Ovsienko O.L.

Fine-Dispersed Iron (III) Oxyhydroxides Synthesis: Carbamide Precipitation

The conditions of carbamide precipitation synthesis of fine-dispersed iron (III) oxyhidroxides from iron (III) sulphate and nitrate solutions were found out. In order to determine the necessary precipitant amount potentiometric precipitation titration of iron (III) sulphate and nitrate solutions with ammonia and hydrolyzed carbamide solutions were carried out. The results of these researches are expounded.

The effect of caesium compounds on the properties of the low-temperature catalyst of carbon monoxide converstion. Caesium nitrate promotion

This paper describes the effect of promoting Cs admixtures on the catalyst activity, selectivity, stability, crystal structure and morphology of Cu-Zn-Alcatalyst of low-temperature CO conversion. We also test two methods to introduce the promoter:into calcinated, as well as into the carbonate catalyst mass. We determine that the introduction of Cs in the amount of 1% and 3 % allows reducing the catalyst activity in a side reaction of methanol formation by 3 and 6 times.

The influence of caesium compounds on the properties of the low-temperature catalyst of carbon monoxide converstion. caesium formiate promotion

This paper studies the influence of promoting admixtures of the Cs formiate on the catalyst activity, selectivity, stability, crystal structure and morphology of Cu-Zn-Al catalyst of low-temperature CO conversion. We test two methods of introducing the promoter, notably into the calcinated as well as into the carbonate catalyst mass. On the experimental side, we determine that Cs introduction in the amount of 1 % allows reducing the catalyst activity in a side reaction of methanol formation by 2–2,5 times.