The acid proper-ties of its coking in front and behind by temperature programmed desorption of ammonia(TPD).
用氨程序升温脱附法（TPD）研究了它们在积炭前后的酸性变化。
The catalyst is characterized by temperature programmed reduction (TPR), H_2 chemisorption and ammonia temperature programmed desorption (NH3-TPD).
采用程序升温还原(TPR)、氢的化学吸附和NH_3的程序升温脱附(NH3 - TPD)对催化剂进行了表征。
The Temperature Programmed Desorption(TPD) method is applied to research the series deactivation catalysts of Zn(Ac) 2. The catalyst samples was obtained from chemical factory.
用程序升温脱附法测定了乙炔在衰化程度不同的醋酸锌催化剂上的脱附峰面积。
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