Catalytic combustion of soot over Cu-Mg/Al composite oxides
文献类型：期刊论文
| 作者 | Yu, JJ; Jiang, Z; Kang, SF; Hao, ZP |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2004 |
| 卷号 | 20期号:12页码:1459-1464 |
| 关键词 | hydrotalcite precursors composite oxides diesel exhaust soot catalytic combustion |
| 英文摘要 | Keeping the atomic ratio of n(M2+)/n(M3+) at 3, series of CuMgAl-O oxides (w(CuO) = 0%, 5%, 10%, 15%, 20%, 30%, 40%, denoted as (0, 5, 10, 15, 20, 30, 40) CMAO respectively) were derived from calcination of Cu substituted Mg/Al-mixed anionic clay precursors (CuMgAl-hydrotalites, CMA-HTs), which were synthesized by co-precipitation methods. XRD, TG-DSC, TPR and FT-IR were used to study the influences of the Cu, Mg content upon the properties of precursors and prepared catalysts. Mg could improve thermal stability of catalysts in some degree. With the increase of Cu content, the surface area of catalysts decreased. However, the surface area was not an important factor in soot catalytic combustion. Activity tests showed the calcination affected the activity of CMAO catalysts significantly, and that 15CMAO-800 was the optimal catalyst for soot catalytic combustion and the T-10 and T-50 were 336 degreesC and 409 degreesC respectively. Moreover, complete structures of hydrotalcite precursors could be formed when w(CuO)less than or equal to30%. However, Cu(OH)(2) phase appeared when w(CuO)=40%. When w(CuO)<20%, homogeneous composite oxides could be obtained by calcination at 800 degreesC, but CuO phase was isolated when w(CuO)greater than or equal to20%. TG-DTA and FT-IR showed that the content of Cu, Mg had significant influences on the thermal decomposition characteristics of CuMgAl-Hydrotalcites. TPR results showed that the reduction ability of catalysts was determined by the calcination and composition. |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000226047700012 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23496]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Yu, JJ,Jiang, Z,Kang, SF,et al. Catalytic combustion of soot over Cu-Mg/Al composite oxides[J]. ACTA PHYSICO-CHIMICA SINICA,2004,20(12):1459-1464. |
| APA | Yu, JJ,Jiang, Z,Kang, SF,&Hao, ZP.(2004).Catalytic combustion of soot over Cu-Mg/Al composite oxides.ACTA PHYSICO-CHIMICA SINICA,20(12),1459-1464. |
| MLA | Yu, JJ,et al."Catalytic combustion of soot over Cu-Mg/Al composite oxides".ACTA PHYSICO-CHIMICA SINICA 20.12(2004):1459-1464. |
入库方式： OAI收割
来源：生态环境研究中心
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