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Excess heat of mixing of pyridine bases with toluene

Experimental results and theoretical description

Journal of Thermal Analysis and Calorimetry
Authors: H. Wilczura, T. Kasprzycka-Guttman, and A. Myslinski

Abstract  

The excess heats of mixing of pyridine bases with toluene at 298.15 K were measured, and the Prigogine-Flory-Patterson theory was applied to describe the experimental results.

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cells or gas turbines. However, its valorization through possible feedstock treatment in its raw form has not yet been studied. This project considers usage of this hydrogen mixture for the hydrogenation of toluene. However, this initial paper deals only

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Introduction Volatile organic compounds (VOCs, such as acetone, toluene, formaldehyde and other light weight hydrocarbons) are toxic and contribute significantly to the formation of the photochemical smog, which has remarkable

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Abstract  

Toluene was tritiated singly or as an equimolar mixture with benzene using HTO in the presence of FeCl3 as a catalyst. An o, poriented tritium distribution in the ring of toluene at the initial stage of reaction changed into uniform one with elapse of reaction time at 40 °C, whereas such a rapid change was not observed at 5 °C. By tritiation of the equimolar mixture at 6 °C, the partial rate factors were determined as of=264, mf=7, and pf=189 at the initial stage of the reaction. A possible reaction mechanism is discussed.

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surfactant-assisted method and used as support of NiO nanocatalysts for total oxidation of carbon monoxide and toluene. The effects of the NiO content on the catalytic activity of the mesoporous NiO/Ce 0.8 Zr 0.2 O 2 catalysts were investigated in detail

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, toluidine is prepared by converting toluene to a derivative, such as nitro-toluene [ 1 – 3 ], cresol [ 4 ] or chloro-toluene [ 5 ], and then converting the derivative to toluidine. Such indirect methods have long been recognized as less than optimal with

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incorporation into MCM-41 [ 4 ]. Different alkylation reactions such as alkylation of naphthalene with alcohols [ 15 ], toluene with alkenes [ 16 , 17 ] and alcohols [ 18 , 19 ] have been carried out by mesoporous catalysts. Moreover, the benzylation reaction

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efficiency, in the evaluation of possible environmental impacts, molecular dynamics, and process design [ 1 – 3 ]. Anisaldehyde is used in perfume and pharmaceutical industries. Toluene is used as an industrial feedstock and as a solvent. Mesitylene is used

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Abstract  

The catalytic behaviour of ceria, zirconia and ceria–zirconia mixed oxides in the temperature-programmed degradation of toluene and n-hexane was analysed by means of evolved gas analysis (mass spectrometry). Pure cerium oxide resulted the most active catalyst in the oxidation of both compounds. This fact revealed the crucial role of the surface oxygen species in the decomposition of this type of hydrocarbons. The low affinity of CeO2 for H2O and CO2, the major oxidation products, may be also responsible for the observed highly active catalytic behaviour.

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Abstract  

Mathematical modeling of toluene oxidation under unsteady state catalyst created by forced oscillations of concentration of toluene in the reactor inlet was carried out. It is shown that, under periodic reactor operation, the benzaldehyde yield was up to several times higher than the steady state value. This was explained by the participation of different oxygen species in the partial and total oxidation on the catalyst surface.

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