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Nanoscale (111) faceted rock-salt metal oxides in catalysis
被引:55
作者:
Cadigan, Christopher A.
[1
]
Corpuz, April R.
[1
]
Lin, Feng
[1
]
Caskey, Christopher M.
[1
]
Finch, Kenneth B. H.
[1
]
Wang, Xue
[1
]
Richards, Ryan M.
[1
]
机构:
[1] Colorado Sch Mines, Dept Chem & Geochem, Golden, CO 80401 USA
关键词:
CLAISEN-SCHMIDT CONDENSATION;
CATALYTICALLY ACTIVE GOLD;
LOW-TEMPERATURE OXIDATION;
ULTRATHIN MGO FILMS;
MAGNESIUM-OXIDE;
CHEMICAL REAGENTS;
PHOTOCATALYTIC DEGRADATION;
NANOCRYSTALLINE MGO;
IN-SITU;
DESTRUCTIVE ADSORPTION;
D O I:
10.1039/c2cy20373a
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Facet-specific growth is highly desirable for catalysts, as conversion and selectivity can be altered with increasing amounts of particular active sites. The (100) surface of a rock-salt structure is comprised of alternating oxygen anions and metal cations, similar to the (110) facet. The (111) surface differs substantially in that an ideal (111) surface would consist solely of oxygen anions or metal cations, and cannot exist as-is. However, wet chemical syntheses of MgO(111) and NiO(111) have recently been reported; theory and experiments show the (111) surface is stabilized as a hydroxylated surface. These (111) faceted metal oxides exhibit catalytic properties that differ significantly from their (100) counterparts. Here, we discuss the theory and performance of the (111) rock-salt metal oxides in catalysis, as supports, and as adsorbents.
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页码:900 / 911
页数:12
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