Hysteresis and reaction characterization of methane catalytic partial oxidation on rhodium catalyst

Wei-Hsin Chen, Tin Wei Chiu, Chen I. Hung, Mu Rong Lin

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Hysteresis effects and reaction characteristics of methane catalytic partial oxidation (CPO) in a fixed-bed reactor are numerically simulated. The reactions are modeled based on the experimental measurements of methane CPO with a rhodium (Rh) catalyst. Three C/O ratios of 0.6, 1.0 and 1.4 are considered in the study. When the Reynolds number is 200, the predictions indicate that the methane CPO is always triggered at around the inlet temperature of 550 K, regardless of what the C/O ratio is. It is of interest that if the inlet temperature is decreased after the methane CPO develops at higher inlet temperatures, the reversed path of methane conversion is different from the original path at lower inlet temperatures. The hysteresis effect of the methane CPO is thus observed. The hysteresis behavior implies that a higher yield of syngas or hydrogen can be achieved by controlling the reaction process. Decreasing the C/O ratio intensifies the methane CPO so that the hysteresis effect is more pronounced, and vice versa. An increase in Reynolds number delays the excitation temperature of methane CPO and lessens the hysteresis effect of methane conversion due to the growth of fluid inertial force. However, the hysteresis effect of the maximum temperature in the catalyst bed increases as a result of more methane consumption.

Original languageEnglish
Pages (from-to)467-477
Number of pages11
JournalJournal of Power Sources
Volume194
Issue number1
DOIs
Publication statusPublished - 2009 Oct 20

Fingerprint

Rhodium
Methane
rhodium
Hysteresis
methane
hysteresis
catalysts
Oxidation
oxidation
Catalysts
inlet temperature
Temperature
beds
Reynolds number
synthesis gas
inertia
Hydrogen
reactors

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Chen, Wei-Hsin ; Chiu, Tin Wei ; Hung, Chen I. ; Lin, Mu Rong. / Hysteresis and reaction characterization of methane catalytic partial oxidation on rhodium catalyst. In: Journal of Power Sources. 2009 ; Vol. 194, No. 1. pp. 467-477.
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Hysteresis and reaction characterization of methane catalytic partial oxidation on rhodium catalyst. / Chen, Wei-Hsin; Chiu, Tin Wei; Hung, Chen I.; Lin, Mu Rong.

In: Journal of Power Sources, Vol. 194, No. 1, 20.10.2009, p. 467-477.

Research output: Contribution to journalArticle

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