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OXYNITRIDE HYDRIDE, METAL CARRIER CONTAINING OXYNITRIDE HYDRIDE, AND CATALYST FOR AMMONIA SYNTHESIS

Foreign code F210010305
File No. J1014-33WO
Posted date 2021年1月29日
Country 世界知的所有権機関(WIPO)
International application number 2020JP007774
International publication number WO 2020175558
Date of international filing 令和2年2月26日(2020.2.26)
Date of international publication 令和2年9月3日(2020.9.3)
Priority data
  • 特願2019-034878 (2019.2.27) JP
Title OXYNITRIDE HYDRIDE, METAL CARRIER CONTAINING OXYNITRIDE HYDRIDE, AND CATALYST FOR AMMONIA SYNTHESIS
Abstract Provided is a perovskite-type oxynitride hydride that is, when used as a catalyst carrier, capable of facilitating synthesis by achieving both enhancement and stabilization of the catalyst performance. The present invention provides an oxynitride hydride represented by general formula (1a) or (1b). ABO3-xNyHz (1a) AB2O4-xNyHz (1b) (In general formulas (1a) and (1b), A indicates at least one type selected from the group consisting of Ba and Sr; B indicates at least one type selected from the group consisting of Ce, La, and Y; x indicates a number represented by 0.2 ≤ x ≤ 2.0; y indicates a number represented by 0.1 ≤ y ≤ 1.0; and z indicates a number represented by 0.1 ≤ z ≤ 1.0.)
Outline of related art and contending technology Background Art
An exemplary ammonia synthesis method, Hough Bosh method, uses a dual accelerated iron (d o u b l y p r omo t e d i r o n) catalyst containing A derivative 2 ○ 3 and K2 ○ of several mass% in F e3 ○ 4, The method for producing ammonia comprises directly reacting the catalyst with a mixed gas of nitrogen and hydrogen under high temperature and high pressure conditions. This technique is currently being industrially used in the manufacturing process which is almost completed.
A method of synthesizing ammonia at a temperature lower than the reaction temperature of the Harber-Bosh method has been studied. Catalysts capable of synthesizing ammonia by contact with nitrogen and hydrogen have been studied, and transition metals have been studied as their catalytically active components. Of these, a method in which ruthenium (R u) is supported on various supports as a catalytically active component and used as a catalyst for ammonia synthesis is proposed as an efficient method (, for example, Patent Document 1).
In addition, (, for example, Non-Patent Document 1), a metal-supported catalyst in which a metal oxide B aCe ○ 3 having a perovskite-type crystal structure is used as a support and R u is supported is reported. In addition, (, for example, Non-Patent Document 2), reported is a metal-supported catalyst (R U / B aCe i-xYx ○ 3-y) in which B aCe ○ 3 doped with Z r is used as a support and R u is supported.
— direction, nitrogen-doped B aCe2 .circle. 4 (oxynitride, B aCe2 (0 , N) 4), and the like have been reported, but there is no disclosure to use this as a catalyst for ammonia synthesis. (, for example, Non-Patent Document 3).
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • Inventor
  • KITANO Masaaki
  • HOSONO Hideo
  • YOKOYAMA Toshiharu
  • KUJIRAI Jun
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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