原位红外研究Pd／Al_2O_3催化CO氧化反应

用原位红外技术研究了Ｐｄ／Ａｌ２Ｏ３催化ＣＯ氧化反应，对ＣＯ吸附态的特征以及ＣＯ氧化反应中ＣＯ和Ｏ２的配比进行了试验，获得Ｐｄ／Ａｌ２Ｏ３吸附多重谱带和它在２８５～３７３Ｋ温区范围内的变化情况。由此证明，Ｐｄ与Ａｌ２Ｏ３发生了相互作用。根据桥型谱带在ＣＯ和Ｏ２共吸附于不同温度时的变化，确定了转化反应较快的ＣＯ和Ｏ２配比为２：１。

In-situ FT-IR studies on Pd/Al_2O_3 catalyst for CO oxidation

study on the catalysis of Pd/Al2O3 in CO oxidation is carried out by using in-situ FT-IR technology, and experiments are made for characterization of CO adsorption state and for different reactant distributions, thereby the multiple band of CO adsorption on Pd/Al2O3 and its variation by raising temperature from 285 to 373 K are observed. Furthermore,an interaction mechanism is proposed between pd and Al2O3, and the CO to O2 ratio in favor of quick reactive transformation is determined to be 2:1, according to the intensity variation of bridge-type band for CO-adsorption of CO and O2 at different temperatures.