Methods for preparing ethylene glycol from polyhydroxy compounds
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-029/00
B01J-023/888
B01J-023/652
C07C-029/132
B01J-023/30
B01J-023/42
B01J-023/46
B01J-023/755
B01J-035/00
출원번호
US-0395470
(2010-11-04)
등록번호
US-9352304
(2016-05-31)
우선권정보
CN-2010 1 0125806 (2010-03-17)
국제출원번호
PCT/CN2010/078413
(2010-11-04)
§371/§102 date
20120312
(20120312)
국제공개번호
WO2011/113281
(2011-09-22)
발명자
/ 주소
Zhang, Tao
Tai, Zhijun
Wang, Aiqin
Zheng, Mingyuan
출원인 / 주소
DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
대리인 / 주소
Novick, Kim & Lee, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
This invention provides methods for producing ethylene glycol from polyhydroxy compounds such as cellulose, starch, hemicellulose, glucose, sucrose, fructose, fructan, xylose and soluble xylooligosaccharides. The methods uses polyhydroxy compounds as the reactant, a composite catalyst having active
This invention provides methods for producing ethylene glycol from polyhydroxy compounds such as cellulose, starch, hemicellulose, glucose, sucrose, fructose, fructan, xylose and soluble xylooligosaccharides. The methods uses polyhydroxy compounds as the reactant, a composite catalyst having active components comprising one or more transition metals of Groups 8, 9, or 10, including iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, as well as tungsten oxide, tungsten sulfide, tungsten hydroxide, tungsten chloride, tungsten bronze oxide, tungsten acid, tungstate, metatungstate acid, metatungstate, paratungstate acid, paratungstate, peroxotungstic acid, pertungstate, heteropoly acid containing tungsten. Reacting at a temperature of 120-300° C. and a hydrogen pressure of 1-13 MPa under hydrothermal conditions to accomplish one-step catalytic conversion. It realizes efficient, highly selective, high yield preparation of ethylene glycol and propylene glycol from polyhydroxy compounds. The advantage of processes disclosed in this invention include renewable raw material and high atom economy. At the same time, compared with other technologies that converts biomass raw materials into polyols, methods disclosed herein enjoy advantages including simple reaction process, high yield of targeted products, as well as easy preparation and low cost for the catalysts.
대표청구항▼
1. A method for producing ethylene glycol from a polyhydroxy compound, comprising the steps of: a) reacting a polyhydroxy compound in a reaction environment comprising water, hydrogen, and a catalyst system; andb) obtaining a product stream comprising ethylene glycol, wherein the catalyst system com
1. A method for producing ethylene glycol from a polyhydroxy compound, comprising the steps of: a) reacting a polyhydroxy compound in a reaction environment comprising water, hydrogen, and a catalyst system; andb) obtaining a product stream comprising ethylene glycol, wherein the catalyst system comprises catalyst A and catalyst B;the active component of catalyst A comprises a transition metal selected from the group consisting of elements in Group 8, 9, or 10 of the Periodic Table;the active component of catalyst B comprises a compound selected from a group consisting of tungsten oxide, tungsten sulfide, tungsten chloride, tungsten hydroxide, tungsten bronze oxide, tungsten acid, tungstate, metatungstate acid, metatungstate, paratungstate acid, paratungstate, peroxotungstic acid, pertungstate, heteropoly acid containing tungsten, and a mixture thereof. 2. The method of claim 1, wherein the reaction environment has an initial hydrogen pressure between 1 and 12 MPa at room temperature. 3. The method of claim 1, wherein the reaction temperature is above 120° C. 4. The method of claim 1, wherein the reaction temperature is between 180 and 250° C. 5. The method of claim 1, wherein catalyst A is a supported catalyst wherein the support is selected from the group consisting of activated carbon, alumina, silica, silicon carbide, zirconia, zinc oxide, titanium dioxide, and a mixture thereof. 6. The method of claim 5, wherein the active metal component of the catalyst A accounts for between 0.05 and 50 wt % of the total weight of the catalyst A. 7. The method of claim 1, wherein the catalyst A is a skeletal catalyst. 8. The method of claim 1, wherein the weight ratio of the polyhydroxy compound to water ranges from 1:200 to 1:1. 9. The method of claim 1, wherein the weight ratio of the polyhydroxy compound to a total weight of catalyst A and catalyst B ranges from 1:1 to 100:1. 10. The method of claim 1, wherein a weight ratio of active metal component of catalyst A to the active component of catalyst B, based on tungsten weight ranges from 0.1 to 100. 11. The method of claim 1, wherein the polyhydroxy compound is cellulose, starch, hemicellulose, sucrose, glucose, fructose, fructan, xylose, soluble xylooligosaccharides, or a mixture thereof. 12. The method of claim 1, wherein the polyhydroxy compound is derived from biomass. 13. The method of claim 1, wherein the product stream further comprises propylene glycol. 14. The method of claim 5, wherein the active metal component of the catalyst A accounts for between 1 and 30 wt % of the total weight of the catalyst A. 15. The method of claim 7, wherein the catalyst A is Raney nickel. 16. The method of claim 1, wherein catalyst B is an unsupported catalyst. 17. The method of claim 1, wherein the reaction is carried out in batch mode or in continuous mode. 18. The method of claim 1, wherein the reaction is carried out in a flow reactor chosen from a fixed bed reactor and a slurry reactor. 19. The method of claim 1, wherein the active component of catalyst A comprises a transition metal chosen from iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, and a mixture thereof. 20. The method of claim 1, wherein the active component of catalyst A is nickel. 21. The method of claim 1, wherein a weight ratio of the active component of catalyst A to the active component of catalyst B, based on tungsten weight ranges from 0.02 and 3000.
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이 특허에 인용된 특허 (11)
Thompson Levi T. ; Wixom Michael ; Tarnowski David ; Pu Cong, Catalyst.
Zhang, Tao; Wang, Aiqin; Zheng, Mingyuan; Li, Changzhi; Pang, Jifeng; Kalnes, Tom N.; Chen, John Q.; Kocal, Joseph A., Continuous catalytic generation of polyols from cellulose.
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