Abstract: Low-temperature steam conversion (LTSC) of a methane-butane mixture (95% methane and 5% butane) into a methane-rich gas over an industrial Ni-based catalyst has been studied with the following reaction conditions: temperature 200–320°C, pressure 1 bar, gas hour space velocity 1200–3600 h–1, and steam to carbon ratio 0.64. A three-step macrokinetic model has been suggested based on the kinetic parameters found. The model includes the following reactions: (1) irreversible steam reforming; (2) CO2 methanation, which occurs in a quasi-equilibrium mode at temperatures above 260°C; (3) hydrogenolysis of propane and butane, which is essential at temperatures below 260°C. Steam reforming was shown to limit the overall reaction rate, whereas hydrogenolysis and CO2 methanation determined the product distribution in low- and high-temperature regions, respectively. Temperature dependencies of the product distribution for the LTSC of a model ternary methane-propane-butane mixture (85% methane, 10% propane, and 5% butane) have been successfully simulated using the three-step model suggested. © 2019 Wiley Periodicals, Inc.

Cite: Uskov S.I. , Shigarov A.B. , Potemkin D.I. , Snytnikov P.V. , Kirillov V.A. , Sobyanin V.A.
Three-Step Macrokinetic Model of Butane and Propane Steam Conversion to Methane-Rich Gas
International Journal of Chemical Kinetics. 2019. V.51. N10. P.731-735. DOI: 10.1002/kin.21304 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Mar 4, 2019
Accepted:	May 27, 2019
Published online:	Jun 10, 2019
Published print:	Oct 1, 2019

Identifiers:

Web of science:	WOS:000481798000001
Scopus:	2-s2.0-85067394512
Elibrary:	41686348
Chemical Abstracts:	2019:1117258
Chemical Abstracts (print):	171:252320
OpenAlex:	W2950447933

Citing:

DB	Citing
Scopus	5
Web of science	5
Elibrary	6
OpenAlex	5

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