RT Journal Article
T1 The role of Lewis acidic vanadium centers in DME steam reforming over V-Ni catalysts
A1 González-Gil, Rafael
A1 Kovalik, P.
A1 Antoniak-Jurak, K.
A1 Lewalska-Graczyk, A.
A1 Herrera-Delgado, María Concepción
A1 Larrubia-Vargas, María Ángeles
A1 Pieta, P.
A1 Nowakowski, R.
A1 Pieta, I.S.
A1 Alemany-Arrebola, Luis José
K1 Catálisis
K1 Procesos químicos
AB Dimethyl ether (DME) as a potential chemical storage of renewable energy was studied for decomposition and steam reforming (DME SR) to produce hydrogen-rich streams over V-Ni/Al2O3 catalysts. The extent of DME decomposition, DME hydrolysis, and subsequent methanol steam reforming was examined during this study, focusing on the redox and acid/base properties of catalyst surface species. The results show that the DME SR performance depended on the acid-redox character of the Ni-O-Ni/V-O-Ni species dispersed onto alumina. For S/ C ratio close to 2.5, for relative V-rich catalysts, DME hydrolysis reaction over the Lewis acid sites was found a rate-determining step and then, metallic centers being responsible for H2 and CO2 production. For 3V-Ni/Al2O3 DME SR with low selectivity towards methane and direct H2 and CO2 production (H2/CO2 ratios close to 3), with near-complete DME conversion was obtained above 673 K.
PB Elsevier
YR 2012
FD 2012-05-05
LK https://hdl.handle.net/10630/36581
UL https://hdl.handle.net/10630/36581
LA eng
NO R. González-Gil, P. Kowalik, K. Antoniak-Jurak, A. Lewalska-Graczyk, C. Herrera, M.Á. Larrubia, P. Pieta, R. Nowakowski, I.S. Pieta, L.J. Alemany, The role of Lewis acidic vanadium centers in DME steam reforming over V-Ni catalysts, Chemical Engineering Journal, Volume 423, 2021, 129996, ISSN 1385-8947, https://doi.org/10.1016/j.cej.2021.129996. (https://www.sciencedirect.com/science/article/pii/S1385894721015801)
NO The authors acknowledge the National Science Centre Poland for funding through project SONATA-2013/11/D/ST5/03007 ‘Second generation of biofuel and near future alternative fuels - development of stable, selective and highly active for steam reforming process’ awarded to I.S.P with connected contracting agreement 2012/10/11 for “DME process and material development’ given to C.H., M.L., L.A., and SONATA scholarship contracts no. 2014/12/15 and 2015/06/01 given to R.G.G. C.H., M.L., L.A. gratefully acknowledge the contract no. 20170000000000998 ‘Development and characterization of advanced catalytic materials’ trough Reintegration FNP 2016/1-5 ‘Waste into fuel - catalyst and process development for waste biomass valorization’. The UBA is acknowledged for TPR.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 3 mar 2026