from first principles PP-I-1

OP-III-19ZnAl 2 O 4 phases. XRD and TPR studies confirmed the formation of CuAl 2 O 4 spinel phaseduring calcination process in the case of copper catalysts. The presence of Cu + species on thecatalysts surface after reduction in 5%H 2 -95%Ar was confirmed by XPS technique for coppercatalysts. Activity tests carried out for prepared monometallic Cu, Ni, Ru, Pd/ZnAl 2 O 4supported catalysts using impregnation method showed that all catalysts were active inmethanol steam reforming reaction (SRM). The highest conversion of methanol was obtainedon Cu catalyst. This result can be explained by the higher concentration of Cu + and Cu 0species on the catalysts surface which are formed during reaction what confirms the redoxsurface mechanism. However, it is worth to note that comparison of copper to other metalliccatalysts leads to conclusion that only in the case of copper catalysts carbon monoxide wasnot formed. However, supported palladium catalyst exhibited the best performance inhydrogen formation in comparison to remaining noble metal catalysts. From the applicabilitypoint of view, methanol steam reforming is most favorable on copper catalyst due to no COformation and high yield of hydrogen production.Figure 1. Methanol steam reforming over various metal catalysts calcined in air at 400°C for 4 h(CH 3 OH : H 2 O = 1).Acknowledgements: The financial support of this work by the Foundation of Polish Sciencesupports (START - Programme Stipends for young researchers) is gratefully acknowledged.References:[1] N. Iwasa, M. Yoshikawa, W. Nomura, M. Arai, Appl. Catal. A: Gen. 292 (2005) 215.[2] P.P.C. Udani, P.V.D.S. Gunawardana, H.C. Lee, D.H. Kim, Int. J. Hydrogen Energy 34 (2009) 7648.[3] P. Serp, M. Corrias, F. Kalck, Applied Catal. A: General 253 (2003) 337.[4] S. Patel, KK. Pant, Chem. Eng. Sci. 62 (2007) 5436.[5] Belgian Academy Council of Applied Science (BACAS). Hydrogen as an energy carrier. Brussels: BACASreport; April, 2006.63