Journal of Industrial and Engineering Chemistry, Vol.6, No.5, 305-311, September, 2000
Hydrogenolysis of HCFC-142b over Supported Palladium Catalyst
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1 1-Difluoroethane (HFC-152a), 1,1,1-trifluoroethane (HFC-143a), and ethane were mainly produced through the hydrogenolysis of 1-chlro-1,1-difluoroethane (HCFC-142b) over palladium on activated carbon (Pd/C) catalysts. Several types of activated carbon and various methods for the pretreatment of the support were used for impregnating the palladium. Depending on the method of pretreating the activated carbon with base and/or acid, the catalyst activity showed the following trend; 0.5 M NaOH and 0.5 M HCl>0.5 M HCl>0.5 M HNO3>0.5 M HF>non-pretreated carbon. The granular-type catalyst exhibited the highest conversion and selectivity to HFC-152a.
- Molina MJ, Rowland FS, Nature, 249, 810 (1974)
- Hwang SH, Korean J. Air-cond. Refri. Eng., 25, 5 (1996)
- Coq B, Cognion JM, Figueras F, Tournigant D, J. Catal., 141, 21 (1993)
- Vandesandt EJ, Wiersma A, Makkee M, Vanbekkum H, Moulijn JA, Catal. Today, 35(1-2), 163 (1997)
- Wiersma A, van de Sandt EJAX, den Hollander MA, van Bekkum H, Makkee M, Moulijn JA, J. Catal., 177(1), 29 (1998)
- Sohn JR, Park EH, J. Ind. Eng. Chem., 4(3), 197 (1998)
- Brigitte S, Boehm HP, Carbon, 29, 707 (1991)
- Krishnankutty N, Vannice MA, J. Catal., 155(2), 312 (1995)
- Cameron DS, Cooper SJ, Dodgson IL, Harrison B, Jenkins JW, Catal. Today, 7, 113 (1990)
- Heal GR, Mkayula LL, Carbon, 26, 815 (1988)
- Wiersma A, Vandesandt EJ, Makkee M, Luteijn CP, Vanbekkum H, Moulijn JA, Catal. Today, 27(1-2), 257 (1996)
- Rao VNM, U.S. Patent, 5,136,113 (1992)
- Thomson J, Webb G, Winfield J, Bonniface D, Shortman C, Winterton N, Appl. Catal. A: Gen., 97, 67 (1993)
- Makkee M, van de Sandt EJAX, Wiersma A, Moulijn JA, J. Mol. Catal. A-Chem., 134, 191 (1998)
- van de Sandt EJAX, Wiersma A, Makkee M, van Bekkum H, Moulijn JA, Appl. Catal. A: Gen., 173(2), 161 (1998)