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Hydrogen production by steam reforming of ethanol: Study of mixed oxide catalysts Ce2Zr1.5Me0.5O8: Comparison of Ni/Co and effect of Rh

✍ Scribed by Francisca Romero-Sarria; Julio César Vargas; Anne-Cécile Roger; Alain Kiennemann

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
468 KB
Volume
133-135
Category
Article
ISSN
0920-5861

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✦ Synopsis

One of the most interesting routes to produce energy from biomass is the production of hydrogen by bio-ethanol steam reforming. Deactivation, related to carbonaceous compounds deposition, is considered the principal inconvenience of the catalytic system based on transition metals supported on oxides. Carbon formation could be minimized using a support with good redox properties, a promoter, or enhancing the strong metalsupport interaction. In this work, a catalytic system based on doped Ce-Zr mixed oxides with Co, Ni, Rh, Rh-Co or Rh-Ni is synthesized using a pseudo sol-gel method, characterized by X-ray diffraction (XRD) and thermo-programmed reduction (TPR), and evaluated as catalyst in the steam reforming of ethanol.

Ethanol steam reforming and physicochemical characterization were performed in order to understand the active phase and the role of the promoter on the catalyst reduction state, the catalytic performance and the carbonaceous deposits formation.

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Study of Catalysts for Hydrogen Production by the High Temperature Steam Reforming of Methanol
✍ C. Zhang; Z. Yuan; N. Liu; S. Wang; S. Wang 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 249 KB 👁 2 views

## Abstract In the present study, a series of Ir‐based catalysts, supported on Al~2~O~3~, ZrO~2~, CeO~2~, and Ce~x~Zr~1‐x~O~2~, are investigated for the production of hydrogen by the high temperature steam reforming of methanol (SRM). Results show that CeO~2~ and Ce~x~Zr~1‐x~O~2~ can promote the CO