Pd/ZrO₂, Pd-Sn/ZrO₂ and Sn/ZrO₂ were prepared by incipient wetness using Pd(NO₃)₂·XH₂O and SnC₄H₄O₆·XH₂O as precursors, dried and calcined in static air at 500 °C, 800 °C or 1100 °C. The influence of Sn species in the oxygen storage capacity of the catalysts, distribution of Pd particle sizes and CH₄ oxidation reaction were investigated. Pd particle size was larger on Sn-containing catalysts and showed lower mobility than those in the absence of Sn. Sn oxide species act as an oxygen reservoir that are easily transferred to Pd surfaces promoting the oxidation reaction of methane. For Pd-Sn-containing solids calcined at 1100 °C, the contribution of Sn in the CH₄ oxidation reaction is negligible.

中文翻译：

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Pd-Sn / ZrO ₂催化剂上甲烷的低温氧化

以Pd（NO ₃）₂ ·XH ₂ O和SnC ₄ H ₄ O ₆ ·XH ₂ O为前驱体，通过初期湿润来制备Pd / ZrO ₂，Pd-Sn / ZrO ₂和Sn / ZrO ₂，进行干燥和煅烧。 500°C，800°C或1100°C的静态空气。Sn种类对催化剂储氧能力，Pd粒径分布和CH _4的影响研究了氧化反应。与不含Sn的催化剂相比，含Sn的催化剂上的Pd粒径较大，并且迁移率较低。氧化锡物质起着储氧剂的作用，可以很容易地转移到Pd表面，从而促进甲烷的氧化反应。对于在1100°C下煅烧的含Pd-Sn的固体，Sn在CH ₄氧化反应中的贡献可忽略不计。