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Decomposition of hydrogen perodixe - kinetics and review of chosen catalysts

Pędziwiatr P., Mikołajczyk F., Zawadzki D., Mikołajczyk K., Bedka A.

Acta Innovations

2018

no. 26

45--52

Hydrogen peroxide is a chemical used in oxidation reactions, treatment of various inorganic and organic pollutants, bleaching processes in pulp, paper and textile industries and for various disinfection applications. It is a monopropellant, which, when purified, is self-decomposing at high temperatures or when a catalyst is present. Decomposing to yield only oxygen and water(disproportionation), hydrogen peroxide is one of the cleanest, most versatile chemicals available. The catalytic decomposition of hydrogen peroxide allows the use of various catalysts that will increase the rate of decomposition. Comparison and description of the most commonly used catalysts were presented in this review.

Study of oxidative coupling of methane integrated with CO oxidation

Michorczyk B., Hędrzak E.

Technical Transactions

2017

Vol. 2(114)

71--81

In this work, the process of OCM carried out over Mn-Na2WO4/SiO2 integrated with selective oxidation over Ag/support was investigated. The effect of feed gas composition and OCM bed temperature as well as the position of Ag/support bed and additional oxygen injection before this bed were investigated. At optimal OCM conditions for the Mn-Na2WO4/SiO2 catalyst (CH4/O2 = 3.75; Vtot = 77 cm3/min; T = 780°C), the injection of additional 4 cm3/min of oxygen into the bed of Ag/support (working at 250–300°C) leads to a preferential oxidation of CO to CO2.

W pracy zbadano proces OCM w obecności Mn-Na2WO4/SiO2 zintegrowany w jednym reaktorze z procesem selektywnego utleniania CO prowadzonym na katalizatorze Ag/nośnik. Zbadano wpływ zmiany parametrów prowadzenia procesu OCM, takich jak skład surowca i temperatury oraz efekt dodatku tlenu nad złoże Ag/nośnik. Wykazano, że w optymalnej temperaturze pracy złoża OCM (CH4/O2 = 3.75; Vtot = 77 cm3/min; T = 780°C) wprowadzenie dodatkowo 4 cm3/min tlenu nad złoże Ag/nośnik (pracującego w temp. 250–300°C) prowadzi do preferencyjnego utleniania CO do CO2.