From surface acidity to surface reactivity; inhibition of oxide dissolution
نویسندگان
چکیده
منابع مشابه
Surface Structure and Reactivity of Rhodium Oxide
Rhodium metal catalysts are used in wide a range of applications, including automotive catalytic converters for NO reduction, N2O decomposition, and CO oxidation. 1 7 Theoretical and experimental studies have found that, under realistic environmental conditions, rhodium surfaces can oxidize, forming thin films or thicker bulk oxides. In the case of CO oxidation, it has been shown that the forma...
متن کاملHow strain affects the reactivity of surface metal oxide catalysts.
Highly dispersed molybdenum oxide supported on mesoporous silica SBA-15 has been prepared by anion exchange resulting in a series of catalysts with changing Mo densities (0.2-2.5 Mo atoms nm(-2) ). X-ray absorption, UV/Vis, Raman, and IR spectroscopy indicate that doubly anchored tetrahedral dioxo MoO4 units are the major surface species at all loadings. Higher reducibility at loadings close to...
متن کاملAn insight into effect of surface functional groups on reactivity of Sphalerite (110) surface with Xanthate collector: a DFT study
The reactivity of the protonated and hydroxylated sphalerite (1 1 0) surface with xanthate was simulated using the density functional theory (DFT). The difference between the energy of the lowest unoccupied molecular orbital of the sphalerite surface and the energy of the highest occupied molecular orbital of xanthate ( was used to compare the reaction capability of xanthate with fresh and fun...
متن کاملNitroxide-Mediated Radical Polymerization of Styrene Initiated from the Surface of Titanium Oxide Nanoparticles
Titanium dioxide (TiO2) nanoparticles, with an average size of about 45 nm, were encapsulated by polystyrene using in situ nitroxide mediated radical polymerization in the presence of 3-aminopropyl triethoxy silane (APTES) as a coupling agent and 2, 2, 6, 6-tetramethylpiperidinyl-1-oxy as a initiator. First, the initiator for NMRP was covalently bonded onto the surface of Titanium dioxide na...
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ژورنال
عنوان ژورنال: Aquatic Sciences
سال: 1993
ISSN: 1015-1621,1420-9055
DOI: 10.1007/bf00877272