AMMONIA DECOMPOSITION CATALYST

WIPO Patent Application WO/2010/098245

A1

Disclosed is an ammonia decomposition catalyst which is obtained by subjecting a complex to a heat treatment at a temperature of 360-900˚C in a reducing atmosphere, said complex being obtained by coordinating a transition metal to a polymer that is represented by formula (I) and has a molecular weight of 1,000-500,000, and adding activated carbon or a carbon nanotube to the polymer. In the case when a carbon nanotube is added, an alkali metal compound or an alkaline earth metal compound is added to the heat-treated complex. In formula (I), R1 represents H or a hydrocarbon group having 1-10 carbon atoms; R2 and R3 each represents H, a halogen, a nitro group, an acyl group, an ester group, a carboxyl group, a formyl group, a nitrile group, a sulfone group, an aryl group or an alkyl group having 1-15 carbon atoms; X and Y each represents H or OH; Z represents CH or N; R4 and R5 each represents H, OH, an ether group, an amino group, an aryl group or an alkyl group having 1-15 carbon atoms; x represents a real number between 1 and 2; y represents a real number between 1 and 3; and n represents a real number between 2 and 120. The ammonia decomposition catalyst is capable of increasing the amount of transition metal loaded thereon without lowering the dispersion of the transition metal, and is capable of reducing the use amount of catalyst necessary for obtaining desired activity.

HIKAZUDANI SUSUMU (JP)
MORI TAKUMA (JP)
INAZUMI CHIKASHI (JP)
NAKANISHI HARUYUKI (JP)
ARIKAWA HIDEKAZU (JP)
KUMAGAI HIRONOBU (JP)

PCT/JP2010/052410

September 02, 2010

February 18, 2010

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HITACHI SHIPBUILDING ENG CO (JP)
TOYOTA JIDOUSHA KABUSHIKI KAIS (JP)
IHARA CHEMICAL IND CO (JP)
HIKAZUDANI SUSUMU (JP)
MORI TAKUMA (JP)
INAZUMI CHIKASHI (JP)
NAKANISHI HARUYUKI (JP)
ARIKAWA HIDEKAZU (JP)
KUMAGAI HIRONOBU (JP)

B01J23/46; B01J37/08; B01J37/18; C01B3/04; C08G14/073

JP2001261302A	2001-09-26
JPH1085601A	1998-04-07
JPH0615041B2	1994-03-02
JP3760257B2	2006-03-29

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L.LI ET AL.: "Catalytic ammonia decomposition over Ru/carbon catalysts: The importance of the structure of carbon support", APPLIED CATALYSIS A: GENERAL, vol. 320, 22 March 2007 (2007-03-22), pages 166 - 172
S.-F.YIN ET AL.: "Nano Ru/CNTs: a highly active and stable catalyst for the generation of COx- free hydrogen in ammonia decomposition", APPLIED CATALYSIS B: ENVIRONMENTAL, vol. 48, no. 4, 8 April 2004 (2004-04-08), pages 237 - 241
F.R.GARCIA-GARCIA ET AL.: "High purity hydrogen production by low temperature catalytic ammonia decomposition in a multifunctional membrane reactor", CATALYSIS COMMUNICATIONS, vol. 9, no. 3, 1 March 2008 (2008-03-01), pages 482 - 486
See also references of EP 2402081A4

HIBI, Norihiko et al. (JP)
Norihiko Hibi (JP)

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