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Received June 1, 2011
Accepted July 5, 2011
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Performance of Ni-added Pd-Ag/Al2O3 catalysts in the selective hydrogenation of acetylene
School of Chemical & Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea 1Division of Energy and Biological Engineering, Kyungwon University, Gyeonggi-do 461-701, Korea
shmoon@surf.snu.ac.kr
Korean Journal of Chemical Engineering, February 2012, 29(2), 169-172(4), 10.1007/s11814-011-0170-x
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Abstract
Effects of Ni addition on the performance of Pd-Ag/Al2O3 catalysts in the selective hydrogenation of acetylene were investigated. Ni-added Pd-Ag catalysts showed higher conversions than Ni-free Pd-Ag catalyst under hydrogen-deficient reaction conditions, hydrogen/acetylene <2.0, due to the spillover of hydrogen from reduced Ni to Pd and the suppression of hydrogen penetration into the Pd bulk phase, which enriched the Pd surface with hydrogen. Ethylene selectivity was also increased by Ni addition because the amounts of surface hydrogen originating from the_x000D_
Pd bulk phase, which was responsible for the full hydrogenation of ethylene to ethane, were decreased due to the presence of Ni at the sub-surface of Pd-Ag particles. Added Ni also modified the geometric nature of the Pd surface by blocking large ensembles of Pd into isolated ones, which eventually improved ethylene selectivity.
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References
Sarkany A, Beck A, Horvath A, Revay Z, Guczi L, Appl. Catal. A: Gen., 253(1), 283 (2003)
Molnar A, Sarkany A, Varga M, J. Mol. Catal. A-Chem., 173(1-2), 185 (2001)
Pradier CM, Mazina M, Berthier Y, Oudar J, J. Mol. Catal., 89, 211 (1994)
Mei DH, Neurock M, Smith CM, J. Catal., 268(2), 181 (2009)
Zea H, Lester K, Datye AK, Rightor E, Gulotty R, Waterman W, Smith M, Appl. Catal. A: Gen., 282(1-2), 237 (2005)
Leviness S, Nair V, Weiss AH, Schay Z, Guczi L, J. Mol.Catal., 25, 131 (1984)
Wongwaranon N, Mekasuwandumrong O, Praserthdam P, Panpranot J, Catal. Today, 131(1-4), 553 (2008)
Panpranot J, Kontapakdee K, Praserthdam P, Appl. Catal. A: Gen., 314(1), 128 (2006)
Kim WJ, Shin EW, Kang JH, Moon SH, Appl. Catal. A: Gen., 251(2), 305 (2003)
Praserthdam P, Ngamsom B, Bogdanchikova N, Phatanasri S, Pramotthana M, Appl. Catal. A: Gen., 230(1-2), 41 (2002)
Zhang QW, Li J, Liu XX, Zhu QM, Appl. Catal. A: Gen., 197(2), 221 (2000)
Miegge P, Rousset JL, Tardy B, Massardier J, Bertolini JC, J. Catal., 149(2), 404 (1994)
Khanra BC, Menon M, Chem. Phys. Lett., 305, 89 (1999)
Bozzolo G, Noebe RD, Khalil J, Morse J, Appl. Surf. Sci., 219(1-2), 149 (2003)
Valcarcel A, Morfin F, Piccolo L, J. Catal., 263(2), 315 (2009)
Moon SH, Windawi H, Katzer JR, Ind. Eng. Chem. Fundam., 20, 396 (1981)
Kim WJ, Choi CH, Moon SH, Korean J. Chem. Eng., 19(4), 617 (2002)
Jin YM, Datye AK, Rightor E, Gulotty R, Waterman W, Smith M, Holbrook M, Maj J, Blackson J, J. Catal., 203(2), 292 (2001)
Primet M, Mathieu MV, Sachtler WMH, J. Catal., 44, 324 (1976)
Tanksale A, Beltramini JN, Dumesic JA, Lu GQ, J. Catal., 258(2), 366 (2008)
Kim JP, Korean J. Chem. Eng., 21(2), 385 (2004)
Conrad H, Ertl G, Latta EE, Sur. Sci., 41, 435 (1974)
Gdowski GE, Felter TE, Stulen RH, Sur. Sci., 181, L147 (1987)
Lamb RN, Ngamsom B, Trimm DL, Gong B, Silveston PL, Praserthdam P, Appl. Catal. A: Gen., 268(1-2), 43 (2004)
Yamamoto Y, Nawa N, Nishimoto S, Kameshima Y, Matsuda M, Miyake M, Int. J Hydrog. Energy., 36, 5739 (2011)
Techner SJ, Mazabrard AR, Pajonk G, Gardes GEE, Hoang-Van C, J. Colloid Int. Sci., 58, 88 (1977)
Borodzinki A, Catal. Rev.-Sci. Eng., 48(2), 91 (2006)
Ge Q, Neurock M, Chem. Phys. Lett., 358(5-6), 377 (2002)
Molnar A, Sarkany A, Varga M, J. Mol. Catal. A-Chem., 173(1-2), 185 (2001)
Pradier CM, Mazina M, Berthier Y, Oudar J, J. Mol. Catal., 89, 211 (1994)
Mei DH, Neurock M, Smith CM, J. Catal., 268(2), 181 (2009)
Zea H, Lester K, Datye AK, Rightor E, Gulotty R, Waterman W, Smith M, Appl. Catal. A: Gen., 282(1-2), 237 (2005)
Leviness S, Nair V, Weiss AH, Schay Z, Guczi L, J. Mol.Catal., 25, 131 (1984)
Wongwaranon N, Mekasuwandumrong O, Praserthdam P, Panpranot J, Catal. Today, 131(1-4), 553 (2008)
Panpranot J, Kontapakdee K, Praserthdam P, Appl. Catal. A: Gen., 314(1), 128 (2006)
Kim WJ, Shin EW, Kang JH, Moon SH, Appl. Catal. A: Gen., 251(2), 305 (2003)
Praserthdam P, Ngamsom B, Bogdanchikova N, Phatanasri S, Pramotthana M, Appl. Catal. A: Gen., 230(1-2), 41 (2002)
Zhang QW, Li J, Liu XX, Zhu QM, Appl. Catal. A: Gen., 197(2), 221 (2000)
Miegge P, Rousset JL, Tardy B, Massardier J, Bertolini JC, J. Catal., 149(2), 404 (1994)
Khanra BC, Menon M, Chem. Phys. Lett., 305, 89 (1999)
Bozzolo G, Noebe RD, Khalil J, Morse J, Appl. Surf. Sci., 219(1-2), 149 (2003)
Valcarcel A, Morfin F, Piccolo L, J. Catal., 263(2), 315 (2009)
Moon SH, Windawi H, Katzer JR, Ind. Eng. Chem. Fundam., 20, 396 (1981)
Kim WJ, Choi CH, Moon SH, Korean J. Chem. Eng., 19(4), 617 (2002)
Jin YM, Datye AK, Rightor E, Gulotty R, Waterman W, Smith M, Holbrook M, Maj J, Blackson J, J. Catal., 203(2), 292 (2001)
Primet M, Mathieu MV, Sachtler WMH, J. Catal., 44, 324 (1976)
Tanksale A, Beltramini JN, Dumesic JA, Lu GQ, J. Catal., 258(2), 366 (2008)
Kim JP, Korean J. Chem. Eng., 21(2), 385 (2004)
Conrad H, Ertl G, Latta EE, Sur. Sci., 41, 435 (1974)
Gdowski GE, Felter TE, Stulen RH, Sur. Sci., 181, L147 (1987)
Lamb RN, Ngamsom B, Trimm DL, Gong B, Silveston PL, Praserthdam P, Appl. Catal. A: Gen., 268(1-2), 43 (2004)
Yamamoto Y, Nawa N, Nishimoto S, Kameshima Y, Matsuda M, Miyake M, Int. J Hydrog. Energy., 36, 5739 (2011)
Techner SJ, Mazabrard AR, Pajonk G, Gardes GEE, Hoang-Van C, J. Colloid Int. Sci., 58, 88 (1977)
Borodzinki A, Catal. Rev.-Sci. Eng., 48(2), 91 (2006)
Ge Q, Neurock M, Chem. Phys. Lett., 358(5-6), 377 (2002)
