Wyniki wyszukiwania - BazTech

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Application of recycled natural aluminasilicate doped with vanadium for the decontamination of the air

Marcewicz-Kuba A., Olszewska D.

Polish Journal of Chemical Technology

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2007

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Vol. 9, nr 2

65-67

EN

This paper reports studies on the influence of vanadium concentration on the catalytic activity of DESONOX catalysts (in DESOX reaction) based on modified montmorillonite from Jelsovy Potok. The investigation of the influence on the physicochemical properties of the catalysts on their behaviour has also been studied.

2

Niskoemisyjne spalanie węgla kamiennego z zastosowaniem katalizatorów DESONOX

Marcewicz-Kuba A., Olszewska D.

Gospodarka Surowcami Mineralnymi

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2007

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T. 23, z. 3s

183-188

PL

W pracy przedstawiono wyniki badań nad wpływem modyfikacji katalizatorów typu DESONOX na wielkość emisji ditlenku siarki, powstającego w trakcie procesu spalania węgla kamiennego. Przedstawiono właściwości katalitycznych katalizatorów typu DESONOX na bazie zeolitu promowanych jonami metali przejściowych, niklu aktywnego kobaltu. Impregnacje materiału aktywnego wykonano różnymi metodami w celu określenia wpływu metody nanoszenia materiału aktywnego na nośnik na aktywność katalityczną katalizatora DESONOX.

EN

The zeolite is exemplifying promising material as the DESONOX type of catalysts. Main goal of this work is preparation of catalyst. Support was impregnated with cobalt or nickel ions by different methods: wet impregnation, double impregnation, adsorption from water and water-saccharose solution of cobalt and nickel ions. The catalysts were physical-chemical characterized (texture, structure). The catalytic properties were studied by reaction of burn with coal in the flow reactor. Hard coal from mine 'Julian' and 'Bogdanka' from Poland with or without the catalysts addition were burnt in an atmosphere of air at 1123 K during 4 hours and using an electric furnace. The mass ratio of the DESONOX catalyst added to the investigated samples of the hard coal was 1:500.

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Co-precipitated and impregnated DESONOX type catalysts - comparison of the sewage generated during the synthesis process

Marcewicz-Kuba A., Nazimek D.

Polish Journal of Chemical Technology

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2005

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Vol. 7, nr 4

21-23

EN

Combustion of hard coal causes emission of gaseous chemicals (SO2, NOx), airborne particles and fly ashes into the atmosphere. The catalytic process of SO2 removal from combustion gases takes place on the grain plane of hard coal. The method proposed for the removal of SO2 from combustion gases is quite different from the classical wet desulphurization methods. This solution eliminates the technically complicated wet desulphurization of exhausts: sulphur within the hard coal reacts with catalyst compounds, which enriches the ashes with sulphates. Technical research has shown that the DESONOX type catalyst causes the lowering of both sulphur dioxide and nitrogen oxide emission from the exhaust coming from combusting the solid fuels. This document presents only the DESOX reactions using the DESONOX type catalysts. This paper reports on the studies concerning the methods of the DESONOX catalysts preparation and their influence on the amount of the generated sewage and on the catalytic activity of a number of DESONOX catalysts (during the course of the DESOX reaction). The results of the research on the influence of the catalysts physicochemical properties on their activity are also reported.