Pyrolysis experiments of isobutane, isobutylene, and 1-butene were performed over a temperature range of and a pressure of . The residence time was . The fuel conversion and product selectivity were analyzed at these temperatures. The pyrolysis experiments were performed to simulate the gas-phase chemistry that occurs in the anode channel of a solid-oxide fuel cell (SOFC). The experimental results confirm that molecular structure has a substantial impact on pyrolysis kinetics. The experimental data show considerable amounts of and higher species ( with isobutane at , with isobutylene at , and with 1-butene at ). The species are likely deposit precursors. The results confirm that hydrocarbon gas-phase kinetics have substantial impact on a SOFC operation.
Issue Section:
Research Papers
1.
Randolph
, K. L.
, and Dean
, A. M.
, 2007, “Hydrocarbon Fuel Effects in Solid-Oxide Fuel Cell Operation: An Experimental and Modeling Study of n–Hexane Pyrolysis
,” Phys. Chem. Chem. Phys.
1463-9076, 9
, pp. 4245
–4258
.2.
Sheng
, C. Y.
, and Dean
, A. M.
, 2004, “Importance of Gas-Phase Kinetics Within the Anode Channel of a Solid-Oxide Fuel Cell
,” J. Phys. Chem. A
1089-5639, 108
, pp. 3772
–3783
.3.
Kim
, T.
, Liu
, G.
, Boaro
, M.
, Lee
, S. -I.
, Vohs
, J. M.
, Gorte
, R. J.
, Al-Madhi
, O. H.
, and Dabbousi
, B. O.
, 2006, “A Study of Carbon Formation and Prevention in Hydrocarbon-Fueled SOFC
,” J. Power Sources
0378-7753, 155
, pp. 231
–238
.4.
McIntosh
, S.
, and Gorte
, R. J.
, 2004, “Direct Hydrocarbon Solid Oxide Fuel Cells
,” Chem. Rev. (Washington, D.C.)
0009-2665, 104
, pp. 4845
–4866
.5.
Konar
, R. S.
, Purnell
, J. H.
, and Quinn
, C. P.
, 1967, “The Initiation of Chains in the Pyrolysis of Isobutane
,” J. Chem. Soc. A
0022-4944, 10
, pp. 1543
–1545
.6.
Konar
, R. S.
, Marshall
, R. M.
, and Purnell
, J. H.
, 1973, “The Self-Inhibited Pyrolysis of Isobutane
,” Int. J. Chem. Kinet.
0538-8066, 5
, pp. 1007
–1021
.7.
Seres
, L.
, Marta
, F.
, and Kiss
, A.
, 1969, “Thermal Decomposition of Isobutene
,” Ber. Bunsenges. Phys. Chem.
0005-9021, 73
(6
), pp. 571
–575
.8.
Marta
, F.
, Seres
, L.
, and Kiss
, A.
, 1969, “Text of Plenary Lectures and Discussion of Symposium Papers
,” Symposium on Gas Kinetics
, Szeged, Hungary, p. 218
.9.
Hurd
, C. C.
, and Goldsby
, A. R.
, 1934, “Rearrangement During Pyrolysis of the Butenes
,” J. Am. Chem. Soc.
0002-7863, 56
(8
), pp. 1812
–1815
.10.
Schügerl
, K.
, and Happel
, J.
, 1969, “High Temperature Pyrolysis of Isobutene
,” Ind. Eng. Chem. Process Des. Dev.
0196-4305, 8
(3
), pp. 419
–431
.11.
Hurd
, C. D.
, and Spence
, L. U.
, 1929, “The Pyrolysis of Hydrocarbons: Isobutylene
,” J. Am. Chem. Soc.
0002-7863, 51
(12
), pp. 3561
–3572
.12.
Shevel’kova
, L. V.
, Ivanyuk
, A. V.
, and Nametkin
, N. S.
, 1980, “Comparative Study of Pyrolysis of n-Butane and Isobutane
,” Petrol. Chem. U.S.S.R.
, 20
(4
), pp. 201
–211
.13.
Konar
, R. S.
, Purnell
, J. H.
, and Quinn
, C. P.
, 1968, “Self-Inhibition and Mechanism of Isobutane Pyrolysis
,” Trans. Faraday Soc.
0014-7672, 64
, pp. 1319
–1328
.14.
Gupta
, G. K.
, Hecht
, E. S.
, Zhu
, H.
, Dean
, A. M.
, and Kee
, R. J.
, 2006, “Gas-Phase Reactions of Methane and Natural-Gas With Air and Steam in Non-Catalytic Regions of a Solid-Oxide Fuel Cell
,” J. Power Sources
0378-7753, 156
(2
), pp. 434
–447
.15.
Didenko
, L. P.
, Savchenko
, V. I.
, Arutyunov
, V. S.
, and Sementsova
, L. A.
, 2008, “Steam Reforming of Methane Mixtures With Ethylene Over an Industrial Nickel Catalyst
,” Petrol. Chem.
0965-5441, 48
(1
), pp. 22
–27
.16.
Sperle
, T.
, Chen
, D.
, Lodeng
, R.
, and Holmen
, A.
, 2005, “Pre-Reforming of Natural Gas on a Ni Catalyst: Criteria for Carbon Free Operation
,” Appl. Catal., A
0926-860X, 282
, pp. 195
–204
.17.
Graf
, P. O.
, Mojet
, B. L.
, Van Ommen
, J. G.
, and Lefferts
, L.
, 2007, “Comparative Study of Steam Reforming of Methane, Ethane and Ethylene on Pt, Rh and Pd Supported on Yttrium-Stabilized Zirconia
,” Appl. Catal., A
0926-860X, 332
, pp. 310
–317
.18.
Gupta
, G. K.
, Dean
, A. M.
, Hecht
, E. S.
, Zhu
, H.
, and Kee
, R. J.
, 2005, “Influence of Heterogeneous Chemistry and Electrochemistry on Gas-Phase Molecular Weight Growth and Deposit Formation
,” Solid Oxide Fuel Cells
, Vol. IX
, pp. 679
–688
.Copyright © 2010
by American Society of Mechanical Engineers
You do not currently have access to this content.
