缺氧及富氧条件下CuFe2O4催化热解酸性红B的原位FTIR反射光谱研究

用原位红外漫反射光谱法研究了在缺氧及富氧条件下CuFe2O4催化热解酸性红B(ARB)的反应过程。结果表明，两种反应气氛对染料分子中磺酸基团的热分解没有影响，但对偶氮基团及芳环的氧化分解影响显。在空气中，ARB的热解更迅速，300℃时可完全氧化为CO2及硝酸盐。而在N2气氛中，加热至300℃时ARB难以完全氧化热解，此时即使再通空气也不易将其完全氧化，而要在更高温度下(500℃)才能快速、彻底氧化成CO2及硝酸盐。

In Situ FTIR Spectroscopic Studies of the Catalytic Combustion of Acid Red B on CuFe2O4 in the Presence and Absence of O2

The reaction process of catalytic combustion of ARB on CuFe2O4 in the presence and absence of O2 was studied by in situ DRIFT spectroscopy. The results showed that the decomposition of the sulfonic group of ARB molecule was not affected by the reaction atmosphere, but the decompositions of azo group and aromatic ring were markedly affected by the presence or absence of O2. The catalytic combustion of ARB was faster in air atmosphere than that in N2 atmosphere, and ARB could be completely oxidized to CO2 and nitrate at 300 degrees C. But in N2 atmosphere, it was very difficult for the decomposition of ARB to complete at 300 degrees C, even though air was introduced following this process. The temperature required for the rapid and complete decomposition would be as high as 500 degrees C.