Title:
METHOD FOR PREPARING MONOPHENOL COMPOUND AND CO-PRODUCING CELLULOSE BY CATALYTICALLY OXIDIZING BIOMASS BY TRANSITION METAL OXIDE
Document Type and Number:
WIPO Patent Application WO/2021/109533
Kind Code:
A1
Abstract:
A method for preparing a monophenol compound and co-producing cellulose by catalytically oxidizing a biomass by a transition metal oxide. The method comprises the following steps: (1) putting a pre-treated dry basis biomass, a transition metal oxide, and an aqueous hydroxide solution of an alkali metal into a closed reaction container, introducing oxygen into the reaction container, stirring a reaction mixture for reaction, and performing cooling to obtain a suspension; (2) centrifuging the suspension to obtain a supernatant liquid and solid residues, using an acid liquid to acidify the supernatant liquid until a pH value is equal to 2-3, adding an organic solvent to extract a monophenol compound so as to obtain an organic solution, adding weak-base salt to the organic solution and removing water, and finally distilling the organic solution under reduced pressure to obtain the monophenol compound; and recycling a catalyst in the solid residues. The method uses lignocellulose as a raw material, oxygen as an oxidant, and a transition metal oxide as a catalyst, and prepares a monophenol chemical product and co-produces cellulose under mild conditions, thereby achieving the efficient utilization of lignocellulose.
Inventors:
WANG CHENGUANG (CN)
ZHU YUTING (CN)
MA LONGLONG (CN)
LIU JING (CN)
LV WEI (CN)
ZHANG QI (CN)
ZHU YUTING (CN)
MA LONGLONG (CN)
LIU JING (CN)
LV WEI (CN)
ZHANG QI (CN)
Application Number:
PCT/CN2020/096029
Publication Date:
June 10, 2021
Filing Date:
June 15, 2020
Export Citation:
Assignee:
GUANGZHOU INST ENERGY CONVERSION CAS (CN)
International Classes:
C07C45/27; C07C47/565; C07C47/575; C07C47/58; D21C5/00
Domestic Patent References:
| WO2017171652A1 | 2017-10-05 |
Foreign References:
| CN111116332A | 2020-05-08 | |||
| CN108164407A | 2018-06-15 |
Other References:
DAI BAOHUA, ZHANG CHAO; XIANG CHAO; ZOU SHUAI; ZHANG RONG; LIU YA-CHUN; FU ZAI-HUI: "Study on the Oxidation of Lignin by Molecular Oxygen into Phenolic Derivatives Catalyzed by Nano CuO under Mild Condition", HUNAN SHIFAN DAXUE XUEBAO - NATURAL SCIENCES JOURNAL OF HUNANNORMAL UNIVERSITY, GAI KAN BIAN WEI HUI, CHANGSHA, CN, vol. 37, no. 3, 1 June 2014 (2014-06-01), CN, pages 36 - 41, XP055817906, ISSN: 1000-2537
DU BOYU: "Recent Developments in Oxidative Degradation of Lignin", TECHNOLOGY AND ECONOMIC GUIDE, vol. 26, no. 25, 1 January 2018 (2018-01-01), pages 173 - 173, XP055817912, ISSN: 2096-1995
DU BOYU: "Recent Developments in Oxidative Degradation of Lignin", TECHNOLOGY AND ECONOMIC GUIDE, vol. 26, no. 25, 1 January 2018 (2018-01-01), pages 173 - 173, XP055817912, ISSN: 2096-1995
Attorney, Agent or Firm:
GUANGZHOU KEYUE I.P. LAW OFFICE (CN)
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