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Korean Journal of Chemical Engineering, Vol.25, No.6, 1309-1315, 2008
Partial oxidation of n-butane over ceria-promoted nickel/calcium hydroxyapatite
LPG has good infrastructure and is anticipated to be used for production of hydrogen, and n-butane which constitutes a main component of LPG for vehicles. Partial oxidation (POX) of n-butane is investigated in this research by employing ceria-promoted Ni/calcium hydroxyapatite catalysts (CexNi2.5/Ca10(OH)2(PO4)6 x=0.1-0.3) which have recently been reported to exhibit good catalytic performance in POX of methane and propane. The experiments were carried out with changing ceria content, O2/n-C4H10 ratio and reaction temperature. As the O2/n-C4H10 ratio increased up to 2.75, the n-C4H10 conversion and H2 yield increased and the selectivity of methane and other hydrocarbons decreased. But with O2/n-C4H10=3.0, the n-C4H10 conversion and H2 yield decreased. Ce0.1Ni2.5/Ca10(OH)2(PO4)6 showed the highest n-C4H10 conversion and H2 yield on the whole. In durability tests, higher hydrogen yield and better catalyst stability were obtained with the O2/n-C4H10 ratio of 2.75 than with the ratio of 2.5.
[References]
- Laosiripojana N, Assabumrungrat S, J. Power Sources, 158(2), 1348, 2006
- Nagaoka K, Sato K, Nishiguchi H, Takita Y, Appl. Catal. A: Gen., 327(2), 139, 2007
- Loffler DG, Taylor K, Mason D, J. Power Sources, 117(1-2), 84, 2003
- Lee SY, Kwak JH, Kim MS, Nam SW, Lim TH, Hong SA, Yoon KJ, Korean J. Chem. Eng., 24(2), 226, 2007
- Jun JH, Lee SJ, Lee SH, Lee TJ, Kong SJ, Lim TH, Nam SW, Hong SA, Yoon KJ, Korean J. Chem. Eng., 20(5), 829, 2003
- Kim KH, Lee SY, Yoon KJ, Korean J. Chem. Eng., 23(3), 356, 2006
- Kim KH, Lee SY, Nam SW, Lim TH, Hong SA, Yoon KJ, Korean J. Chem. Eng., 23(1), 17, 2006
- Avci AK, Trimm DL, Aksoylu AE, Onsan ZI, Appl. Catal. A: Gen., 258(2), 235, 2004
- Moon DJ, Ryu JW, Lee SD, Ahn BS, Korean J. Chem. Eng., 19(6), 921, 2002
- Jun JH, Jeong KS, Lee TJ, Kong SJ, Lim TH, Nam SW, Hong SA, Yoon KJ, Korean J. Chem. Eng., 21(1), 140, 2004
- Shin BS, Bae JH, Yoo JP, Choung SJ, Song YI, Yeo GK, Korean J. Chem. Eng., 14, 474, 1998
- Mattos LV, de Oliveira ER, Resende PD, Noronha FB, Passos FB, Catal. Today, 77(3), 245, 2002
- Mattos LV, Noronha E, J. Catal., 233(2), 453, 2005
- Jun JH, Lee TJ, Lim TH, Nam SW, Hong SA, Yoon KJ, J. Catal., 221(1), 178, 2004
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