Pd-impregnated Pt/SO42-/ZrO2-Al2O3 Catalysts for Isomerization of Straight Light Naphtha
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چکیده
منابع مشابه
Adsorption and Reaction of CO on (Pd–)Al2O3 and (Pd–)ZrO2: Vibrational Spectroscopy of Carbonate Formation
γ-Alumina is widely used as an oxide support in catalysis, and palladium nanoparticles supported by alumina represent one of the most frequently used dispersed metals. The surface sites of the catalysts are often probed via FTIR spectroscopy upon CO adsorption, which may result in the formation of surface carbonate species. We have examined this process in detail utilizing FTIR to monitor carbo...
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The performances of different promoters (CeO2, ZrO2 and Ce0.5Zr0.5O2 solid solution) modified Pd/SiC catalysts for methane combustion are studied. XRD and XPS results showed that Zr 4+ could be incorporated into the CeO2 lattice to form Zr0.5Ce0.5O2 solid solution. The catalytic activities of Pd/CeO2/SiC and Pd/ZrO2/SiC are lower than that of Pd/Zr0.5Ce0.5O2/SiC. The Pd/Zr0.5Ce0.5O2/SiC catalys...
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The adsorption of CO on Pd/Al2O3/Ta~110! model catalysts was studied using infrared reflection adsorption spectroscopy ~IRAS! for two different Pd coverages, corresponding to 25–30 and 60–70 Å average particle sizes. Striking similarities between the IRAS data for the larger particles and Pd single crystals indicate that the particles are comprised predominantly of ^111& and ^100& facets. The i...
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The kinetics of the CO + NO and CO + O2 reactions have been studied over several different Pd/Al2O3 powder catalysts covering a wide range of average Pd particle sizes. The structure-insensitive nature of the CO + O2 reaction over Pd has been exploited to determine the relative dispersions in several Pd/Al2O3 powder catalysts by measuring the rate of that reaction and normalizing against surfac...
متن کاملPartial oxidation and CO2 reforming of methane on Pt/Al2O3, Pt/ZrO2, and Pt/Ce–ZrO2 catalysts
The partial oxidation and CO2 reforming of methane were studied on Pt/Al2O3, Pt/ZrO2, and Pt/ Ce–ZrO2 catalysts. The reducibility and the oxygen transfer capacity were evaluated by oxygen storage capacity (OSC). The effect of the support on the cleaning mechanism of the catalyst surface was investigated by the sequence of CH4/O2 and CH4/CO2 pulses. The Pt/Ce–ZrO2 catalyst showed the highest sta...
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ژورنال
عنوان ژورنال: Journal of the Japan Petroleum Institute
سال: 2004
ISSN: 1346-8804,1349-273X
DOI: 10.1627/jpi.47.348