Title:
CATALYST FOR DEHYDROGENATION OF ALKANES INTO OLEFINS AND PREPARATION THEREOF, AND DEHYDROGENATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/241881
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of catalytic dehydrogenation, and particularly discloses a preparation method for a catalyst for the dehydrogenation of alkanes into olefins, which comprises: recrystallizing a compound raw material capable of providing B, P, S and N elements in a solvent, heating the recrystallized product to 700-1000ºC in an ammonia-containing atmosphere at a heating rate of greater than or equal to 5ºC/min, and carrying out heat preservation and roasting to obtain the catalyst. In the compound raw material, the molar ratio of S:B is greater than or equal to 10; the molar ratio of P:B is greater than or equal to 0.5; and the molar ratio of N:B is greater than or equal to 10. The present invention also includes the catalyst prepared by the preparation method and the use of the catalyst in the preparation of olefins by means of direct or oxidative dehydrogenation of alkanes. According to the preparation method of the present invention, a special catalyst can be obtained, and the catalyst has a good conversion rate, as well as excellent product selectivity and stability.
Inventors:
ZHOU YONGHUA (CN)
LIN BAINING (CN)
XU FAN (CN)
LIU YUWEI (CN)
CHOU PUWEN (CN)
WANG HUAWEI (CN)
WANG LEI (CN)
WANG NING (CN)
LIN BAINING (CN)
XU FAN (CN)
LIU YUWEI (CN)
CHOU PUWEN (CN)
WANG HUAWEI (CN)
WANG LEI (CN)
WANG NING (CN)
Application Number:
PCT/CN2021/099761
Publication Date:
November 24, 2022
Filing Date:
June 11, 2021
Export Citation:
Assignee:
UNIV CENTRAL SOUTH (CN)
TIANJIN DAGU CHEMICAL CO LTD (CN)
TIANJIN DAGU CHEMICAL CO LTD (CN)
International Classes:
B01J27/24; B01J35/10; B01J37/08; C07C5/333
Foreign References:
| CN112390700A | 2021-02-23 | |||
| CN110201628A | 2019-09-06 | |||
| CN108295887A | 2018-07-20 | |||
| CN108043444A | 2018-05-18 | |||
| US20200030781A1 | 2020-01-30 | |||
| CN106140240A | 2016-11-23 |
Other References:
WU ZIHAO; ZHOU YANLIANG; YING HANGJUN; LIN JIAN; HAN WEI-QIANG: "Oxidative dehydrogenation of ethane using porous hexagonal boron nitride microtubes", CHEMICAL PHYSICS LETTERS, ELSEVIER BV, NL, vol. 746, 28 February 2020 (2020-02-28), NL , XP086115243, ISSN: 0009-2614, DOI: 10.1016/j.cplett.2020.137294
WANG TIAN-CHANG, YIN JIANG-LONG, GUO XIAO-JING, CHEN YAN, LANG WAN-ZHONG, GUO YA-JUN: "Modulating the crystallinity of boron nitride for propane oxidative dehydrogenation", JOURNAL OF CATALYSIS, ACADEMIC PRESS, DULUTH, MN., US, vol. 393, 1 January 2021 (2021-01-01), US , pages 149 - 158, XP093005775, ISSN: 0021-9517, DOI: 10.1016/j.jcat.2020.11.029
WANG TIAN-CHANG, YIN JIANG-LONG, GUO XIAO-JING, CHEN YAN, LANG WAN-ZHONG, GUO YA-JUN: "Modulating the crystallinity of boron nitride for propane oxidative dehydrogenation", JOURNAL OF CATALYSIS, ACADEMIC PRESS, DULUTH, MN., US, vol. 393, 1 January 2021 (2021-01-01), US , pages 149 - 158, XP093005775, ISSN: 0021-9517, DOI: 10.1016/j.jcat.2020.11.029
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY (CN)
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