Title:
METHOD FOR PREPARING P-XYLENE BY BIOMASS CONVERSION
Document Type and Number:
WIPO Patent Application WO/2022/242731
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for preparing p-xylene (pX) by biomass conversion. The method comprises: (1) in a multi-phase system formed by an organic solvent, an inorganic salt, and water, by using hydrogen gas as a hydrogen source, making a biomass raw material contact a hydrogenation catalyst for reaction, and separating the obtained product to obtain an organic phase containing 2,5-hexanedione; (2) making the organic phase containing 2,5-hexanedione obtained in step (1) and ethylene contact a molecular sieve catalyst for reaction to obtain pX, wherein the molecular sieve catalyst is selected from at least one of an aluminophosphate molecular sieve and an SCM-14 molecular sieve. The method is simple to operate, has the advantages of high product selectivity, good catalyst stability, easy product separation, less reaction steps, and short time, and achieves green and efficient conversion of biomass to pX.
Inventors:
YANG WEIMIN (CN)
LI XIANGCHENG (CN)
WANG ZHENDONG (CN)
FENG XINQIANG (CN)
HAN XIAO (CN)
XU RUI (CN)
LIU CHUANG (CN)
YUAN ZHIQING (CN)
QIAO JIAN (CN)
LI XIANGCHENG (CN)
WANG ZHENDONG (CN)
FENG XINQIANG (CN)
HAN XIAO (CN)
XU RUI (CN)
LIU CHUANG (CN)
YUAN ZHIQING (CN)
QIAO JIAN (CN)
Application Number:
PCT/CN2022/094003
Publication Date:
November 24, 2022
Filing Date:
May 20, 2022
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SHANGHAI RES INST PETROCHEMICAL TECH SINOPEC (CN)
SHANGHAI RES INST PETROCHEMICAL TECH SINOPEC (CN)
International Classes:
C07C2/86; C07C1/20; C07C2/52; C07C2/88; C07C15/08
Foreign References:
| CN102482177A | 2012-05-30 | |||
| CN103814005A | 2014-05-21 | |||
| CN109081360A | 2018-12-25 | |||
| CN109081359A | 2018-12-25 | |||
| CN102596866A | 2012-07-18 | |||
| CN109081360B | 2020-10-27 | |||
| CN109081360A | 2018-12-25 | |||
| CN109081359A | 2018-12-25 |
Other References:
FENG XINQIANG, CUI ZIHENG, BAO YUFEI, CHU HAODONG, WU XUE, SHEN CHUN, TAN TIANWEI: "Is hydrolysis a bad news for p-xylene production from 2,5-dimethylfuran and ethylene? Mechanism investigation into the role of acid strength during 2,5-hexanedione conversion", JOURNAL OF CATALYSIS, ACADEMIC PRESS, DULUTH, MN., US, vol. 401, 1 September 2021 (2021-09-01), US , pages 214 - 223, XP093006158, ISSN: 0021-9517, DOI: 10.1016/j.jcat.2021.07.026
FENG XINQIANG: "Catalytic Production of P-xylene from 2,5-Dimethylfuran/2,5-hexanedione and Ethylene Over Solid Acid", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE (PH.D.) ENGINEERING SCIENCE AND TECHNOLOGY SERIES I, 15 March 2022 (2022-03-15), pages 1 - 159, XP093006161, DOI: 10.26939/d.cnki.gbhgu.2021.000186
ACS CATAL., vol. 2, 2012, pages 935 - 939
GREEN CHEMISTRY, vol. 20, 2018, pages 2027 - 2037
FENG XINQIANG: "Catalytic Production of P-xylene from 2,5-Dimethylfuran/2,5-hexanedione and Ethylene Over Solid Acid", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE (PH.D.) ENGINEERING SCIENCE AND TECHNOLOGY SERIES I, 15 March 2022 (2022-03-15), pages 1 - 159, XP093006161, DOI: 10.26939/d.cnki.gbhgu.2021.000186
ACS CATAL., vol. 2, 2012, pages 935 - 939
GREEN CHEMISTRY, vol. 20, 2018, pages 2027 - 2037
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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