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ELECTRON OR HYDRIDE ION ABSORBING/DESORBING MATERIAL, ELECTRON OR HYDRIDE ION ABSORBING/DESORBING COMPOSITION, TRANSITION METAL CARRIER AND CATALYST, AND USE THEREFOR NEW

外国特許コード F200010034
整理番号 K20203WO
掲載日 2020年1月31日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP010175
国際公開番号 WO 2019176987
国際出願日 平成31年3月13日(2019.3.13)
国際公開日 令和元年9月19日(2019.9.19)
優先権データ
  • 特願2018-046846 (2018.3.14) JP
発明の名称 (英語) ELECTRON OR HYDRIDE ION ABSORBING/DESORBING MATERIAL, ELECTRON OR HYDRIDE ION ABSORBING/DESORBING COMPOSITION, TRANSITION METAL CARRIER AND CATALYST, AND USE THEREFOR NEW
発明の概要(英語) The present invention provides: an electron or hydride ion absorbing/desorbing material using a lanthanoid hydride represented by formula Ln(HO) (in the formula, Ln represents a lanthanoid element), or an electron or hydride ion absorbing/desorbing composition including at least one lanthanoid hydride; a transition metal carrier that carries a transition metal to the same; and a catalyst including the transition metal carrier. An electron or hydride ion absorbing/desorbing material or an electron or hydride ion absorbing/desorbing composition according to the present invention has a higher capacity for absorbing/desorbing electrons or hydride ions than a conventional hydride-containing compound, and can be effectively used as a catalyst having an excellent ammonia synthesis activity by carrying a transition metal.
従来技術、競合技術の概要(英語) BACKGROUND ART
Ammonia synthesis, chemical industry and forms part of one of the processes, the catalyst and the iron oxide, potassium hydroxide is used as a promoter Cold Spring Harbor, (Haber-Bosch) Bosch popular method, this method, there was no large change in the year 100. Hard bar, in the ammonia synthesis by the Bosch method, 300 °C.-500 ° C., under high temperature and high pressure that the 20-40mpa, nitrogen and hydrogen gas over a catalyst reaction is performed. Containing hydrogen and nitrogen gas as raw material to reaction of ammonia is synthesized, shown in N2+3H2⇔2NH3, this reaction is an exothermic reaction, equilibrium is moved to the right may be higher for a low temperature, in order to reduce the number of molecules by the reaction, the equilibrium for the right side of the high voltage the better.
However, the nitrogen molecules are very strong between the nitrogen atoms has a triple bond, a highly reactive reaction between hydrogen and nitrogen are very slow poor. Thus, a triple bond of a nitrogen molecule to the development of the catalyst can be activated and was extremely important. Hard bar et al., the iron ore is used as a catalyst, which is composed mainly of iron oxide, alumina, or potassium oxide. Hard bar, the Bosch method, iron oxide as a catalyst is loaded into the reactor, the reaction is not limited to the actual reduced by hydrogen to be generated in the iron metal. Of the carrier is reduced and acts as an alumina, iron particles can be prevented from sintering, the iron particles as the base is potassium oxide in the catalyst and an electron-donating ability is enhanced. These effects are referred to as a double from the promoted iron catalysts. However, the iron catalyst may be used, the reaction rate is at a low temperature of 400°C or less is insufficient.
Industrial in the prior art, such as natural gas to produce hydrogen from a reformer, hydrogen and nitrogen in the atmosphere in the same plant and allowed to react under the conditions of the ammonia are combined. An ammonia catalyst is, Fe/Fe3O4 is the mainstream in the prior art, in recent years is a carrier activated Fe/C, Ru/C catalyst may be used.
Ru is carried on a carrier by forming the metal catalyst particles with an ammonia, ammonia synthesis is performed using this, the reaction can proceed at a low pressure is known, the ammonia synthesis catalyst 2 as the first generation has attracted attention. However, the ability of the catalyst alone or Ru is very small, and a triple bond of a nitrogen molecule, a nitrogen atom is adsorbed on the Ru metal catalyst particles in order to exert the ability to convert a material having a high electron-donating is preferably used at the same time, the basic material and the activated carbon Fe3O4 instead of a carrier, an alkali metal, alkali metal compounds, alkaline earth metal compounds and the like may be used in the accelerator compounds.
On the other hand, MTiO3 (M is, Ca, Ba, mg, Sr or Pb) or a perovskite type crystal structure represented by a layered perovskite crystal structure of titanium-containing oxide portion of the Ti or Hf, Zr substituted with at least one kind of titanium-containing oxides and the like (together, 'titanium-containing perovskite-type oxide' that) is, the capacitor having a very high dielectric constant material or a dielectric film such as a device, the, other perovskite-type transition metal oxide of the substrate material, such as from the viewpoint of the use of non-linear resistors, have been intensively studied for a long time.
Is Patent Document 1, formula 3 (O, H) ATi (A is, Ca2 +, Sr2 + or Ba2 +) based on the synthesis of titanium acid hydride (titanate oxyhydrides) has been reported, the acid halide is hydrogen, hydrogen as hydride (hydride: H -) (O2-) co-exist with the oxide ions and compounds, the precursor of ATiO3 CaH2, LiH, a metal hydride such as NaH topochemical (here, 'topochemical' is, the product of the molecular structure of a single-crystal structure means that the dominant) prepared by the reduction method. This acid hydride, a hydrogen ion, hydrogen or a mixed-conducting electrons, electron emission performance (that is, the absorption and emission capabilities or the ability to hydride ion absorption and release of electrons) having a characteristic.
Is Patent Document 2, containing titanium hydride (H -) and hydrogen halide is used as a carrier containing a perovskite type crystal structure, as a result, Ru, Fe catalyst activity such as by supporting a metal catalyst is formed, a specific action of the hydride (H -), ammonia synthesis activity and dramatically improved, and an alkali metal or alkaline earth metal is unstable or a compound thereof is used as a promoter compounds without, and also stable in the reaction for a long time, the highest known in the art highly active catalyst having activity significantly higher than the ammonia synthesis catalyst and, a low pressure of less than 20mpa of the ammonia synthesis can be achieved with high efficiency has been disclosed. In addition, in Patent Document 2, Ti-containing perovskite-type acid hydride gas or ammonia in the N2/H2 mixed gas is heated at a low temperature of 400-600 ° C. (H) and nitrogen (N) of the hydride exchange H/N through the nitride ion is introduced into the processes and, BaTi (O, H, N) 3 is formed is disclosed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • KOBAYASHI Yoji
  • KAGEYAMA Hiroshi
  • YAMASHITA Hiroki
  • BROUX Thibault
国際特許分類(IPC)
指定国 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 SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN 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
参考情報 (研究プロジェクト等) PRESTO Creation of Innovative Core Technology for Manufacture and Use of Energy Carriers from Renewable Energy AREA
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