CO2 mitigation by carbon nanotube formation during dry reforming of methane analyzed by factorial design combined with response surface methodology

催化学报 , 2014, (4): 514-523. doi: 10.1016/S1872-2067(14)60018-8

Tiago P. Braga ^1, , Regina C. R. Santos ^2, , Barbara M. C. Sales ^3, , Bruno R. da Silva ^4, , Ant?nio N. Pinheiro ^5, , Edson R. Leite ^6, , Antoninho Valentini ^7,

1.Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP,60440-554, Brazil

2.Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP,60440-554, Brazil

3.Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP,60440-554, Brazil

4.Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP,60440-554, Brazil

5.Department of Chemistry, Federal University of S?o Carlos, S?o Carlos, SP, CEP,13560-905, Brazil

6.Department of Chemistry, Federal University of S?o Carlos, S?o Carlos, SP, CEP,13560-905, Brazil

7.Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP,60440-554, Brazil

基金项目: the National Council for Scientific and Development Technological

CO2 mitigation by carbon nanotube formation during dry reforming of methane analyzed by factorial design combined with response surface methodology

Keywords： Factorial design

A factorial experimental design was combined with response surface methodology (RSM) to opti-mize the catalyzed CO2 consumption by coke deposition and syngas production during the dry re-forming of CH4. The CH4/CO2 feed ratio and the reaction temperature were chosen as the variables, and the selected responses were CH4 and CO2 conversion, the H2/CO ratio, and coke deposition. The optimal reaction conditions were found to be a CH4/CO2 feed ratio of approximately 3 at 700 °C, producing a large quantity of coke and realizing high CO2 conversion. Furthermore, Raman results showed that the CH4/CO2 ratio and reaction temperature affect the system’s response, particularly the characteristics of the coke produced, which indicates the formation of carbon nanotubes and amorphous carbon.

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CO2 mitigation by carbon nanotube formation during dry reforming of methane analyzed by factorial design combined with response surface methodology

参考文献