Noble-metal-free and Pt nanoparticles-loaded, mesoporous oxides as efficient catalysts for CO 2 hydrogenation and dry reforming with methane

András Sápi, T. Rajkumar, Marietta Ábel, Anastasiia Efremova, András Grósz, Anett Gyuris, Kornélia B. Ábrahámné, Imre Szenti, János Kiss, Tamás Varga, Ákos Kukovecz, Zoltán Kónya

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study, a series of free-standing as well as controlled size Pt nanoparticles-loaded mesoporous metal oxides (NiO, Co 3 O 4, CeO 2 and MnO 2 ) with high surface area and designed pore structure were prepared by hard template method and used as catalysts for CO 2 hydrogenation together with dry reforming of CO 2 with methane. The physicochemical properties of catalysts were analysed by N 2 adsorption-desorption isotherm, XRD, TEM, and H 2 -TPR. Pt-free and Pt-loaded mesoporous NiO and Co 3 O 4 performed with high catalytic activity and selectivity for both CO 2 activation reactions. Pt-free NiO exhibited the highest catalytic activity and also showing 100% CH 4 selectivity between 473-673 K and 1:1 H 2 /CO 2 ratio between 673-973 K in CO 2 hydrogenation and dry reforming with methane, respectively. The enhanced catalytic properties can be due to the existence of metallic Ni as well as the optimal dynamics of Ni/NiO x structure under reaction conditions.

Original languageEnglish
Pages (from-to)106-118
Number of pages13
JournalJournal of CO2 Utilization
Volume32
DOIs
Publication statusPublished - Jul 1 2019

Keywords

  • CO hydrogenation
  • Dry reforming of CO
  • Mesoporous oxides
  • Pt nanoparticles

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Process Chemistry and Technology

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