ESR investigations of platinum supported on alumina and titania
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چکیده
منابع مشابه
CATALYTIC REFORMING OF n-HEPTANE ON PLATINUM-TUNGSTEN SUPPORTED ON GAMMA-ALUMINA
The mono-metallic and bi-metallic catalysts have been prepared by impregnating with solutions containing a compound of H2PtCl6,WO3 and 1ml HCl (0.1 mol). It should be noted that the catalysts’ activity and selectivity have been determined under these conditions : 450-5000C ,and 15-25atm by H2. For converting n-heptane , the molar ratio H2/C7H16 is 5 , and LHSV is 1.5ml/h. It has been proved tha...
متن کاملcatalytic reforming of n-heptane on platinum-tungsten supported on gamma-alumina
the mono-metallic and bi-metallic catalysts have been prepared by impregnating with solutions containing a compound of h2ptcl6,wo3 and 1ml hcl (0.1 mol). it should be noted that the catalysts’ activity and selectivity have been determined under these conditions : 450-5000c ,and 15-25atm by h2. for converting n-heptane , the molar ratio h2/c7h16 is 5 , and lhsv is 1.5ml/h. it has been proved tha...
متن کاملESR Studies on Platinum Uracil Blue
Anticancer Active Compound, cis-Dichlorodiammineplatinum (II), ESR, Platinum Uracil Blue, Redox Properties ESR spectra of platinum uracil “blue” are discussed. Two main types of paramagnetic species have been found, one of which can be explained by assuming an unpaired electron spin delocal ized over dz2-orbitals of two equivalent Pt centers, the other one is attributed to a more localized d7 ...
متن کاملTextural Stability of Titania-Alumina Composite Membranes
Textural evolution (porosity reduction, pore and crystallite growth) in titania-alumina composite membranes has been studied using thermal analysis, X-ray diffraction, field emission scanning electron microscopy and N, physisorption techniques. The presence of alumina in the membranes improved the thermal stability of the porous texture by retarding the anatase-to-rutile phase transformation a...
متن کاملHydrosilylation of alkynes catalysed by platinum on titania
The heterogeneous hydrosilylation of alkynes catalysed by platinum on titania is reported. A variety of hydrosilanes react with both terminal and internal alkynes to furnish the corresponding vinyl silanes in high yields and short reaction times as well as in a regioand stereoselective manner. The catalyst can be easily recovered and reused in several consecutive cycles. 2010 Elsevier B.V. All ...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry
سال: 1983
ISSN: 0022-3654,1541-5740
DOI: 10.1021/j100224a037