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Controlled Formation of Nickel Oxide Nanoparticles on Mesoporous Silica using Molecular Ni 4 O 4 Clusters as Precursors: Enhanced Catalytic Performance for Dry Reforming of Methane
Author(s) -
Baktash Elham,
Littlewood Patrick,
Pfrommer Johannes,
Schomäcker Reinhard,
Driess Matthias,
Thomas Arne
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201402983
Subject(s) - catalysis , non blocking i/o , methane , nickel , carbon dioxide reforming , mesoporous material , nanoparticle , mesoporous silica , materials science , chemical engineering , inorganic chemistry , oxide , nickel oxide , cubane , syngas , chemistry , nanotechnology , molecule , organic chemistry , metallurgy , engineering
Abstract Supported NiO nanoparticles (NPs) were prepared by impregnation of mesoporous silica SBA‐15 with a molecular, metalorganic [Ni 4 O 4 ] cubane cluster as precursor. By using this ligand‐stabilized Ni cluster, deposition of four Ni ions in close proximity on the silica support was achieved; this resulted in the formation of small and highly dispersed NiO NPs after heat treatment. These clusters were shown to have a significant influence on the formation of NiO NPs compared to a conventional Ni(OAc) 2 precursor. After a further reduction step, the materials were used as catalysts for the dry reforming of methane, which showed that preorganization of the Ni atoms on the support surface had a beneficial effect on the methane conversion rate.