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Nitric oxide adsorption and release isotherms at 25 °C on zeolite 4A and on different titanosilicates using a gravimetric apparatus. (a) NO adsorption kinetic profiles performed at 80 kPa and (b) NO release kinetics in the gas phase using high vacuum. The values released are related to the amount of NO adsorbed by each material. Results from titanosilicates were taken from previous works [17,18].
