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- W2050585532 abstract "The decomposition of CH2FCF3 over some phosphate catalysts was studied. CH2FCF3 began to react at 250, 300, and 450 °C over Zr3(PO4)4, AlPO4, and BPO4, respectively, and the conversion reached 100% at 475, 500, and 700 °C, respectively. The primary reaction over Zr3(PO4)4 was estimated to be CH2FCF3 + H2O + 1/2O2 → 2CO + 4HF, whereas the reactions over AlPO4 and BPO4 were CH2FCF3 + H2O + O2 → CO + CO2 + 4HF and CO + 1/2O2 → CO2. Complete decomposition requires both hydrolysis and oxidation. The oxidation activities of these phosphate catalysts are not high enough to accomplish complete decomposition. However, AlPO4-based catalysts can be combined with each Co3O4, Mn2O3, CuO, and Cr2O3 at a phosphate content of 1/10 by volume to make them sustainable at 550−550 °C. The addition of Ce to AlPO4 brought about a promotion effect in CH2FCF3 decomposition similar to that for CCl2F2 decomposition. This might suggest a similarity in the reaction mechanism. The primary reaction in the absence of oxygen was estimated to be CH2FCF3 + H2O → CO + C + 4HF." @default.
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- W2050585532 date "2002-04-17" @default.
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- W2050585532 title "Decomposition of CH<sub>2</sub>FCF<sub>3</sub> (134a) over Metal Phosphate Catalysts" @default.
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- W2050585532 doi "https://doi.org/10.1021/ie0106229" @default.
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