CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 2018 Spain English Publisher:Elsevier BVJournal:Journal of CO2 Utilization, volume 24, pages 509-515 (issn: 2212-9820,

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Authors: Álvarez Moreno, Andrea; Bobadilla Baladrón, Luis Francisco; Garcilaso, V.; Centeno Gallego, Miguel Ángel; Odriozola Gordón, José Antonio;

doi: 10.1016/j.jcou.2018.01.027

handle: 11441/143922 , 10261/169523

CO2 reforming of methane over Ni-Ru supported catalysts: On the nature of active sites by operando DRIFTS study

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Abstract

The present paper addresses the nature of the active sites of a bimetallic Ni-Ru supported catalyst on the dry reforming of methane (DRM). The structural characterization by XRD and Raman spectroscopy, along with the reducibility study (TPR-H2) of the samples, evidenced the existence of a strong Ni–Ru interaction in the bime- tallic system. We have assumed that Ru atoms block the most reactive Ni sites (step-edge sites) leaving less reactive centers for methane activation (terraces). In this way, operando DRIFTS measurements revealed that Ru decreases the catalytic activity but favors the carbon gasification and prevents the CO dissociation.

Ministerio de Economía y Competitividad de España MINECO y fondos FEDER-ENE2013-47880-C3-2-R y ENE2015-66975-C3-2-R

Junta de Andalucía y fondos FEDER-TEP-8196

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Spain

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Keywords

Dry reforming of methane, Ni-Ru bimetallic, Operando DRIFTS

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