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Hydrogen Production by Ethanol Steam Reforming on Ni‐Based Catalysts: Effect of the Support and of CaO and Au Doping
Author(s) -
Menegazzo Federica,
Pizzolitto Cristina,
Zanardo Danny,
Signoretto Michela,
Buysschaert Cas,
Bény Guido,
Di Michele Alessandro
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201702053
Subject(s) - hydrogen production , catalysis , cerium oxide , steam reforming , calcium oxide , materials science , hydrogen , physisorption , inorganic chemistry , dopant , nanoparticle , doping , oxide , chemical engineering , nuclear chemistry , chemistry , metallurgy , nanotechnology , organic chemistry , optoelectronics , engineering
Abstract Nickel‐based catalysts were investigated for hydrogen production by ethanol steam reforming. A suitable support was assessed among the metal oxides TiO 2 , ZrO 2 and CeO 2 . Alongside catalytic testing with ethanol‐water mixture, a series of characterization measurements were carried out: N 2 ‐physisorption, XRD, TPR, TPO, CO 2 ‐TPD, SEM, AAS and IC. Zirconium and cerium oxides proved to be suitable supports, even if both still suffer from coking phenomena. The effects of doping both by calcium oxide and gold nanoparticles were checked. Doping by calcium oxide prevented deactivation and highly increased the hydrogen yield. Moreover, the addition of gold nanoparticles greatly improved the hydrogen yield. The combination of the two dopants resulted in the best performing catalyst: the basic doping by CaO and the promotion of the water gas shift reaction by gold nanoparticles contributed to the highest hydrogen production.