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Journal of thermal analysis

, Volume 47, Issue 1, pp 227–234 | Cite as

Carbon deposition in methane reforming with carbon dioxide

Dry reforming
  • P. Gronchi
  • D. Fumagalli
  • R. Del Rosso
  • P. Centola
Article

Abstract

Coke formation in the dry reforming of methane was studied using a thermobalance (TG) and with a catalytic microreactor in the temperature range 800–950 K. Silica-supported and lanthana-supported nickel catalysts were examined. The effects of process variables such as temperature and gas composition (He dilution, CH4/CO2 ratio) on the coke formation rate were determined. The reactivity of H2 on several kinds of carbon was also investigated. The morphology of the coke was studied by scanning electron microscopy (SEM). The induction times for coke formation were significantly affected by temperature and by the CO content in the feed gas. The results of catalytic tests were consistent with the TG measurements. The behaviour of SiO2 and La2O3 supported Ni catalysts agree with a mechanism in which the lanthana support plays an important role in the carbon deposition.

Keywords

carbon deposition dry reforming Ni catalysts 

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Copyright information

© Akadémiai Kiadó 1996

Authors and Affiliations

  • P. Gronchi
    • 1
  • D. Fumagalli
    • 1
  • R. Del Rosso
    • 1
  • P. Centola
    • 1
  1. 1.Dipartimento di Chimica Industriale ed Ingegneria ChimicaPolitecnico di MilanoMilanoItaly

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