Top > Search of International Patents > PHOTOREDUCTION CATALYST, METHOD FOR SYNTHESIZING AMMONIA USING SAME, AND METHOD FOR DECREASING NITROGEN OXIDE IN WATER USING SAME

PHOTOREDUCTION CATALYST, METHOD FOR SYNTHESIZING AMMONIA USING SAME, AND METHOD FOR DECREASING NITROGEN OXIDE IN WATER USING SAME

Foreign code F110005908
File No. S2009-1028-C0
Posted date Nov 9, 2011
Country WIPO
International application number 2010JP065157
International publication number WO 2011/027864
Date of international filing Sep 3, 2010
Date of international publication Mar 10, 2011
Priority data
  • P2009-204556 (Sep 4, 2009) JP
Title PHOTOREDUCTION CATALYST, METHOD FOR SYNTHESIZING AMMONIA USING SAME, AND METHOD FOR DECREASING NITROGEN OXIDE IN WATER USING SAME
Abstract Disclosed are: a catalyst which is capable of reducing and converting nitrate ions into ammonia without adding a hydrogen gas thereto; a method for synthesizing ammonia using the catalyst, wherein nitrate ions are reduced without adding a hydrogen gas thereto; and a method for decreasing nitrogen oxide in water by reducing nitrate ions contained in the water. Specifically disclosed is a photocatalyst composition that is obtained by loading a photocatalyst, which is capable of photoreducing protons into a hydrogen gas, with CuPd alloy nanoparticles. The photocatalyst composition is used for the purpose of producing ammonia by photoreducing nitrogen that is coexistent with water and nitrogen oxide. The CuPd alloy nanoparticles are (1) CuPd alloy nanoparticles having a B2 type crystal structure and represented by CuxPd(1-x) (wherein 0.3 < x < 0.7), (2) CuPd alloy nanoparticles having a bcc type crystal structure and represented by CuxPd(1-x) (wherein 0.3 < x < 0.7), (3) CuPd alloy nanoparticles having an fcc type crystal structure and represented by CuxPd(1-x) (wherein 0.01 <= x <= 0.99), (4) CuPd alloy nanoparticles having an L12 type crystal structure and represented by CuxPd(1-x) (wherein 0.7 <= x <= 0.98), or (5) CuPd alloy nanoparticles having a crystal structure wherein at least two of a B2 type portion, a bcc type portion, an fcc type portion, an L12 type portion and a phase separation type portion are mixed. Also specifically disclosed are a method for synthesizing ammonia using the photocatalyst composition, and a method for decreasing nitrogen oxide in water using the photocatalyst composition.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
  • Inventor
  • YAMAUCHI, Miho
  • ABE, Ryu
IPC(International Patent Classification)
Specified countries AE(UTILITY MODEL),AG,AL(UTILITY MODEL),AM(PROVISIONAL PATENT)(UTILITY MODEL),AO(UTILITY MODEL),AT(UTILITY MODEL),AU,AZ(UTILITY MODEL),BA,BB,BG(UTILITY MODEL),BH(UTILITY MODEL),BR(UTILITY MODEL),BW,BY(UTILITY MODEL),BZ(UTILITY MODEL),CA,CH,CL(UTILITY MODEL),CN(UTILITY MODEL),CO(UTILITY MODEL),CR(UTILITY MODEL),CU(INVENTOR'S CERTIFICATE),CZ(UTILITY MODEL),DE(UTILITY MODEL),DK(UTILITY MODEL),DM,DO(UTILITY MODEL),DZ,EC(UTILITY MODEL),EE(UTILITY MODEL),EG(UTILITY MODEL),ES(UTILITY MODEL),FI(UTILITY MODEL),GB,GD,GE(UTILITY MODEL),GH(UTILITY CERTIFICATE),GM,GT(UTILITY MODEL),HN(UTILITY MODEL),HR(CONSENSUAL PATENT),HU(UTILITY MODEL),ID,IL,IN,IS,JP(UTILITY MODEL),KE(UTILITY MODEL),KG(UTILITY MODEL),KM,KN,KP(INVENTOR'S CERTIFICATE)(UTILITY MODEL),KR(UTILITY MODEL),KZ(PROVISIONAL PATENT)(UTILITY MODEL),LA,LC,LK,LR,LS(UTILITY MODEL),LT,LU,LY,MA,MD(UTILITY MODEL),ME,MG,MK,MN,MW,MX(UTILITY MODEL),MY(UTILITY-INNOVATION),MZ(UTILITY MODEL),NA,NG,NI(UTILITY MODEL),NO,NZ,OM(UTILITY MODEL),PE(UTILITY MODEL),PG,PH(UTILITY MODEL),PL(UTILITY MODEL),PT(UTILITY MODEL),RO,RS(PETTY PATENT),RU(UTILITY MODEL),SC,SD,SE,SG,SK(UTILITY MODEL),SL(UTILITY MODEL),SM,ST,SV(UTILITY MODEL),SY,TH(PETTY PATENT),TJ(UTILITY MODEL),TM(PROVISIONAL PATENT),TN,TR(UTILITY MODEL),TT(UTILITY CERTIFICATE),TZ,UA(UTILITY MODEL),UG(UTILITY CERTIFICATE),US,UZ(UTILITY MODEL),VC(UTILITY CERTIFICATE),VN(PATENT FOR UTILITY SOLUTION),ZA,ZM,ZW,EP(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,SE,SI,SK,SM,TR),OA(BF(UTILITY MODEL),BJ(UTILITY MODEL),CF(UTILITY MODEL),CG(UTILITY MODEL),CI(UTILITY MODEL),CM(UTILITY MODEL),GA(UTILITY MODEL),GN(UTILITY MODEL),GQ(UTILITY MODEL),GW(UTILITY MODEL),ML(UTILITY MODEL),MR(UTILITY MODEL),NE(UTILITY MODEL),SN(UTILITY MODEL),TD(UTILITY MODEL),TG(UTILITY MODEL)),AP(BW(UTILITY MODEL),GH(UTILITY MODEL),GM(UTILITY MODEL),KE(UTILITY MODEL),LR(UTILITY MODEL),LS(UTILITY MODEL),MW(UTILITY MODEL),MZ(UTILITY MODEL),NA(UTILITY MODEL),SD(UTILITY MODEL),SL(UTILITY MODEL),SZ(UTILITY MODEL),TZ(UTILITY MODEL),UG(UTILITY MODEL),ZM(UTILITY MODEL),ZW(UTILITY MODEL)),EA(AM,AZ,BY,KG,KZ,MD,RU,TJ,TM)
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