能源化学(英文) ›› 2017, Vol. 26 ›› Issue (5): 942-947.DOI: 10.1016/j.jechem.2017.07.002

• ARTICLES • 上一篇    下一篇

NiO-CaO materials as promising catalysts for hydrogen production through carbon dioxide capture and subsequent dry methane reforming

Alejandra Cruz-Hernández, J. Arturo Mendoza-Nieto, Heriberto Pfeiffer   

  1. Laboratorio de Fisicoquímica y Reactividad de Superficies(LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Del. Coyoacán, CP 04510, Ciudad de México, Mexico
  • 收稿日期:2017-05-23 修回日期:2017-07-02 出版日期:2017-09-15 发布日期:2017-11-10
  • 通讯作者: Heriberto Pfeiffer,E-mail addresses:pfeifferperea@gmail.com,pfeiffer@iim.unam.mx
  • 基金资助:

    This work was financially supported by the projects PAPⅡTUNAM (IN-101916) and SENER-CONACyT. A. Cruz-Hernández thanks CONACyT and J. A. Mendoza-Nieto thanks DGAPA-UNAM for financial support. Authors thank A. Tejeda for technical help.

NiO-CaO materials as promising catalysts for hydrogen production through carbon dioxide capture and subsequent dry methane reforming

Alejandra Cruz-Hernández, J. Arturo Mendoza-Nieto, Heriberto Pfeiffer   

  1. Laboratorio de Fisicoquímica y Reactividad de Superficies(LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Del. Coyoacán, CP 04510, Ciudad de México, Mexico
  • Received:2017-05-23 Revised:2017-07-02 Online:2017-09-15 Published:2017-11-10
  • Contact: Heriberto Pfeiffer,E-mail addresses:pfeifferperea@gmail.com,pfeiffer@iim.unam.mx
  • Supported by:

    This work was financially supported by the projects PAPⅡTUNAM (IN-101916) and SENER-CONACyT. A. Cruz-Hernández thanks CONACyT and J. A. Mendoza-Nieto thanks DGAPA-UNAM for financial support. Authors thank A. Tejeda for technical help.

摘要: In this work, CaO-NiO mixed oxide powders were evaluated as consecutive CO2 chemisorbents and catalytic materials for hydrogen production thought the CH4 reforming process. Between the NiOimpregnated CaO and CaO-NiO mechanical composite, the first one presented better chemical behaviors during the CO2 capture and CH4 reforming processes, obtaining syngas (H2 + CO) as final product. Results showed that syngas was produced at two different temperature ranges, between 400 and 600℃ and at T > 800℃, where the first temperature range corresponds to the CH4 reforming process but the second temperature range was attributed to a different catalytic reaction process:CH4 partial oxidation. These results were confirmed through different isothermal and cyclic experiments as well as by XRD analysis of the final catalytic products, where the nickel reduction was evidenced. Moreover, when a CO-O2 flow was used during the carbonation process a triple process was achieved:(i) CO oxidation, (ii) CO2 chemisorption and (iii) CH4 reforming. Using this gas flow the hydrogen production was always higher than that obtained with CO2.

关键词: Methane reforming, CO2 capture, Calcium oxide, H2 production, NiO supported

Abstract: In this work, CaO-NiO mixed oxide powders were evaluated as consecutive CO2 chemisorbents and catalytic materials for hydrogen production thought the CH4 reforming process. Between the NiOimpregnated CaO and CaO-NiO mechanical composite, the first one presented better chemical behaviors during the CO2 capture and CH4 reforming processes, obtaining syngas (H2 + CO) as final product. Results showed that syngas was produced at two different temperature ranges, between 400 and 600℃ and at T > 800℃, where the first temperature range corresponds to the CH4 reforming process but the second temperature range was attributed to a different catalytic reaction process:CH4 partial oxidation. These results were confirmed through different isothermal and cyclic experiments as well as by XRD analysis of the final catalytic products, where the nickel reduction was evidenced. Moreover, when a CO-O2 flow was used during the carbonation process a triple process was achieved:(i) CO oxidation, (ii) CO2 chemisorption and (iii) CH4 reforming. Using this gas flow the hydrogen production was always higher than that obtained with CO2.

Key words: Methane reforming, CO2 capture, Calcium oxide, H2 production, NiO supported