06-04 - Published: 2012-09-27 - Granted: 2013-10-29 - Earliest claimed: 2010-02-01 - Assignees: Celanese International Corporation - Applicants: Heiko Weiner; Radmila Jevtic; Victor Johnston - Inventors: Heiko Weiner; Radmila Jevtic; Victor Johnston - Web page: https://patentgrep.com/patent/US8569203B2 ## CPC - B01J 23/14: of germanium, tin or lead - B01J 23/626: {with tin} - B01J 35/613: {10-100 m2/g} - B01J 35/615: {100-500 m2/g} - B01J 35/633: {less than 0.5 ml/g} - B01J 35/635: {0.5-1.0 ml/g} - B01J 35/638: {more than 1.0 ml/g} - B01J 35/647: {2-50 nm} - B01J 35/651: {50-500 nm} - B01J 37/0201: {Impregnation} - B01J 37/0203: {the impregnation liquid containing organic compounds} - B01J 37/0207: {Pretreatment of the support} - C07C 29/149: with hydrogen or hydrogen-containing gases - B01J 23/26: Chromium - B01J 23/32: Manganese, technetium or rhenium - B01J 23/66: Silver or gold - B01J 23/835: with germanium, tin or lead - B01J 37/18: with gases containing free hydrogen - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS ## Abstract A process for producing a catalyst comprising the steps of contacting a support with a mixed metal precursor comprising tin oxalate, a second metal precursor, a solubilizing agent such as ammonium oxalate, and water to form an impregnated support and heating the impregnated support under conditions effective to remove at least a weight majority of the water and reduce the tin from the tin oxalate and the second metal from the second metal precursor and thereby form the catalyst. ## Claims ### Claim 1 A process for producing a catalyst, the process comprising the steps of: (a) contacting a support with a mixed metal precursor solution comprising tin oxalate, a second metal precursor to a second metal, a solubilizing agent, and water to form an impregnated support; and (b) heating the impregnated support under conditions effective to remove at least a weight majority of the water and reduce the tin from the tin oxalate and the second metal from the second metal precursor and form the catalyst; wherein the support is selected from the group consisting of iron oxide, silica, titania, zirconia, magnesium oxide, calcium silicate, carbon, graphite, high surface area graphitized carbon, activated carbons, and mixtures thereof; wherein the support comprises a support modifier selected from the group consisting of an acid support modifier and a redox support modifier and wherein the catalyst is a hydrogenation catalyst. ### Claim 2 (depends on 1) The process of claim 1, wherein the second metal precursor comprises a second metal oxalate. ### Claim 3 (depends on 1) The process of claim 1, wherein the second metal is platinum and the second metal precursor comprises platinum oxalate. ### Claim 4 (depends on 1) The process of claim 1, wherein the second metal is selected from the group consisting of iridium, rhodium, palladium, copper, cobalt, manganese, lead, chromium, thallium, iron, osmium, gold, silver, cadmium, rhenium, rhodium, and ruthenium. ### Claim 5 (depends on 1) The process of claim 1, wherein the heating step occurs under a reducing atmosphere at least in part. ### Claim 6 (depends on 1) The process of claim 1, wherein the heating step comprises a drying step and a reducing step. ### Claim 7 (depends on 1) The process of claim 1, further comprising the step of: (c) forming the mixed metal precursor by combining the tin oxalate, the second metal precursor, the solubilizing agent and the water. ### Claim 8 (depends on 1) The process of claim 1, wherein the contacting comprises contacting through incipient wetness techniques. ### Claim 9 (depends on 1) The process of claim 1, wherein the mixed metal precursor comprises the tin oxalate at a theoretical concentration of from 0.01 M to 0.1 M, the second metal precursor at a theoretical concentration of from 0.01 M to 0.1 M, and the solubilizing agent at a theoretical concentration of from 0.02 M to 0.32 M. ### Claim 10 (depends on 1) The process of claim 1, wherein the mixed metal precursor comprises the solubilizing agent and the tin oxalate at a molar ratio greater than 1:1. ### Claim 11 (depends on 1) The process of claim 1, wherein the mixed metal precursor comprises the tin oxalate, the second metal precursor, and the solubilizing agent in solution. ### Claim 12 (depends on 1) The process of claim 1, wherein the contacting is performed in a single step. ### Claim 13 (depends on 1) The process of claim 1, wherein the mixed metal precursor is at a temperature ranging from 20° C. to 30° C. during the contacting step. ### Claim 14 (depends on 1) The process of claim 1, wherein the redox support modifier is selected from the group consisting of WO3, MoO3, Fe2O3, Cr2O3 and combinations thereof. ### Claim 15 (depends on 1) The process of claim 1, wherein the heating is to a temperature from 120° C. to 200° C. ### Claim 16 (depends on 1) The process of claim 1, further comprising calcining the catalyst at a temperature from 225° C. to 500° C. to form a calcined catalyst. ### Claim 17 (depends on 1) The process of claim 1, further comprising: (c) contacting the support with a third metal precursor comprising a third metal not tin and different from the second metal; and (d) reducing the third metal precursor to form the third metal or its oxide on the support. ### Claim 18 (depends on 1) The process of claim 1, wherein the solubilizing agent is selected from the group consisting of sodium oxalate, potassium oxalate, ammonium oxalate, phosphonium oxalate, and combinations thereof. ### Claim 19 (depends on 1) The process of claim 1, wherein the support has a surface area of at least 200 m2/g. ### Claim 20 A process for producing a catalyst, the process comprising the steps of: (a) contacting a support with a mixed metal precursor solution comprising tin oxalate, a second metal precursor to a second metal, a solubilizing agent, and water to form an impregnated support; and (b) heating the impregnated support under conditions effective to remove at least a weight majority of the water and reduce the tin from the tin oxalate and the second metal from the second metal precursor and form the catalyst; wherein the support is selected from the group consisting of iron oxide, silica, titania, zirconia, magnesium oxide, calcium silicate, carbon, graphite, high surface area graphitized carbon, activated carbons, and mixtures thereof; wherein the solubilizing agent is selected from the group consisting of sodium oxalate, potassium oxalate, phosphonium oxalate, and combinations thereof; and wherein the catalyst is a hydrogenation catalyst.