Steam-reforming of ethanol for hydrogen production

Ahmed Bshish, Zahira Yaakob, Binitha Narayanan, Resmi Ramakrishnan, Ali Ebshish

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Production of hydrogen by steam-reforming of ethanol has been performed using different catalytic systems. The present review focuses on various catalyst systems used for this purpose. The activity of catalysts depends on several factors such as the nature of the active metal catalyst and the catalyst support, the precursor used, the method adopted for catalyst preparation, and the presence of promoters as well as reaction conditions like the water-to-ethanol molar ratio, temperature, and space velocity. Among the active metals used to date for hydrogen production from ethanol, promoted-Ni is found to be a suitable choice in terms of the activity of the resulting catalyst. Cu is the most commonly used promoter with nickel-based catalysts to overcome the inactivity of nickel in the water-gas shift reaction. γ-Al 2O3 support has been preferred by many researchers because of its ability to withstand reaction conditions. However, γ-Al 2O3, being acidic, possesses the disadvantage of favouring ethanol dehydration to ethylene which is considered to be a source of carbon deposit found on the catalyst. To overcome this difficulty and to obtain the long-term catalyst stability, basic oxide supports such as CeO2, MgO, La2O3, etc. are mixed with alumina which neutralises the acidic sites. Most of the catalysts which can provide higher ethanol conversion and hydrogen selectivity were prepared by a combination of impregnation method and sol-gel method. High temperature and high water-to-ethanol molar ratio are two important factors in increasing the ethanol conversion and hydrogen selectivity, whereas an increase in pressure can adversely affect hydrogen production.

Original languageEnglish
Pages (from-to)251-266
Number of pages16
JournalChemical Papers
Volume65
Issue number3
DOIs
Publication statusPublished - Jun 2011

Fingerprint

Steam reforming
Steam
Hydrogen production
Hydrogen
Ethanol
Catalysts
Nickel
Water
Catalyst supports
Metals
Temperature
Aluminum Oxide
Polymethyl Methacrylate
Dehydration
Oxides
Water gas shift
Carbon
Gases
Gels
Impregnation

Keywords

  • catalytic system
  • ethanol
  • hydrogen production
  • steam-reforming

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Biochemistry
  • Industrial and Manufacturing Engineering
  • Materials Chemistry

Cite this

Bshish, A., Yaakob, Z., Narayanan, B., Ramakrishnan, R., & Ebshish, A. (2011). Steam-reforming of ethanol for hydrogen production. Chemical Papers, 65(3), 251-266. https://doi.org/10.2478/s11696-010-0100-0

Steam-reforming of ethanol for hydrogen production. / Bshish, Ahmed; Yaakob, Zahira; Narayanan, Binitha; Ramakrishnan, Resmi; Ebshish, Ali.

In: Chemical Papers, Vol. 65, No. 3, 06.2011, p. 251-266.

Research output: Contribution to journalArticle

Bshish, A, Yaakob, Z, Narayanan, B, Ramakrishnan, R & Ebshish, A 2011, 'Steam-reforming of ethanol for hydrogen production', Chemical Papers, vol. 65, no. 3, pp. 251-266. https://doi.org/10.2478/s11696-010-0100-0
Bshish A, Yaakob Z, Narayanan B, Ramakrishnan R, Ebshish A. Steam-reforming of ethanol for hydrogen production. Chemical Papers. 2011 Jun;65(3):251-266. https://doi.org/10.2478/s11696-010-0100-0
Bshish, Ahmed ; Yaakob, Zahira ; Narayanan, Binitha ; Ramakrishnan, Resmi ; Ebshish, Ali. / Steam-reforming of ethanol for hydrogen production. In: Chemical Papers. 2011 ; Vol. 65, No. 3. pp. 251-266.
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