Ni/La2O3-SiO2 Catalysts Applied to Glycerol Steam Reforming Reaction: Effect of the Preparation Method and Reaction Temperature

被引：9

作者：

Thyssen, Vivian V. ^{[1
]}

Assaf, Elisabete M. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2014年 / 25卷 / 12期

基金：

巴西圣保罗研究基金会;

关键词：

nickel; catalysts; preparation method; steam reforming; glycerol; HYDROGEN-PRODUCTION; NICKEL-CATALYSTS; ETHANOL; NI; MG;

D O I：

10.5935/0103-5053.20140273

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ni/La2O3-SiO2 catalysts were obtained by different methods of preparation: sequential impregnation, simultaneous impregnation (I-sim), precipitation of support followed by Ni impregnation and co-precipitation. The samples were characterized by energy-dispersive X-ray spectroscopy, nitrogen physisorption, X-ray diffraction (XRD), infrared spectroscopy, temperature programmed reduction (TPR), H-2 chemisorption, scanning electron microscopy and thermogravimetric analysis. XRD and TPR results indicated two Ni species in the samples: NiO (I-sim) and La2NiO4 (other samples). Catalytic tests were performed in glycerol steam reforming at 600 degrees C. The best result was observed with I-sim catalyst, which presented the higher reduction degree, metallic dispersion and metallic area (TPR and TPD). This catalyst was also tested at 500 degrees C and 700 degrees C and performed best at 600 degrees C.

引用

页码：2455 / 2465

页数：11

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