Influence of the synthesis method on the DTG-TPR profiles of Pt/WOx-ZrO2 bifunctional catalysts

被引：10
|
作者：
Pedrosa, A. M. Garrido
Souza, M. J. B.
Lima, S. H.
Melo, Dulce M. A.
Souza, A. G.
Araujo, A. S.
机构：
[1] Univ Fed Rio Grande Norte, Dept Chem, BR-59078970 Natal, RN, Brazil
[2] Fed Univ Sergipe, Dept Chem Engn, BR-49100000 Sao Cristovao, SE, Brazil
[3] Univ Fed Paraiba, CCEN, Dept Chem, BR-59059900 Joao Pessoa, Paraiba, Brazil
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2007年 / 87卷 / 03期
关键词：
DTG-TPR; impregnation and precursor polymeric methods; Pt/WOx-ZrO2;
D O I：
10.1007/s10973-006-7777-x
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Pt/WOx-ZrO2 bifunctional catalysts were synthesized using impregnation and polymeric precursor methods. After the synthesis process the samples were calcined at 600, 700 and 800 degrees C and characterized by X-ray diffraction, nitrogen adsorption and temperature programmed reduction study by thermogravimetry. DTG-TPR profiles showed between three and five reduction events at different temperatures attributed to platinum reduction and to different stages of tungsten species reduction. A comparative study of the synthesis method influence on the DTG-TPR curves was accomplished.
引用
收藏
页码：703 / 707
页数：5
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