Phenol In Situ Hydrogenation with Carbon Nanotube-Supported Pd Catalyst

Article Preview

Abstract:

Carbon nanotube (CNT) and activated carbon (AC)-supported Pd catalysts have been prepared by impregnation and reduction-precipitation method using chloropalladate acid as metal precursor. The catalytic performance for phenol in-situ hydrogenation was evaluated under 493 K, 3.5MPa. The results show that Pd/CNTs catalyst has higher selective for phenol in-situ hydrogenation to cyclohexanone. The catalysts have been characterised by CO-TPD and TEM. The mesoporosity structure and inner hollow cavities of Pd/CNTs catalyst are responsible for the distinguished properties.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

60-64

Citation:

Online since:

May 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Dodgson, I., Griffen, K., Barberis, G., etal. A Low Cost Phenol to Cyclohexanone Process. Chem. Ind. 1989, 830.

Google Scholar

[2] Zhou L P, Xu J, Miao H, etal. Appl. Catal. A, 2005, 292: 223.

Google Scholar

[3] G. Neri, A.M. Visco, A. Donato, etal. Hydrogenation of phenol to cyclohexanone over palladium and alkali-doped palladium catalysts, Appl. Catal. A-Gen. 110 (1994) 49–59.

DOI: 10.1016/0926-860x(94)80104-5

Google Scholar

[4] E. -J. Shin, M.A. Keane, Catalytic hydrogen treatment of aromatic alcohols, J. Catal. 173 (1998) 450–459.

Google Scholar

[5] N. Mahata, V. Vishwanathan, Gas phase hydrogenation of phenol over supported palladium catalyst, Catal. Today 49 (1999) 65–69.

DOI: 10.1016/s0920-5861(98)00409-x

Google Scholar

[6] S. Scir`e, S. Minic`o, C. Crisafulli, Selective hydrogenation of phenol to cyclohexanone over supported Pd and Pd-Ca catalysts: an investigation on the influence of different supports and Pd precursors, Appl. Catal. A-Gen. 325 (2002) 21-31.

DOI: 10.1016/s0926-860x(02)00237-5

Google Scholar

[7] J.R. Gonzalez Velasco, M.P. Gonzalez Marcos, S. Arnaiz, etal., Activity and selectivity of palladium catalysts during the liquid-phase hydrogenation of phenol. Influence of temperature and pressure, Ind. Eng. Chem. Res. 34 (1995) 1031–1036.

DOI: 10.1021/ie00043a004

Google Scholar

[8] Li X N, Xiang Y Zh, Sci China(Ser B), 2007, 37: 136.

Google Scholar

[9] K. Weissermel, H.J. Arpe, in: Industrial Organic Chemistry, 2nd edn., VHC, Weinheim, 1993, 251.

Google Scholar

[10] L. Calvo, M.A. Gilarranz, J.A. Casas, A.F. Mohedano, etal., Hydrodechlorination of 4-chlorophenol in aqueous phase using Pd/AC catalysts prepared with modified active carbon supports, Appl. Catal. B-Environ. 67 (2006) 68-76.

DOI: 10.1016/j.apcatb.2006.04.016

Google Scholar

[11] A.K. Talukdar, K.G. Bhattacharyya, Hydrogenation of phenol over supported platinum and palladium catalysts, Appl. Catal. A-Gen. 96 (1993) 229-239.

DOI: 10.1016/0926-860x(90)80012-4

Google Scholar

[12] T.T. Bovkun, Y. Sasson, J. Blum, Conversion of chlorophenols into cyclohexane by a recyclable Pd–Rh catalyst, J. Mol. Catal. A-Chem. 242 (2005) 68-73.

DOI: 10.1016/j.molcata.2005.08.023

Google Scholar

[13] E. J. Shin, M.A. Keane, Gas-phase hydrogenation/hydrogenolysis of phenol over supported nickel catalysts, Ind. Eng. Chem. Res. 39 (2000) 883-892.

DOI: 10.1021/ie990643r

Google Scholar

[14] Gurrath M., Kuretzky T., Boehm H.P., et al. Palladium catalysts on activated carbon supports: influence of reduction temperature, origin of the support and and pretreatments of the carbon surface [J]. Carbon, 2000, 38 (8): 1241-1255.

DOI: 10.1016/s0008-6223(00)00026-9

Google Scholar

[15] Kongkanand A. Vinodgopal K., Kuwabata S., et al. Highly Dispersed Pt Catalysts on Single Walled Carbon Nanotubes and Their Role in Methanol Oxidation[J]. J. Phys. Chem. B, 2006, 110(33): 16185-16188.

DOI: 10.1021/jp064054s

Google Scholar