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热脱附技术已被广泛地用于研究金属丝、氧化物膜、氧化物催化剂和粉末样品的表面性质和脱附动力学.根据升温速度的不同,这一技术可分为两种:一种是在超高真空条件下使吸附物从快速加热的金属丝上脱附,称为闪光灯丝脱附(闪脱),闪脱技术对于清洁金属表面的气体吸附已提供了大量有价值的资料,但它仅能用于导热导电性能良好的金属材料;另一种是在真空体系或在惰性载气中,以较慢的加热速度使吸附物脱
Thermal desorption techniques have been widely used to study the surface properties and desorption kinetics of metal wires, oxide films, oxide catalysts, and powder samples, and the technique can be divided into two according to the rate of temperature rise: Is to desorb the adsorbate from the rapidly heated wire under ultrahigh vacuum conditions, known as flash filament desorption (flash off). The flash off technique has provided a great deal of valuable information on the gas adsorption on clean metal surfaces, But it can only be used for good thermal conductivity of metal materials; the other is in a vacuum system or inert carrier gas at a slower heating rate of the adsorbed off