OP-II-3

PP-III-64Hydrogen generation processes from NaBH 4 and NH 3 BH 3 have been studied inthe presence of different nanoscale (supported or not) catalysts containing Pt, Ru,Rh, Co, Ni. By varying the conditions of the catalyst preparation and the nature of theactive component and support it was possible to control the properties of thehydrogen-generating systems and the rate of the processes. Low cost andcatalytically effective cobalt catalysts are very attractive in developing on-demandhydrogen generation system for practical application. Different cobalt salts (CoCl 2 ,Co(NO 3 ) 2 , Co(CH 3 COO) 2 ), cobalt hydroxide and Co 3 O 4) were investigated as catalyticmaterials for the borohydride hydrolysis. During the investigation, it was found thatcobalt-based catalysts are being reduced in the reaction media of NaBH 4 hydrolysisto form the active ferromagnetic phase. Ferromagnetic property of the cobalt-basedcatalyst makes it convenient for being recycled from reaction products and allowsdesigning new type of catalytic reactors for portable applications. The data ofmagnetic susceptibility investigation indicated that new active phase consist of cobaltborides. Data of the study of dependence of the catalytic samples magneticsusceptibility values on temperature lead to conclusion that active catalytic phase isCo 2 B. Moreover catalytic samples prepared from Co 3 O 4 are characterized with highmagnetic susceptibility value and high level catalytic activity.It was showed that the rector of portable generator can be supplied by structuredcatalyst .Methods of macrostructured catalysts preparation have been developed.Using cobalt borides supported on Ni-foam allows to achieve next advantages:strength support, low hydrodynamic and aerodynamic resistance, easy separation ofspent solutions.The authors are thankful to the RFBR (grants № 09-08-00505-а и № 09-08-00546-а) for the financial support.REFERENCES[1]. S.C. Amendola, S.L. Sharp-Goldman, M.S. Janjua, M.T. Kelly, P.J. Petillo, M. Binger, J. PowerSources, 85 (2000) P. 186.[2]. Y. Kojima, K. Suzuki, K. Fukumoto, M. Sasaki, T. Yamamoto, Y. Kawai, H. Hayashi, Int. J.Hydrogen Energy, 27 (2002) P. 1029.[3]. V. Sumerin, F. Schulz, M. Nieger, M. Atsumi, C. Wang, M. Leskelä, P. Pyykkö, T. Repo, B.Rieger. J. Organomet. Chem. 2009. Vol. 694. P. 2654.[4]. B.H. Liu, Z.P. Li. J. Power Sources. 2009. Vol. 187. P. 527.[5]. V.I. Simagina, P.A. Storozhenko, O.V. Netskina, O.V. Komova, G.V. Odegova, Yu.V. Larichev,A.V. Ishchenko, A.M. Ozerova. Catalysis Today. 2008. Vol. 138. P. 253.558