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Deactivation mechanism of alumina supported Pt and Pd catalysts for gas sensor by hexamethyldisiloxane (HMDSO)

机译：六甲基二硅氧烷（HMDSO）对氧化铝PT和Pd催化剂的氧化铝和Pd催化剂的失活机理

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The deactivation mechanism of Pt/γ-alumina and Pd/γ-alumina catalysts for gas sensor by hexamethyldisiloxane (HMDSO) exposure has been investigated. The chemical state and local structure of Pd in the catalysts has been characterized under the reduction and oxidation after HMDSO exposure by in situ X-ray absorption fine structure (XAFS) measurement. The Pd/γ-alumina catalyst after HMDSO exposure hardly changed the chemical state of Pd even under the O_2/N_2 atmosphere though it oxidized easily under the O_2/N_2 atmosphere at the temperature of 300°C.

机译：研究了Pt /γ-氧化铝和Pd /γ-氧化铝催化剂通过六甲基二硅氧烷（HMDSO）暴露的燃气传感器的停用机制。通过原位X射线吸收细结构（XAFS）测量，在HMDSO暴露后的还原和氧化下，催化剂中Pd的化学状态和局部结构已经表征。 HMDSO暴露后的Pd /γ-氧化铝催化剂在O_2 / N_2气氛下，虽然它在o_2 / n_2气氛下在300℃的温度下易于氧化，但是即使在O_2 / N_2气氛下也几乎没有改变PD的化学状态。

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《International Meeting on Chemical Sensors》|2014年||共3页
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作者
Maiko Nishibori; Kimiko Katoh; Toshio Itoh; Noriya Izu; Woosuck Shin;
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原文格式 PDF
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中图分类 TP212.2-532;
关键词
Catalyst; Combustion; Thermoelectric device; Carbon monoxide;

机译：催化剂;燃烧;热电装置;一氧化碳;

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4. Deactivation mechanism of alumina supported Pt and Pd catalysts for gas sensor by hexamethyldisiloxane (HMDSO) [C] . Maiko Nishibori, Kimiko Katoh, Toshio Itoh, International Meeting on Chemical Sensors . 2014

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Deactivation mechanism of alumina supported Pt and Pd catalysts for gas sensor by hexamethyldisiloxane (HMDSO)

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