Title:
METHOD FOR USING HYDRIDE AT ROOM TEMPERATURE TO CONVERT CARBONATE TO PRODUCE METHANE
Document Type and Number:
WIPO Patent Application WO/2021/023314
Kind Code:
A1
Abstract:
The present invention relates to the technical field of clean energy, and discloses a method for using a hydride at room temperature to convert a carbonate to produce methane. Specifically, the following steps are comprised: in a protected atmosphere, placing a carbonate and a hydride in a ball mill, and at room temperature, using the ball mill to perform a ball milling reaction and then obtaining a methane gas. The present invention achieves the goal of conversion of a carbonate into methane at room temperature. By means of the reaction between the hydride and the carbonate, methane is generated and stored, providing a novel method for reasonable usage of carbonates. The hydride is used to substitute H2, thus simultaneously avoiding the the problem of H2 being unsafe. A solid product nanoscale Ni produced in situ in the process of reacting the hydride in the ball mill has a smaller grain size, and can be compared to traditional catalysts as a catalyst for the carbonate methanation reaction. Said catalyst has a higher catalytic activity in the conditions of a room temperature ball mill, and at the same time, a metal hydride can be re-obtained from the solid product by means of hydrogen absorption by hydrogenation, thus allowing for cyclical usage of the hydride.
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Inventors:
OUYANG LIUZHANG (CN)
LIU FEN (CN)
ZHONG DAN (CN)
ZHU MIN (CN)
WANG HUI (CN)
LIU JIANGWEN (CN)
ZENG MEIQIN (CN)
LIU FEN (CN)
ZHONG DAN (CN)
ZHU MIN (CN)
WANG HUI (CN)
LIU JIANGWEN (CN)
ZENG MEIQIN (CN)
Application Number:
PCT/CN2020/118701
Publication Date:
February 11, 2021
Filing Date:
September 29, 2020
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
C07C9/04; B01J31/12; C07C1/32
Foreign References:
| CN110452081A | 2019-11-15 | |||
| CN110357759A | 2019-10-22 | |||
| CN107188118A | 2017-09-22 | |||
| CN106316732A | 2017-01-11 |
Other References:
TAI YUN-LONG; WANG LU; CHEN HAN-QING; DONG BAO-XIA; KAN XIAO-TIAN; TENG YUN-LEI: "Improved Mechanochemical Methanation Performance of the Metal Carbonate-Hydride System", SOLID STATE SCIENCES, vol. 109, 29 August 2020 (2020-08-29), pages 1 - 6, XP086356915, ISSN: 1293-2558, DOI: 10.1016/j.solidstatesciences.2020.106398
DONG BAO-XIA, WANG LU, ZHAO JUAN, TENG YUN-LEI, PING CHAO, ZHU WEI, CHEN HUA-BO, LIU WEN-LONG: "Highly Selective Room-Temperature Catalyst-Free Reduction of Alkaline Carbonates to Methane by Metal Hydride", ENERGY TECHNOLOGY, vol. 7, no. 3, 12 March 2019 (2019-03-12), pages 1 - 11, XP055778368, ISSN: 1293-2558, DOI: 10.1002/ente.201800719
ZHONG DAN; OUYANG LIUZHANG; LIU JIANGWEN; WANG HUI; JIA YI; ZHU MIN: "Metallic Ni Nanocatalyst in situ Formed from LaNi5H5 toward Efficient CO2 Methanation", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 44, no. 55, 20 March 2019 (2019-03-20), pages 29068 - 29074, XP085880304, ISSN: 0360-3199, DOI: 10.1016/j.ijhydene.2019.02.153
DONG BAO-XIA, WANG LU, ZHAO JUAN, TENG YUN-LEI, PING CHAO, ZHU WEI, CHEN HUA-BO, LIU WEN-LONG: "Highly Selective Room-Temperature Catalyst-Free Reduction of Alkaline Carbonates to Methane by Metal Hydride", ENERGY TECHNOLOGY, vol. 7, no. 3, 12 March 2019 (2019-03-12), pages 1 - 11, XP055778368, ISSN: 1293-2558, DOI: 10.1002/ente.201800719
ZHONG DAN; OUYANG LIUZHANG; LIU JIANGWEN; WANG HUI; JIA YI; ZHU MIN: "Metallic Ni Nanocatalyst in situ Formed from LaNi5H5 toward Efficient CO2 Methanation", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 44, no. 55, 20 March 2019 (2019-03-20), pages 29068 - 29074, XP085880304, ISSN: 0360-3199, DOI: 10.1016/j.ijhydene.2019.02.153
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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