Catalytic Decomposition of CCl2F2 over Solid Base Na2O/ZrO2

Tian Cheng Liu; Ping Ning; Hong Bin Wang; Lin Zhuan Ma; Bin Li

doi:10.4028/www.scientific.net/AMR.634-638.494

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Catalytic Decomposition of CCl2F2 over Solid Base...

Catalytic Decomposition of CCl₂F₂ over Solid Base Na₂O/ZrO₂

Abstract:

Catalytic decomposition of dichlorodifluoromethane (CCl2F2) in the presence of water vapor and oxygen was studied over a series of solid base that have different ZrO2 content using a fixed-bed reactor. CO2 and CClF3 were the main-products and no CO was detected as by-product. The decomposition activity depended on the calcination temperature and the Zr:Na. Calcined at 600 °C and Zr:Na=1:0.35 were the best catalyst preparation conditions. Adopting low concentration of oxygen and CCl2F2 and high concentration of water vapor is preferable to the achievement of high conversion of CCl2F2 and selectivity for CO2. The catalytic activity of Na2O/ZrO2 remained steady for 120 h on stream.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

494-499

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.494

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Online since:

January 2013

Authors:

Tian Cheng Liu, Ping Ning, Hong Bin Wang, Lin Zhuan Ma, Bin Li

Keywords:

Catalytic Decomposition, Dichlorodifluoromethane (CCl₂F₂), Na₂O/ZrO₂, Solid Base

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