摘要
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。
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.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1995年第3期14-17,共4页
Natural Gas Chemical Industry
关键词
钯
氧化铝
红外光谱
吸附
氧化反应
一氧化碳
Pd/Al_2O_3
bridge-type band
in-situ FT-IR
adsolrption
CO-adsorption
CO oxidation
