eprintid: 12904
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/29/04
datestamp: 2023-11-10 03:27:28
lastmod: 2023-11-10 03:27:28
status_changed: 2023-11-10 01:49:49
type: article
metadata_visibility: show
creators_name: Shafiqah, M.-N.N.
creators_name: Tran, H.N.
creators_name: Nguyen, T.D.
creators_name: Phuong, P.T.T.
creators_name: Abdullah, B.
creators_name: Lam, S.S.
creators_name: Nguyen-Tri, P.
creators_name: Kumar, R.
creators_name: Nanda, S.
creators_name: Vo, D.-V.N.
title: Ethanol CO2 reforming on La2O3 and CeO2-promoted Cu/Al2O3 catalysts for enhanced hydrogen production
ispublished: pub
keywords: 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
note: cited By 23
abstract: 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
date: 2020
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074422903&doi=10.1016%2fj.ijhydene.2019.10.024&partnerID=40&md5=d104249ee6cd577c13e14f693769c195
id_number: 10.1016/j.ijhydene.2019.10.024
full_text_status: none
publication: International Journal of Hydrogen Energy
volume: 45
number: 36
pagerange: 18398-18410
refereed: TRUE
issn: 03603199
citation:   Shafiqah, M.-N.N. and Tran, H.N. and Nguyen, T.D. and Phuong, P.T.T. and Abdullah, B. and Lam, S.S. and Nguyen-Tri, P. and Kumar, R. and Nanda, S. and Vo, D.-V.N.  (2020) Ethanol CO2 reforming on La2O3 and CeO2-promoted Cu/Al2O3 catalysts for enhanced hydrogen production.  International Journal of Hydrogen Energy, 45 (36).  pp. 18398-18410.  ISSN 03603199