Title:
PYROCHLORE COMPOSITE MATERIAL, AND PREPARATION METHOD AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/050865
Kind Code:
A1
Abstract:
A pyrochlore composite material, and a preparation method and use therefor, belonging to the technical field of acid gas treatment and resource recovery. The molecular formula of the pyrochlore composite material is: La 2Fe xZr 2-xO 7, 0 ≤ x ≤ 0.5, and is prepared by the following method: 1) preparing a precursor metal salt solution; 2) taking ammonia water, adding water for dilution to prepare a buffer solution; 3) adding dropwise the two described solutions simultaneously at a certain speed into a beaker containing distilled water, keeping the pH value at 10 ± 0.5, stirring, aging overnight, centrifugally washing and precipitating, and drying at 100-130 °C for more than 10 hours, so as to prepare a precursor material; 4) roasting the precursor material in air at above 800 °C for 4-6 hours to obtain a composite oxide catalyst La 2Fe xZr 2-xO 7. The pyrochlore composite oxide material is stable in structure, flexible in composition and catalytic performance, and the preparation method is simple and easy to implement. The material in a low-temperature range can efficiently convert H 2S , keeping high sulfur selectivity, and in a high-temperature range can completely decompose NH 3, showing excellent catalytic activity.
Inventors:
HAO ZHENGPING (CN)
JIANG GUOXIA (CN)
YANG ZHENWEN (CN)
ZHANG FENGLIAN (CN)
ZHAO MENGFEI (CN)
ZHANG ZHONGSHEN (CN)
JIANG GUOXIA (CN)
YANG ZHENWEN (CN)
ZHANG FENGLIAN (CN)
ZHAO MENGFEI (CN)
ZHANG ZHONGSHEN (CN)
Application Number:
PCT/CN2022/097750
Publication Date:
April 06, 2023
Filing Date:
June 09, 2022
Export Citation:
Assignee:
UNIV CAS (CN)
International Classes:
B01J23/83; B01D53/52; B01D53/58; B01D53/86; C01B3/02; C01B3/04; C01B17/04
Foreign References:
| CN105188917A | 2015-12-23 | |||
| CN105026316A | 2015-11-04 | |||
| US20150080213A1 | 2015-03-19 | |||
| JP2022061331A | 2022-04-18 |
Other References:
CHENG, J. ; LI, J. ; MA, C. ; HAO, Z.: "Catalytic combustion of methane over La"2TM"0"."3Zr"1"."7O"7"-"@d (TM=Mn, Fe, and Co) pyrochlore oxides", CATALYSIS COMMUNICATIONS, ELSEVIER, AMSTERDAM, NL, vol. 10, no. 8, 30 March 2009 (2009-03-30), AMSTERDAM, NL , pages 1170 - 1173, XP025980691, ISSN: 1566-7367, DOI: 10.1016/j.catcom.2009.01.006
MAURICIO, M. ET AL.: "Catalytic assessment of Fe-La-Zr trimetallic mixed oxides in the FischerTropsch synthesis using bio-syngas", BIOMASS AND BIOENERGY, vol. 127, 17 June 2019 (2019-06-17), XP085798035, DOI: 10.1016/j.biombioe.2019.105278
MAURICIO, M. ET AL.: "Catalytic assessment of Fe-La-Zr trimetallic mixed oxides in the FischerTropsch synthesis using bio-syngas", BIOMASS AND BIOENERGY, vol. 127, 17 June 2019 (2019-06-17), XP085798035, DOI: 10.1016/j.biombioe.2019.105278
Attorney, Agent or Firm:
QINGDAO FIRST PATENT & TRADEMARK AGENT CO., LTD. (CN)
Download PDF:
Previous Patent: DRAIN PAN AND AIR CONDITIONER
Next Patent: METASURFACE OF CURVED SUBSTRATE, AND PREPARATION METHOD FOR METASURFACE
Next Patent: METASURFACE OF CURVED SUBSTRATE, AND PREPARATION METHOD FOR METASURFACE