Activity of monolithic Pd/Al2O3 catalysts in the combustion of mine ventilation air methane

• Autorzy: Kucharczyk B.
• Języki publikacji: EN

Abstrakty

EN

The activity of Pd/Al2O3 catalysts increases when Pd content is increased from 1% to 2%. Among these catalysts, 2%Pd/Al2O3 shows the highest methane combustion activity. In a reduced form, the catalyst displays a higher activity than in the oxidized form. 24-hour ageing at 600oC to 800oC lowers the catalytic activity of 2%Pd/Al2O3 due to Pd crystallite sintering. After 110-hour oxidation of 1% methane in air over 2%Pd/Al2O3, conversion decreases from 100% to 88%. Upon reduction with hydrogen (performed after 24-hour ageing at 700oC and 110-hour methane oxidation), the 2%Pd/Al2O3 catalyst regains its initial activity. The high activity of Pd catalysts renders them suitable for methane removal from coal mine ventilation air at high gas fl ow velocities and temperatures lower than 600oC.

Słowa kluczowe

EN

catalytic oxidation of methane; monolithic catalysts; mine ventilation air

PL

katalityczne utlenianie metanu; katalizatory monolityczne; powietrze wentylacyjne kopalni

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2011
• Tom: Vol. 13, nr 4
• Strony: 57--62
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Kucharczyk B.

• Wrocław University of Technology, Institute of Inorganic Technology and Mineral Fertilizers, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland,

Bibliografia

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