Kinetic Study of Diesel Soot Combustion with Perovskite Catalysts
Kinetic Study of Diesel Soot Combustion with Perovskite Catalysts
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DOI：
10.1021/ie202155c
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发表时间：
2012-06
影响因子：
4.2
通讯作者：
S. Hérnandez;G. Blengini;N. Russo;D. Fino
中科院分区：
文献类型：
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作者：
S. Hérnandez;G. Blengini;N. Russo;D. Fino
采用差示扫描量热法（DSC）和热重分析法（TGA）对几种催化剂促进的碳烟燃烧动力学进行了研究。所有催化剂都是基于LaCrO3标准的亚化学计量或碱金属取代的钙钛矿（La0.9CrO3，La0.8CrO3，La0.9Rb0.1CrO3，La0.9Na0.1CrO3，La0.9K0.1CrO3，La0.8Cr0.9Li0.1O3），在我们小组进行的先前研究中发现其对该反应具有活性。采用不同的无模型等转化率法和DSC数据确定了反应的活化能。相反，采用热重数据来确定氧反应级数。
The objective of this paper is to analyze the kinetics of soot combustion, promoted by several catalysts, through differential scanning calorimetry (DSC) and thermogravimetic analysis (TGA). All the catalysts are substoichiometric or alkali-metal substituted perovskites (La0.9CrO3, La0.8CrO3, La0.9Rb0.1CrO3, La0.9Na0.1CrO3, La0.9K0.1CrO3, La0.8Cr0.9Li0.1O3) on the basis of the LaCrO3 standard, which was found to be active for this reaction in previous studies conducted by our group. Different model-free iso-conversion methods with the DSC data were used to determine the activation energies. Instead, thermogravimetric data were employed to determine the oxygen reaction order.