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Pyrolysis of PU/CFCs wastes

机译:PU / CFCs废物的热解

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In the TGA experiments, the activation energy (25-30 kcal mol~-1) and preexponential constant (1n A = 34.6 h~-1) of the pyrolysis of PU / CFCs wastes were obtained. At least three discrete features at 328, 423, and 443 K are observed corresponding to desorption of CFC-14 1b from external, internal, and crosslink of the PU matrix, respectively. I indicates that pyrolysis of the PU polymer (at elevated temperatures) may not be effected by the presence of CFCs. In a single pass through the heated sodium oxalate bed (573 K) caused a nearly complete mineraliza- tion of CFC-141b.
机译:在TGA实验中,获得了PU / CFCs废物热解的活化能(25-30 kcal mol〜-1)和指数前常数(1n A = 34.6 h〜-1)。分别在328、423和443 K处观察到至少三个离散的特征,分别对应于CFC-14 1b从PU基质的外部,内部和交联脱附。 I表明PU聚合物的热解(在升高的温度下)可能不受CFC的存在影响。单次通过加热的草酸钠床(573 K),几乎使CFC-141b矿化。

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