用玻璃外循环无梯度反应器研究了Mo-Ce/SiO_2催化剂的甲醇氧化制甲醛的动力学。吡啶吸附的红外光谱鉴别出催化剂Lewis酸的存在。红外光谱证实甲醇在催化剂上发生化学吸附。用脉冲色谱法测定了甲醇及甲醛的吸附热。随着甲醛分压的增加,甲醇氧化制甲醛的速度随之减小。进行了催化剂被甲醇还原及还原催化剂用O_2再氧化的脉冲实验。甲醇氧化的动力学服从甲醇及甲醛吸附的Redox机理方程。 The kinetics of methanol oxidation of formaldehyde to formaldehyde over Mo-Ce / SiO 2 catalyst was investigated by a glass-free external loop gradientless reactor. Pyridine adsorption infrared spectroscopy identified the presence of the catalyst Lewis acid. Infrared spectroscopy confirmed the chemical adsorption of methanol on the catalyst. The adsorption heat of methanol and formaldehyde was determined by pulse chromatography. As the partial pressure of formaldehyde increases, the rate of formaldehyde oxidation to methanol decreases. The pulse experiments were carried out to reoxidize the catalyst with methanol and reduce the catalyst with O_2. The kinetics of methanol oxidation obeys the Redox mechanism of methanol and formaldehyde adsorption.