One pot and single step hydrolytic process for the conversion of lignocellulose into value added chemicals
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-037/54
C13K-013/00
출원번호
US-0500131
(2010-01-27)
등록번호
US-9267181
(2016-02-23)
국제출원번호
PCT/IN2010/000047
(2010-01-27)
§371/§102 date
20120404
(20120404)
국제공개번호
WO2011/092711
(2011-08-04)
발명자
/ 주소
Dhepe, Paresh Laxmikant
Sahu, Ramakanta
출원인 / 주소
Council of Scientific and Industrial Research
대리인 / 주소
Ladas & Parry LLP
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
The present invention provides a single step hydrolytic process for the conversion of lignocellulose, into value added chemicals wherein said process is catalyzed by at least one heterogeneous solid acid catalyst selected from a group comprising of zeolites, zeolites with Si/metal, mesoporous silica
The present invention provides a single step hydrolytic process for the conversion of lignocellulose, into value added chemicals wherein said process is catalyzed by at least one heterogeneous solid acid catalyst selected from a group comprising of zeolites, zeolites with Si/metal, mesoporous silica, oxides and phosphates, clays, ion-exchange resins, heteropolyacids, various sulfates, phosphates, selenates, crystalline materials and amorphous materials.
대표청구항▼
1. One pot and single step hydrolytic process for the conversion of lignocellulosic xylan to value added derivative products selected from the group consisting of xylose and arabinose wherein said process comprises:a. charging the xylan in a reactor followed by charging a solvent and at least one he
1. One pot and single step hydrolytic process for the conversion of lignocellulosic xylan to value added derivative products selected from the group consisting of xylose and arabinose wherein said process comprises:a. charging the xylan in a reactor followed by charging a solvent and at least one heterogeneous solid acid catalyst;b. adjusting the pressure to 1-70 bar and temperature in the range of 50-250° C. of the reactor, under stirring;c. raising the stirring speed to 10-2000 rpm after stabilizing the temperature of the reactor in the range 50-250° C.; andd. carrying the above said reaction for a period of 0.1 to 96 hours to obtain said value added derivative productwherein said heterogeneous solid acid catalyst is selected from the group consisting of HUSY™ (Si/Al=15), Cs0.25H0.5PW12040, Nb205, Al203, SO42-/ZRO2, A1-MCM-41 (Si/Al=50), A1-SBA-15 (Si/Al=10), an ion exchange resin sold under the trademark Amberlyst-15, SiO2-Al03 (Si/A1=15), Ga-MCM-41, sulfonated MCM-41, and Montmorillonite K10 (clay). 2. The process as claimed in claim 1, wherein i) said process comprises a step of flushing the reactor with inert gas or air after step (a) and before step b wherein said inert gas is selected from the group consisting of nitrogen, argon, helium and hydrogen; andii) the xylan to solvent ratio is in the range 0.001-0.5 wt/wt; or the xylan to catalyst ratio is in the range 0.2-500 wt/wt. 3. A process as claimed in claim 1, wherein the solvent in the reaction is optionally organic solvent or a mixture of water and organic solvent in a ratio of 1:99 to 99:1 and said organic solvent is selected from the group consisting of alcohols, ethers, esters, hexane, acids, toluene, and xylene.
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이 특허에 인용된 특허 (3)
Naae Douglas Gene ; Whittington Lawrence Edward ; Kieke Dan Edward, Catalytic method for the preparation of lignin phenol surfactants in organic solvents.
Absil Robert P. L. (Mantua NJ) Degnan Thomas F. (Moorestown NJ) Hatzikos George H. (Mantua NJ) Kowalski Jocelyn A. (Clarksboro NJ) Mebrahtu Thomas (Voorhees NJ) Yokomizo Grant H. (Edison NJ), Manufacture of improved zeolite Beta catalyst.
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