%0 Generic
%A Neagu, Dragos
%A Otto, Svenja-K.
%A Kousi, Kalliopi
%A Bekris, Leonidas
%A Janek, Jürgen
%A Metcalfe, Ian S.
%D 2019
%T Exsolved Ni nanoparticles acting as oxygen storage reservoirs and active sites for redox CH4 conversion
%U https://data.ncl.ac.uk/articles/dataset/Exsolved_Ni_nanoparticles_acting_as_oxygen_storage_reservoirs_and_active_sites_for_redox_CH4_conversion/8323601
%R 10.25405/data.ncl.8323601.v1
%2 https://data.ncl.ac.uk/ndownloader/files/17810096
%K Perovskites
%K exsolution
%K chemical looping
%K methane
%K hydrogen production
%K syngas
%K Catalytic Process Engineering
%K Composite and Hybrid Materials
%X
The growing demand
for H2 and syngas requires the development of new, more efficient
processes and materials for their production, especially from CH4
that is a widely available resource. One process that has recently received
increased attention is chemical looping CH4 partial oxidation, which
however, poses stringent requirements on material design, including fast oxygen
exchange and high storage capacity, high reactivity towards CH4
activation and resistance to carbon deposition, often only met by composite
materials. Here we design a catalytically active material for this process,
based on exsolution from a porous titanate. The exsolved Ni particles act as
both oxygen storage centres and as active sites for CH4 conversion
under redox conditions. We control the extent of exsolution, particle size and
population of Ni particles in order to tune the oxygen capacity, reactivity and
stability of the system and, at the same time, obtain insights in parameters
affecting and controlling exsolution.
%I Newcastle University