least-worn surface

The specific surface area of copper in the Cu Zn Al catalyst was determined by pulse chromatography using N 2O as chemical adsorption medium.

以Ｎ２Ｏ为化学吸附介质，在２０℃下采用色谱脉冲法测定Ｃｕ－Ｚｎ－Ａｌ催化剂中活性铜的有效表面积。