NDLI: Temperature Dependence of Solar Light Assisted CO$_{2}$ Reduction on Ni Based Photocatalyst

Content Provider	Springer Nature Link
Author	Albero, Josep Garcia, Hermenegildo Corma, Aveli
Copyright Year	2016
Abstract	Methanation of CO$_{2}$ by H$_{2}$ can be in the future an important reaction to store the surplus of renewable electricity during production peaks. The catalytic thermal CO$_{2}$ methanation (the Sabatier reaction) can be carried out at temperatures above 250 °C using Ni supported on silica-alumina (Ni/SiO$_{2}$–Al$_{2}$O$_{3}$). Recently it has been observed that this exothermic reaction can be promoted by solar light irradiation of Ni/SiO$_{2}$–Al$_{2}$O$_{3}$ at initial near ambient temperatures. In the present work we provide a study of the influence of the initial temperature on the photoassisted Ni/SiO$_{2}$–Al$_{2}$O$_{3}$ methanation of CO$_{2}$, under conditions in which the dark reaction is not observed. An increase of the photoassisted methanation rate with the initial temperature in the range from ambient to 150 °C has been observed. The reaction kinetics for lower initial temperatures exhibited an induction period not observed for reactions performed at higher temperatures. The results are discussed in terms of the operation of plasmon photo activation in which the energy of photons is thermalised in a confined space of the active nanoparticles leading to locally high temperatures and the simultaneous photogeneration of electrons and positive holes.
Starting Page	787
Ending Page	791
Page Count	5
File Format	PDF
ISSN	10225528
Journal	Topics in Catalysis
Volume Number	59
Issue Number	8-9
e-ISSN	15729028
Language	English
Publisher	Springer US
Publisher Date	2016-04-11
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solar fuels Photocatalysis Photothermal methanation Sabatier reaction Catalysis Physical Chemistry Pharmacy Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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