Análise estatística e optimização de perfis de redução termoprogramada (TPR)

Química Nova

Marcio Nele²  Esteban Lopez Moreno¹  Heloysa Martins Carvalho Andrade¹ 

[1] ,Universidade Federal de Rio de Janeiro Escola de Química Rio de Janeiro RJ ,Brasil

关键词: TPR;    temperature programmed reduction;    experimental design;   

DOI  :  10.1590/S0100-40422006000400003

来源: SciELO

【 摘 要 】

The effect of operational variables and their interaction in TPR profiles was studied using a fractional factorial experimental design. The heating rate and the reducing agent concentration were found to be the most important variables determining the resolution and sensitivity of the technique. They showed opposite effects. Therefore, they should be manipulated preferentially in order to obtain optimized TPR profiles. The effect of sample particle size was also investigated. The tests were carried out within a Cu/Zn/Al2O3 catalyst used for the water-gas shift reaction that presented two distinct species of Cu2+ in TPR profiles.

【 授权许可】

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