The non-isothermal kinetics of CdO nanoparticles prepared from CdCO3 precursor using thermal decomposition method was investigated. A model-fitting Malek approach and a model-free advanced isoconversional method of Vy...The non-isothermal kinetics of CdO nanoparticles prepared from CdCO3 precursor using thermal decomposition method was investigated. A model-fitting Malek approach and a model-free advanced isoconversional method of Vyazovkin were applied to the analysis of the DSC and TGA data. The results showed that CdO nanoparticles prepared from CdCO3 followed an autocatalytic reaction. Sestak–Berggren model could favorably describe the studied reaction process. Moreover, the apparent activation energy of CdCO3 decomposition was calculated to be (119.19±9.97) kJ/mol and the explicit rate equation form of CdCO3 decomposition was established.展开更多
通过等转换率法并结合有机挥发物测试,对室温下特定时间后聚氨酯泡沫降解生成的醛酮有机物挥发量成功预测,得到反应级数n的均值及各个降解转化率下指前因子A及活化能E。结果表明:醛酮有机物挥发量占聚氨酯泡沫(PUF)总挥发量的4.48%。PUF...通过等转换率法并结合有机挥发物测试,对室温下特定时间后聚氨酯泡沫降解生成的醛酮有机物挥发量成功预测,得到反应级数n的均值及各个降解转化率下指前因子A及活化能E。结果表明:醛酮有机物挥发量占聚氨酯泡沫(PUF)总挥发量的4.48%。PUF在30℃下使用15年后,其有机挥发物(VOC)释放量占其质量的0.772%;而每1 kg PUF在30℃下使用15年后,其释放的醛酮挥发物物质的量可达到6.64 mmol。展开更多
文摘The non-isothermal kinetics of CdO nanoparticles prepared from CdCO3 precursor using thermal decomposition method was investigated. A model-fitting Malek approach and a model-free advanced isoconversional method of Vyazovkin were applied to the analysis of the DSC and TGA data. The results showed that CdO nanoparticles prepared from CdCO3 followed an autocatalytic reaction. Sestak–Berggren model could favorably describe the studied reaction process. Moreover, the apparent activation energy of CdCO3 decomposition was calculated to be (119.19±9.97) kJ/mol and the explicit rate equation form of CdCO3 decomposition was established.
文摘通过等转换率法并结合有机挥发物测试,对室温下特定时间后聚氨酯泡沫降解生成的醛酮有机物挥发量成功预测,得到反应级数n的均值及各个降解转化率下指前因子A及活化能E。结果表明:醛酮有机物挥发量占聚氨酯泡沫(PUF)总挥发量的4.48%。PUF在30℃下使用15年后,其有机挥发物(VOC)释放量占其质量的0.772%;而每1 kg PUF在30℃下使用15年后,其释放的醛酮挥发物物质的量可达到6.64 mmol。
