催化学报 ›› 2014, Vol. 35 ›› Issue (4): 514-523.DOI: 10.1016/S1872-2067(14)60018-8

• 研究论文 • 上一篇    下一篇

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

Tiago P. Bragaa, Regina C. R. Santosa, Barbara M. C. Salesa, Bruno R. da Silvaa, Antônio N. Pinheirob, Edson R. Leiteb, Antoninho Valentinia   

  1. a Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP:60440-554, Brazil;
    b Department of Chemistry, Federal University of São Carlos, São Carlos, SP, CEP:13560-905, Brazil
  • 收稿日期:2013-09-19 修回日期:2013-12-30 出版日期:2014-03-20 发布日期:2014-03-21
  • 通讯作者: Antoninho Valentini

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

Tiago P. Bragaa, Regina C. R. Santosa, Barbara M. C. Salesa, Bruno R. da Silvaa, Antônio N. Pinheirob, Edson R. Leiteb, Antoninho Valentinia   

  1. a Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, Fortaleza, CE, CEP:60440-554, Brazil;
    b Department of Chemistry, Federal University of São Carlos, São Carlos, SP, CEP:13560-905, Brazil
  • Received:2013-09-19 Revised:2013-12-30 Online:2014-03-20 Published:2014-03-21
  • Contact: Antoninho Valentini

摘要:

A factorial experimental design was combined with response surface methodology (RSM) to optimize the catalyzed CO2 consumption by coke deposition and syngas production during the dry reforming 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 ℃, 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.

关键词: Factorial design, Carbon dioxide, Reforming, Methane, Carbon nanotube

Abstract:

A factorial experimental design was combined with response surface methodology (RSM) to optimize the catalyzed CO2 consumption by coke deposition and syngas production during the dry reforming 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 ℃, 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.

Key words: Factorial design, Carbon dioxide, Reforming, Methane, Carbon nanotube