Synergy between Ag nanoparticles and yttria-stabilized zirconia for soot oxidation

Synergy between Ag nanoparticles and yttria-stabilized zirconia for soot oxidation
复制标题

DOI：
10.1016/j.apcatb.2018.09.069
复制
发表时间：
2019-03
期刊：
Applied Catalysis B: Environmental
影响因子：
--
通讯作者：
A. Serve;A. Boréave;B. Cartoixa;K. Pajot;P. Vernoux
A. Serve;A. Boréave;B. Cartoixa;K. Pajot;P. Vernoux
中科院分区：
其他
文献类型：
--
作者：
A. Serve;A. Boréave;B. Cartoixa;K. Pajot;P. Vernoux

文献摘要

被引文献

相似文献

本研究探讨了银纳米粒子和氧化钇稳定的氧化锆（YSZ），氧离子导电载体，开发一种有效的和稳定的催化剂，柴油机微粒过滤器再生只有氧气之间的潜在协同作用。通过程序升温氧化实验和同位素实验对催化剂的催化性能和碳烟燃烧机理进行了深入分析。我们发现，Ag/YSZ催化剂达到最高的活性为低含量的银，即2wt%。同位素实验证明活性氧物种来源于YSZ晶格。显示银通过激活可补充YSZ载体的氧的解离吸附来促进烟灰氧化活性。
This study investigates a potential synergy between Ag nanoparticles and Yttria-Stabilized Zirconia (YSZ), an oxygen ionically conducting support, for developing an efficient and stable catalyst for Diesel Particulate Filter regeneration only with oxygen. The catalytic performances as well as the mechanism for soot combustion were thoroughly analyzed through Temperature-Programmed Oxidation and isotopic experiments. We found that Ag/YSZ catalysts reach the highest activity for low contents of Ag, i.e. 2 wt%. Isotopic experiments were carefully performed to prove that active oxygen species originate from YSZ lattice. Silver was shown to promote soot oxidation activity by activating the dissociative adsorption of oxygen that can replenish the YSZ support.