Korean Journal of Chemical Engineering, Vol.30, No.4, 860-863, 2013
Effect of CeO2 on CO removal over CeO2-modified Ni catalyst in CO-rich syngas
A CeO2-modified Ni catalyst has been studied as a substitute for Ni bulk catalyst in a CO removal reaction using various characterization methods. CO removal was enhanced slightly and presented at lower reaction temperatures following promotion of CeO2 on Ni. The enhanced ability to reduce CO was mainly a result of methanation rather than WGS during a CO removal reaction. Based on X-ray diffraction and temperature-programmed reduction, CeO2 appeared to change the Ni surface properties. Because the bond strength between C and O atoms in CO was weakened by the surface oxygen of CeO2 on Ni, the CeO2-promoted Ni catalyst showed higher CO conversion and lower selectivity to WGS than Ni bulk catalyst.
[References]
Kim KY, Han J, Nam SW, Lim TH, Lee HI, Catal. Today , 131 (1-4), 431, 2008
Sohn JM, Byun YC, Cho JY, Choe J, Song KH, Int. J.Hydrog. Energy. , 32 , 5103, 2007
Seo HJ, Yu EY, J. Ind. Eng. Chem. , 3 (2), 85, 1997
Rhodes C, Hutchings GJ, Ward AM, Catal. Today , 23 (1), 43, 1995
Jacobs G, Davis BH, Appl. Catal. A: Gen. , 333 (2), 192, 2007
Jung CR, Kundu A, Nam SW, Lee HI, Appl. Catal. A: Gen. , 331 , 112, 2007
Rhodes C, Williams BP, King F, Hutchings GJ, Catal. Commun. , 3 , 381, 2002
Kokkofitis C, Karagiannakis G, Stoukides M, Catal. Today , 127 (1-4), 330, 2007
Idakiev V, Tabakova T, Tenchev K, Yuan ZY, Ren TZ, Su BL, Catal. Today , 128 (3-4), 223, 2007
Rama Rao KS, Jun KW, Shen WJ, Lee KW, J. Ind. Eng. Chem. , 6 (5), 287, 2000
Kim SH, Nam SW, Lim TH, Lee HI, Appl. Catal. B: Environ. , 81 (1-2), 97, 2008
Semelsberger TA, Borup RL, Int. J. Hydrog. Energy. , 30 , 425, 2005
Choi JS, Yun JS, Kwon HH, Lim TH, Hong SA, Lee HI, J. Power Sources , 145 (2), 652, 2005
Habazaki H, Yamasaki M, Zhang BP, Kawashima A, Kohno S, Takai T, Hashimoto K, Appl. Catal. A: Gen. , 172 (1), 131, 1998
Kusar H, Hocevar S, Levec J, Appl. Catal. B: Environ. , 63 (3-4), 194, 2006
Azzam KG, Babich IV, Seshan K, Lefferts L, J. Catal. , 251 (1), 153, 2007
Denkwitz Y, Karpenko A, Plzak V, Leppelt R, Schumacher B, Behm RJ, J. Catal. , 246 (1), 74, 2007
Mendelovici L, Steinberg M, J. Catal. , 96 , 285, 1985
Widmann D, Leppelt R, Behm RJ, J. Catal. , 251 (2), 437, 2007
Laosiripojana N, Assabumrungrat S, Appl. Catal. B: Environ. , 60 (1-2), 107, 2005
Park NC, Kim YC, Kim DJ, Korean Chem. Eng. Res. , 36 (2), 139, 1998
Kim SH, Chung JH, Kim YT, Han J, Yoon SP, Nam SW, Lim TH, Lee HI, Catal. Today. , 146 , 96, 2009
Choi Y, Stenger HG, J. Power Sources , 124 (2), 432, 2003
Shan WJ, Luo MF, Ying PL, Shen WJ, Li C, Appl. Catal. A: Gen. , 246 (1), 1, 2003
Xu S, Yan XB, Wang XL, Fuel , 85 (14-15), 2243, 2006
Jacobs G, Patterson PM, Williams L, Chenu E, Sparks D, Thomas G, Davis BH, Appl. Catal. A: Gen. , 262 (2), 177, 2004
Zheng WQ, Zhang J, Ge QJ, Xu HY, Li WZ, Appl. Catal. B: Environ. , 80 (1-2), 98, 2008
Xavier KO, Sreekala R, Rashid KKA, Yusuff KKM, Sen B, Catal. Today , 49 (1-3), 17, 1999
Bajusz IG, Goodwin JG, J. Catal. , 169 (1), 157, 1997
Sehested J, Dahl S, Jacobsen J, Rostrup-Nielsen JR, J. Phys. Chem. B , 109 (6), 2432, 2005
Henderson MA, Perkins CL, Engelhard MH, Thevuthasan S, Peden CHF, Surf. Sci. , 526 , 1, 2003
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