程序升温脱附导数谱  

Derivative Temperature-Programmed Desorption Spectra

作　　者：胡云行[1] 万惠霖[1] 蔡启瑞[1] 

机构地区：[1]厦门大学化学系固体表面物理化学国家重点实验室,厦门361005

出　　处：《高等学校化学学报》1993年第2期238-243,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：提出了TPD导数谱,并以理论TPD导数谱图为对象,讨论了TPD导数谱在堤高分辨率、消除噪音干扰及确定脱附级数等方面的特点。推导了由TPD一阶、二阶导数谱求算脱附活化能和指前因子的数学方程式,并对其进行了验证。In this paper, derivative Temperature-Programmed Desorption (TPD) spectra were proposed. According to Polangi-Wigner model, a series of theoretical derivative TPD spectra were obtained by computer. Throughout the spectra, the characteristics of the derivative TPD spectra, in raising resolving power, decreasing baseline noise and estimating desorption order, were discussed. The e-quations of calculating desorption activation energy and pre-exponential factor from the 1st and 2nd derivative TPD spectra were obtained and confirmed.

关 键 词：程序升温脱附 导数谱 谱图解析 固体催化剂 表面活性 表面吸附 

分 类 号：O643.36[理学—物理化学] O647.31[理学—化学]