%0 Journal Article
%@ 03603199
%A Shafiqah, M.-N.N.
%A Tran, H.N.
%A Nguyen, T.D.
%A Phuong, P.T.T.
%A Abdullah, B.
%A Lam, S.S.
%A Nguyen-Tri, P.
%A Kumar, R.
%A Nanda, S.
%A Vo, D.-V.N.
%D 2020
%F scholars:12904
%I Elsevier Ltd
%J International Journal of Hydrogen Energy
%K Activation energy; Carbon dioxide; Catalysts; Cerium oxide; Copper oxides; Crystallite size; Ethanol; Fischer-Tropsch synthesis; Hydrogen; Hydrogen production; Lanthanum oxides, CeO2; CO2 reforming; Cu-based catalyst; La2O3; Syn-gas, Aluminum compounds
%N 36
%P 18398-18410
%R 10.1016/j.ijhydene.2019.10.024
%T Ethanol CO2 reforming on La2O3 and CeO2-promoted Cu/Al2O3 catalysts for enhanced hydrogen production
%U https://khub.utp.edu.my/scholars/12904/
%V 45
%X 3Ce- and 3La-promoted 10Cu/Al2O3 catalysts were synthesized via a sequential incipient wetness impregnation approach and implemented for ethanol CO2 reforming (ECR) at 948�1023 K and stoichiometric feed ratio. CeO2 and La2O3 promoters reduced CuO crystallite size from 32.4 to 27.4 nm due to diluting impact and enhanced the degree of reduction of CuO � Cu0. Irrespective of reaction temperature, 3La�10Cu/Al2O3 exhibited the highest reactant conversions, H2 and CO yields followed by 3Ce�10Cu/Al2O3 and 10Cu/Al2O3. The greatest C2H5OH and CO2 conversions of 87.6 and 55.1, respectively were observed on 3La�10Cu/Al2O3 at 1023 K whereas for all catalysts, H2/CO ratios varying from 1.46 to 1.91 were preferred as feedstocks for Fischer-Tropsch synthesis. Activation energy for C2H5OH consumption was also reduced with promoter addition from 53.29 to 47.05 kJ mol�1. The thorough CuO � Cu0 reduction by H2 activation was evident and the Cu0 active phase was resistant to re-oxidation during ECR for all samples. Promoters addition reduced considerably the total carbon deposition from 40.04 to 27.55 and greatly suppressed non-active graphite formation from 26.94 to 4.20 because of their basic character and cycling redox enhancement. © 2019 Hydrogen Energy Publications LLC
%Z cited By 23