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Temperature programmed desorption (TPD) from catalyst surfaces: the symmetry of the TPD curve as a function of the kinetic model

1992; Elsevier BV; Volume: 208; Linguagem: Inglês

10.1016/0040-6031(92)80171-r

1872-762X

Jiřı́ Málek, José M. Criado,

Catalysis and Hydrodesulfurization Studies

Abstract It is known that the shape of the temperature programmed desorption (TPD) curve is closely related to the desorption mechanism. This paper presents an analysis of the problem. The mathematical expression for the shape index of the TPD curve is derived and discussed. A simple method has been described which allows determination of the most suitable kinetic model. The method was used to analyze the experimental data of Ying and Madix for the decomposition of formic acid on a copper surface.