Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 21, 2008
Accepted July 8, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

Autothermal reforming of methane to syngas with palladium catalysts and an electric metal monolith heater

Kyoungmo Koo Jaekyung Yoon¹ Changha Lee Hyunku Joo^1†

Chemical Eng. Dept., Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Korea ¹Climate Change Technology Division, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea

hkjoo@kier.re.kr

Korean Journal of Chemical Engineering, September 2008, 25(5), 1054-1059(6), 10.1007/s11814-008-0172-5

Download PDF

Abstract

The autothermal reforming of methane to syngas for use in the Fischer-Tropsch synthesis was studied in this work over PdO containing various combinations of CeO2, BaO or SrO in a washcoated form on a metallic monolith at atmospheric pressure. This study focused on the autothermal operation of the system, in which an electric heater inside the reactor was used only to reach the ignition temperature, and thereafter the autothermal reaction successfully sustained itself without any external heat source. It was concluded from the experiments that the PdO/Al2O3 catalyst was better than the others, except for PdO-CeO2-BaO-SrO/Al2O3, which showed similar performance in terms of the CH4 conversion and H2+CO selectivity, while affording a higher H2/CO ratio (close to ca. 3) than the PdO/Al2O3 catalyst did (close to ca. 2). The gas hourly space velocity and O2/CH4 ratio governed the methane conversion, while the H2O/ CH4 ratio controlled the H2/CO ratio. A methane conversion of ~87%, H2+CO selectivity of ~94%, H2/CO ratio of ≤2.9, and M factor .2.15 were obtained under the conditions of a gas hourly space velocity (GHSV) of 120,000 h-1, O2/CH4=0.6 and H2O/CH4=0.5.

Keywords

Autothermal Reforming Palladium Syngas F-T Synthesis H2/CO Ratio

References

Horn R, Williams KA, Degenstein NJ, Bitsch-Larsen A, Nogare DD, Tupy SA, Schmidt LD, J. Catal., 249(2), 380 (2007)
Yorck APE, Xiao T, Green MLH, Top. Catal., 22, 345 (2003)
Farrauto RJ, Hobson MC, Kennelly T, Waterman EM, Appl. Catal., 81, 227 (1992)
Irandoust S, Andersson B, Catal. Rev.-Sci. Eng., 30, 341 (1988)
Choudhary VR, Rane VH, Rajput AM, Catal. Lett., 22(4), 289 (1993)
Hu YH, Ruckenstein E, J. Catal., 158(1), 260 (1996)
Zhu TL, Flytzani-Stephanopoulos M, Appl. Catal. A: Gen., 208(1-2), 403 (2001)
Ashcroft AT, Cheethan AK, Foord JS, Green MLH, Grey CP, Murrel AJ, Vernon PDF, Nature, 344, 319 (1990)
Bhattacharya AK, Breach JA, Chand S, Ghorai DK, Hartridge A, Keary J, Mallick KK, Appl. Catal. A: Gen., 80, L1 (1992)
Boucouvalas Y, Zhang ZL, Verykios XE, Catal. Lett., 40(3-4), 189 (1996)
Rabe S, Truong TB, Vogel F, Appl. Catal. A: Gen., 318, 54 (2007)
Rostrup-Nielsen JR, Catal. Today, 63(2-4), 159 (2000)
Mouaddib N, Feumi-Jantou C, Garbowski E, Primet M, Appl. Catal. A: Gen., 87, 129 (1992)
Torniainen PM, Chu X, Schmidt LD, J. Catal., 146(1), 1 (1994)
Jung H, Yoon WL, Lee H, Park JS, Shin JS, La H, Lee JD, J. Power Sources, 124(1), 76 (2003)