Catalysts for making ethanol from acetic acid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/652
B01J-023/656
B01J-023/00
B01J-023/26
B01J-023/40
B01J-023/58
B01J-023/60
B01J-023/62
B01J-023/70
B01J-037/02
C07C-029/149
C07C-067/00
B01J-021/16
출원번호
US-0916000
(2013-06-12)
등록번호
US-9040443
(2015-05-26)
발명자
/ 주소
Johnston, Victor J.
Kimmich, Barbara F.
Potts, John L.
Weiner, Heiko
Wollrab, Radmila
Zink, James H.
Chapman, Josefina T.
Chen, Laiyuan
출원인 / 주소
Celanese International Corporation
인용정보
피인용 횟수 :
0인용 특허 :
124
초록▼
Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of cop
Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.
대표청구항▼
1. A process for preparing a catalyst, the process comprising the steps of: (a) contacting a first metal precursor to a first metal with a modified silicaceous support to form an impregnated support, wherein the modified silicaceous support comprises a silicaceous material and at least one metasilic
1. A process for preparing a catalyst, the process comprising the steps of: (a) contacting a first metal precursor to a first metal with a modified silicaceous support to form an impregnated support, wherein the modified silicaceous support comprises a silicaceous material and at least one metasilicate support modifier; and(b) heating the impregnated support under conditions effective to reduce the first metal and form the catalyst. 2. The process of claim 1, further comprising the steps of: (c) contacting the at least one metasilicate support modifier or a precursor thereof with the silicaceous material to form a modified support precursor;(d) heating the modified support precursor under conditions effective to form the modified support. 3. The process of claim 1, wherein at least part of the heating occurs under a reducing atmosphere. 4. The process of claim 1, further comprising the step of calcining the catalyst. 5. The process of claim 1, wherein the at least one metasilicate support modifier is selected from the group consisting of (i) alkaline earth metal metasilicates, (ii) alkali metal metasilicates, (iii) Group IIB metal metasilicates, (iv) Group IIIB metal metasilicates, and mixtures thereof. 6. The process of claim 1, wherein the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. 7. The process of claim 1, wherein the first metal is present in an amount of from 0.1 to 25 wt. %, based on the total weight of the catalyst. 8. The process of claim 1, wherein the at least one metasilicate support modifier is selected from metasilicates of a metal selected from the group consisting of sodium, potassium, magnesium, scandium, yttrium, calcium and zinc. 9. The process of claim 1, wherein the at least one metasilicate support modifier is present in the catalyst in an amount of 0.1 wt. % to 50 wt. %, based on the total weight of the catalyst. 10. The process of claim 1, wherein the modified silicaceous support is present in the catalyst in an amount from 25 wt. % to 99 wt. %, based on the total weight of the catalyst. 11. The process of claim 1, wherein the silicaceous material is selected from the group consisting of silica, silica/alumina, calcium metasilicate, pyrogenic silica, high purity silica and mixtures thereof. 12. The process of claim 1, further comprising the steps of impregnating and reducing a second metal precursor to a second metal different from the first metal on the support either before, after, or concurrently with steps (a) and (b). 13. The process of claim 12, wherein the first metal is platinum and the second metal is tin. 14. The process of claim 13, wherein the molar ratio of platinum to tin in the catalyst is from 0.4:0.6 to 0.6:0.4. 15. The process of claim 12, wherein the first metal is palladium and the second metal is rhenium. 16. The process of claim 15, wherein the molar ratio of rhenium to palladium in the catalyst is from 0.7:0.3 to 0.85:0.15. 17. The process of claim 12, wherein the second metal is selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel; and wherein the second metal is present in the catalyst in an amount of from 0.1 to 10 wt. %, based on the total weight of the catalyst. 18. The process of claim 12, further comprising the steps of impregnating and reducing a third metal precursor to a third metal different from the first metal and the second metal on the support either before, after, or concurrently with steps (a) and (b). 19. The process of claim 18, wherein the third metal is selected from the group consisting of cobalt, palladium, ruthenium, copper, zinc, platinum, tin, and rhenium and wherein the third metal is present in the catalyst in an amount from 0.05 to 4 wt. %, based on the total weight of the catalyst. 20. A process for preparing a catalyst, the process comprising the steps of: (a) providing a modified silicaceous support comprising a silicaceous material and at least one metasilicate support modifier selected from metasilicates of a metal selected from the group consisting of sodium, potassium, magnesium, scandium, yttrium, and zinc;(b) simultaneously contacting a first metal precursor to a first metal and a second metal precursor to a second metal with the modified silicaceous support to form an impregnated support, wherein the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten, and the second metal, being different than the first metal, is selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel; and(c) heating the impregnated support under conditions effective to reduce the first metal and form the catalyst.
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