Kinetics of nitrobenzene hydrogenation on spongy nickel and catalyst with supported palladium in 2-propanol aqueous solutions with acid or base additives


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The effect acetic acid and sodium hydroxide additives in a 2-propanol aqueous solution of azeotrope composition have on the rate of nitrobenzene (NB) hydrogenation over spongy nickel and supported palladium catalysts is studied. Analysis of the experimental data indicates that adding acid slows the rate more than adding a base during NB hydrogenation on spongy nickel. The observed rate for spongy nickel falls in a series of solvents: 2-propanol–water (0.68 mole fraction) > 2-propanol–water (0.68 mole fraction) + NaOH (0.01M) > 2-propanol–water (0.68 mole fraction) + CH3COOH (0.01 M). When a palladium catalyst is used, the addition of acid has less of an effect on slowing the rate of the reaction than that of the base: 2-propanol–water (0.68 mole fraction) > 2-propanol–water (0.68 mole fraction) + CH3COOH (0.01 M) > 2-propanol–water (0.68 mole fraction) + NaOH (0.01 M).

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Nguen Thu Ha

Hanoi Pedagogical University No. 2

编辑信件的主要联系方式.
Email: physchem@isuct.ru
越南, Hanoi, 28000

A. Latypova

Ivanovo State University of Chemistry and Technology

Email: physchem@isuct.ru
俄罗斯联邦, Ivanovo, 153460

E. Efremov

Ivanovo State University of Chemistry and Technology

Email: physchem@isuct.ru
俄罗斯联邦, Ivanovo, 153460

O. Lefedova

Ivanovo State University of Chemistry and Technology

Email: physchem@isuct.ru
俄罗斯联邦, Ivanovo, 153460

D. Filippov

Ivanovo State University of Chemistry and Technology

Email: physchem@isuct.ru
俄罗斯联邦, Ivanovo, 153460

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