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Hydrogenolysis of CFC-12 (CF2Cl2) over Pd/gamma-Al2O3 pretreated with HCFC-22 (CHF2Cl)

Authors
Ahn, BS; Jeon, SG; Lee, H; Park, KY; Shul, YG
Issue Date
2000-02-28
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED CATALYSIS A-GENERAL, v.193, no.1-2, pp.87 - 93
Abstract
The hydrogenolysis of CF2Cl2 (CFC-12) has been studied in the gas phase over Pd (3 wt%)/gamma-Al2O3 Pretreatment of the catalyst with CHF2Cl (HCFC-22) was found to significantly improve the catalytic activity and the catalyst lifetime. The formation of Pd-carbide was observed in the CHF2Cl-treated catalyst, and the presence of the palladium carbide is thought to enhance the selectivity to the CH2F2 and to prevent sintering of palladium. XRD, TEM and XPS were used to characterize he structure and the composition of Pd/Al2O3. (C) 2000 Elsevier Science B.V. All rights reserved.
Keywords
CCL2F2 CFC-12; CH2F2 HFC-32; SELECTIVE HYDROGENOLYSIS; ACTIVATED CARBON; PALLADIUM; DECOMPOSITION; HYDROGENATION; CATALYSTS; ACETYLENE; PHASE; CCL2F2 CFC-12; CH2F2 HFC-32; SELECTIVE HYDROGENOLYSIS; ACTIVATED CARBON; PALLADIUM; DECOMPOSITION; HYDROGENATION; CATALYSTS; ACETYLENE; PHASE; hydrogenolysis; palladium carbide; Pd/gamma-Al2O3; CFC-12; HCFC-22; HFC-32
ISSN
0926-860X
URI
https://pubs.kist.re.kr/handle/201004/141569
DOI
10.1016/S0926-860X(99)00427-5
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KIST Article > 2000
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