Korean Journal of Chemical Engineering, Vol.29, No.9, 1151-1157, September, 2012
CO oxidation over CuO catalysts prepared with different precipitants
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CuO catalysts, prepared by the precipitation method using different precipitants such as ammonium hydroxide, sodium hydroxide, sodium carbonate and sodium hydrogen carbonate were applied to CO oxidation. Among the catalysts studied, CuO synthesized with sodium hydrogen carbonate showed the highest activity for CO oxidation. With the water vapor present in the feed gas, the catalytic activity decreased considerably due to reduction in the number of active sites by competitive adsorption between water vapor and CO. The H2-TPR and CO-TPD results showed that existing Na+ cations and HCO3- and CO32- anions on the CuO surface could weaken the copper-oxygen bond strength and accelerate the mobility of oxygen on the surface or lattice. Finally, the morphology of the CuO crystals was dependent on the precipitants, and the introduction of Na+ cations and various anions resulted in the formation of smaller crystals.
- Royer S, Duprez D, Chem. Cat. Chem., 3, 24 (2011)
- Valdes-Solis T, Lopez I, Marban G, Int. J. Hydrog. Energy., 35, 1879 (2010)
- Luo MF, Zhong YJ, Yuan XX, Zheng XM, Appl. Catal. A: Gen., 162(1-2), 121 (1997)
- Fortunato G, Oswald HR, Reller A, J. Mater. Chem., 11, 905 (2001)
- Veprek S, Cocke DL, Kehl S, Oswald HR, J. Catal., 100, 250 (1986)
- Zhu PF, Li J, Zuo SF, Zhou RX, Appl. Surf. Sci., 255(5), 2903 (2008)
- Tanaka H, Kuriyama M, Ishida Y, Ito SI, Kubota T, Miyao T, Naito S, Tomishige K, Kunimori K, Appl. Catal. A: Gen., 343(1-2), 125 (2008)
- Minemura Y, Kuriyama M, Ito S, Tomishige K, Kunimori K, Catal. Commun., 7, 623 (2006)
- Mirkelamoglu B, Karakas G, Appl. Catal. A: Gen., 299, 84 (2006)
- Xue L, Zhang CB, He H, Teraoka Y, Catal. Today, 126(3-4), 449 (2007)
- Pasha N, Lingaiah N, Reddy PSS, Prasad PSS, Catal. Lett., 127(1-2), 101 (2009)
- Zhang C, Bai Y, Yin Y, Gu J, Sun Y, Korean J. Chem. Eng., 28(2), 602 (2011)
- http://en.wikipedia.org/wiki/Ionic_radius.
- Fernandez R. Estelle J, Cesteros Y, Salagre P, Medina F, Sueiras J, Fierro JG, J. Mol. Catal. A: Chem., 119, 77 (1997)
- Ohnishi C, Asano K, Iwamoto S, Chikama K, Inoue M, Catal. Today, 120(2), 145 (2007)
- Holgado JP, Munuera G, Espinos JP, Gonzalez-Elipe AR, Appl. Surf. Sci., 158(1-2), 164 (2000)
- Park WJ, Jeong HJ, Yoon WL, Kim CS, Lee DK, Park YK, Rhee YW, Int. J. Hydrog. Energy., 30, 209 (2005)
- Avgouropoulos G, Ioannides T, Matralis H, Appl. Catal. B: Environ., 56(1-2), 87 (2005)
- Luo MF, Ma JM, Lu JQ, Song YP, Wang YJ, J. Catal., 246(1), 52 (2007)
- Dow WP, Wang YP, Huang TJ, J. Catal., 160(2), 155 (1996)
- Wu Z, Zhu H, Qin Z, Wang H, Ding J, Huang L, Wang J, Fuel., http://dx.doi.org/10.1016/j.fuel.2010.03.001.
- Ramesh K, Chen LW, Chen FX, Liu Y, Wang Z, Han YF, Catal. Today, 131(1-4), 477 (2008)
- Morgan K, Cole KJ, Goguet A, Hardacre C, Hutchings GJ, Maguire N, Shekhtman SO, Taylor SH, J. Catal., 276(1), 38 (2010)
- Hasegawa Y, Fukumoto K, Ishima T, Yamamoto H, Sano M, Miyake T, Appl. Catal. B: Environ., 89(3-4), 420 (2009)
- Gurbani A, Ayastuy JL. Gonzalez-Marcos MP, Gutierrez-Ortiz MA, Int. J. Hydrog. Energy., 35, 11582 (2010)
- Cho KH, Park JH, Shin CH, Clean Technol., 16(2), 132 (2010)
- Lianjun L, Qiang Y, Jie Z, Haiqin W, Keqin S, Bin L, Haiyang Z, Fei G, Lin D, Chen X, J. Colloid Interf. Sci., 195, 236 (2002)
- Lei L. Li S, Haidong W, Chongqi C, Yusheng S, Yingying Z, Xingyi I, Qi Z, Int. J. Hydrog. Energy., 36, 8839 (2011)