Abstracts Book - IMRC 2018

• SF3-O040
BIMETALLIC COPPER-BASED ON CERIA CATALYSTS FOR
HYDROGEN PRODUCTION FROM METHANOL
Diego Daniel Gonzalez Araiza 1 , Antonio Gomez 1 , Gabriela Díaz 1
1 Instituto de Física - Universidad Nacional Autónoma de México, Física Química, Mexico.
Copper-based catalysts have been extensively used in reactions involving
methanol [1]. Methanol decomposition is considered as one of the simplest
reactions where methanol is used as a reagent, producing synthesis gas, a high
value reaction mixture [2]. For this reaction, copper has been usually supported
on ZnO, however some drawbacks have not been overcome yet, specifically, the
low activity and selectivity as well as deactivation issues related with coke
deposition [3]. Among many strategies to solve the above mentioned problems,
two are considered in the present work: i) one is related to the use of CeO 2 as
support, which due to its high oxygen storage capacity, could increase the
catalyst stability by improving the carbon deposits removal [4]; ii) the second
one is associated with addition of a second metal (Ni, Pd, Pt); bimetallic systems
usually exhibit better catalytic performances, compared to monometallic
systems [5]. In this framework here we present results concerning a series of
bimetallic Cu-M/CeO 2 catalysts (where M = Ni, Pd, Pt) prepared by coimpregnation
method at different metal concentrations, while keeping copper
as the most abundant metal. Catalysts were studied in the methanol
decomposition reaction (CH 3 OH ↔ 2H 2 + CO), taking attention on the effect of
the metal composition in the catalytic performance. Materials were
characterized by XRD, N 2 adsorption, EDS-SEM, HRTEM, Raman spectroscopy,
H 2 -TPR and CO-DRIFTS.
[1] J. Díez-Ramírez, F. Dorado, A. R. de la Osa, J. L. Valverde, P. SaÌ•nchez, Ind.
Eng. Chem. Res. 56 (2017) 1979-1987.
[2] S. D. Lin, T. C. Hsiao, L. C. Chen, Appl. Catal. A 360 (2009) 226-231.
[3] M. V. Twigg, M. S. Spencer, Appl. Catal. A 212 (2001) 161-174.
[4] A. Trovarelli, Catal. Rev. 38 (1996) 439-520.
[5] R. Ferrando, J. Jellinek, R. L. Johnston, Chem. Rev 108 (2008) 845-910.
Acknowledgment: