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

Byoung Sung Ahn; Sang Goo Jeon; Hyunjoo Lee; Kun You Park; Yong Gun Shul

doi:10.1016/S0926-860X(99)00427-5

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

Byoung Sung Ahn, Sang Goo Jeon, Hyunjoo Lee, Kun You Park, Yong Gun Shul

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The hydrogenolysis of CF₂Cl₂ (CFC-12) has been studied in the gas phase over Pd (3 wt.%)/γ-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 the structure and the composition of Pd/Al₂O₃.

Original language	English
Pages (from-to)	87-93
Number of pages	7
Journal	Applied Catalysis A: General
Volume	193
Issue number	1-2
DOIs	https://doi.org/10.1016/S0926-860X(99)00427-5
Publication status	Published - 2000 Feb 28

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology

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title = "Hydrogenolysis of CFC-12 (CF2Cl2) over Pd/γ-Al2O3 pretreated with HCFC-22 (CHF2Cl)",

abstract = "The hydrogenolysis of CF2Cl2 (CFC-12) has been studied in the gas phase over Pd (3 wt.%)/γ-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 the structure and the composition of Pd/Al2O3.",

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T1 - Hydrogenolysis of CFC-12 (CF2Cl2) over Pd/γ-Al2O3 pretreated with HCFC-22 (CHF2Cl)

AU - Ahn, Byoung Sung

AU - Jeon, Sang Goo

AU - Lee, Hyunjoo

AU - Park, Kun You

AU - Shul, Yong Gun

PY - 2000/2/28

Y1 - 2000/2/28

N2 - The hydrogenolysis of CF2Cl2 (CFC-12) has been studied in the gas phase over Pd (3 wt.%)/γ-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 the structure and the composition of Pd/Al2O3.

AB - The hydrogenolysis of CF2Cl2 (CFC-12) has been studied in the gas phase over Pd (3 wt.%)/γ-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 the structure and the composition of Pd/Al2O3.

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