Solid catalysts for producing alcohols and methods of making the same
View Patent ↗An aspect of the present disclosure is a catalyst that includes a solid support, a first metal that includes at least one of ruthenium (Ru), platinum (Pt), palladium (Pd) deposited on the solid support, and a second metal comprising at least one of tin (Sn), rhenium (Re), cobalt (Co), molybdenum (Mo), or tungsten (W) deposited on the solid support, where the first metal and the second metal are present at a first metal to second metal mass ratio between about 1.0:2.0 and about 1.0:0.5.
1. A catalyst comprising:
a solid support, the solid support including an oxide;
a first metal deposited on the solid support, the first metal including at least one of ruthenium (Ru), platinum (Pt), palladium (Pd), the first metal is present at a first weight percent between about 2% and about 10%;
a second metal deposited on the solid support such that the second metal reacts with the and first metal creating a bimetallic powder dispersed upon the solid support, the second metal including at least one of tin (Sn), rhenium (Re), cobalt (Co), molybdenum (Mo), or tungsten (W); and
the first metal and the second metal are present in the catalyst at a first metal to second metal mass ratio between about 1.0:2.0 and about 1.0:0.5.
2. The catalyst of claim 1 , wherein the first metal is Ru.
3. The catalyst of claim 1 , wherein the second metal is Sn.
4. The catalyst of claim 1 , wherein the second metal is present at a second weight percent between about 2% and about 10%.
5. The catalyst of claim 1 , wherein the solid support has a total surface area between about 50 m 2 /g and about 1500 m 2 /g.
6. The catalyst of claim 1 , wherein the catalyst has an average particle size between about 10 mesh and about 400 mesh.
7. A method comprising:
providing hydrogen;
providing carboxylic acid;
providing a catalyst, the catalyst comprising:
a solid support, the solid support including activated carbon and an oxide,
a first metal deposited on the solid support, the first metal including at least one of ruthenium (Ru), platinum (Pt), palladium (Pd), the first metal is present at a first weight percent between about 2% and about 10%,
a second metal deposited on the solid support such that the second metal reacts with the oxide and first metal creating a bimetallic powder dispersed upon the solid support, the second metal including at least one of tin (Sn), rhenium (Re), cobalt (Co), molybdenum (Mo), or tungsten (W), and
the first metal and the second metal are present in the catalyst at a first metal to second metal mass ratio between about 1.0:2.0 and about 1.0:0.5; and
contacting the hydrogen, carboxylic acid, and catalyst such that at least a portion of the carboxylic acid is converted to an alcohol.
8. The method of claim 7 , wherein the carboxylic acid comprises at least one of acetic acid, propionic acid, lactic acid, succinic acid, or adipic acid.
9. The method of claim 7 , wherein the alcohol comprises at least one of ethanol, 1-propanol, 1,2-propanediol, 1,4-butanediol, or 1,6-hexanediol.
10. The method of claim 7 , wherein the portion is greater than 50 molar percent.
11. The method of claim 7 , wherein during the step of contacting, at least a portion of the catalyst is oxidized to yield an oxidized catalyst and the oxidized catalyst converts the portion of the carboxylic acid to the alcohol.
12. The method of claim 7 , wherein the step of contacting is performed in the absence of nickel (Ni) and chromium (Cr).
13. The method of claim 7 , wherein the step of contacting is performed in the absence of iron (Fe).
14. The method of claim 7 , wherein the step of contacting is performed using a mixture of the carboxylic acid and water.
15. The method of claim 7 , wherein the catalyst is present at an average particle size between about 10 mesh and about 400 mesh.
16. The method of claim 7 , wherein the contacting is performed at a temperature between about 25° C. and about 250° C.
17. The method of claim 7 , wherein the contacting is performed at a pressure between about 1 bar and about 500 bar.
18. A catalyst comprising:
a solid support, the solid support including activated carbon and an oxide;
a first metal deposited on the solid support, the first metal including at least one of ruthenium (Ru), platinum (Pt), palladium (Pd);
a second metal deposited on the solid support such that the second metal reacts with the oxide and first metal creating a bimetallic powder dispersed upon the solid support, the second metal including at least one of tin (Sn), rhenium (Re), cobalt (Co), molybdenum (Mo), or tungsten (W); and
the first metal and the second metal are present in the catalyst at a first metal to second metal mass ratio between about 1.0:2.0 and about 1.0:0.5.
19. The catalyst of claim 18 , wherein the first metal is Ru.
20. The catalyst of claim 18 , wherein the second metal is Sn.