| 催化剂对汽车发动机烟灰燃烧性能的影响 |
| 摘要点击 608 全文点击 764 投稿时间：1995-06-22 |
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| 中文关键词 烟灰燃烧 催化剂 TG-DTA技术 |
| 英文关键词 soot combustion catalysts TG-DTA method |
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| 中文摘要 |
| 将汽车排气管中收集到的烟灰与不同催化剂混合组成于混试样。利用TG-DTA技术,考察了不同催化剂对烟灰的助燃作用。发现催化剂存在时烟灰的燃烧特征温度Tmax有较大程度的降低。催化剂的助燃活性:NiO/Al2O3MCuO/Al2O3>V2O5/Al2O3>Pd/Al2O3>Ag2O>Al2O3>Cr2O3/Al2O3>CeO2/Al2O3,与金属氧化物的生成焓(-△H)有一定对应关系,随着-△H的增加,烟灰燃烧的Tmax出现一个最低值。 |
| 英文摘要 |
| In this paper,the soot collected from automobile exhaust pipe was mixed with different catalysts to form dry samples. TG-DTA method was applied to investigate the combustion-support lug performance of different catalysts. It has been found that the dust combustion temperature Tmax was greatly lowered when catalysts were used. The combustion supponing performance of catalysts was ordered as following: NiO/Al2O3 > CuO/Al2O3 >V2O5/Al2O3 >Pd /Al2O3,>Ag2O/Al2O3 >Cr2O3/Al2O3>CeO2/Al2O3 and had a certain correlation to the -△H of metal oxide. With the increasing of -△H,a minimum Tmax can be observed. |
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