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  English.dicp.cas.cn    Posted:2016-07-13
Non-thermal plasma assisted catalyst applied to dry reforming of methane

Time: 13 July 2016 14:00

Venue: Conference Room on the First Floor, Energy Building1#

Prof. Catherine Batiot-Dupeyrat

Institute of Chemistry of Poitiers, University of Poitiers

Biography:

BATIOT- DUPEYRAT Catherine

Professor

Laboratory : Institute of Chemistry of Poitiers : Materials and Natural Resources, Poitiers France

Background

    September 2012 : Professor

    1997 : Assistant Professor

    1995 : Post-doctoral position at the University of Limerick in Ireland

    1994 : PhD

 Catalytic fluorination in liquid phase: synthesis of substitutes for CFC?

        Research activities

    Catalytic combustion of natural gas

    Dry reforming of methane

    Synthesis of carbon nanomaterials and hydrogen from methane, ethanol

    Catalysis assisted by non-thermal plasma: dry reforming of methane, VOC oxidation…

    Scientific Production

    52 publications in International journal

    15 publications in congress book

    Patents : 2 French, 1European, 1 international

    30 oral communications (5 national, 20 international)

   Supervision

    10 PhD students

    2 post-doctoral researchers

    15 undergraduate students

    Partnership, contract

    Industrial contract with companies : SAT, ALSTROM…

    French universities : Polytech Paris, ICG Montpellier, UCCS Lille, ICPEES Strasbourg

    International programms : PICS with Colombia, PHC Volubilis with Marocco.

Abstract:

Dielectric Barrier Discharge (DBD) plasma was successfully used for direct CO2 dissociation (CO2 splitting) and appears also as an interesting alternative technology to conventional catalytic dry reforming reaction.

A recent study on the transformation of methane and carbon dioxide into synthesis gas performed by a plasma discharge coupled with a catalyst is described. Experiments were conducted at room temperature and 300°C, the catalyst being composed of lanthanum oxide deposited at the surface of alumina balls according to a classical incipient wetness method. The catalyst was placed into the plasma zone, filling it completely. The results in terms of reactants conversion and selectivity to products were compared with glass balls at a similar residence time into the plasma discharge.

The combination of the catalyst with the discharge does not modify significantly the transformation of reactants at room temperature whereas at 300°C, temperature at which the catalyst alone (10% La2O3/alumina balls) is inactive, the CH4 conversion increases almost by a factor of 3 in comparison with glass balls, the CO2 conversion being only slightly increased. The synergy between plasma and catalyst was then clearly demonstrated at 300°C whereas at room temperature the effect remains very low. It is proposed that the reaction between the oxygen species generated by CO2 dissociation in gas phase (CO2 splitting) replenish the surface oxygen species which have reacted with methane according to a Mars and Van Krevelen type mechanism.

Contact: DNL-0901 WANG Sheng (84379332)

 

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