铁、铬、镍、锆氧化物二元吸附剂对氯化钙的吸附特性

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2022-01-01 DOI:10.36807/1998-9849-2022-61-87-16-21

Y. Fedorov, V. Samonin, Kristina A. Zaporozhets, Anastasiya V. Gavretskaya, Anastasiya A. Shestel

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摘要

对比研究了Fe2O3、NiO、Cr2O3和ZrO2对CaCl2的吸附，以及由混合氧化物以1:1的摩尔比制备的二元吸附剂对CaCl2的吸附。用数学建模的方法说明了二元吸附剂表面新活性中心的形成。这些活性中心并不是二元氧化物中单个氧化物活性中心的机械总和。在相对较低的CaCl2浓度(小于3 g/dm3)下，二元吸附剂的吸附性能比单个氧化物的添加量有最大的提高。

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FEATURES OF CALCIUM CHLORIDE ADSORPTION BY BINARY SORBENTS BASED ON IRON, CHROMIUM, NICKEL AND ZIRCONIUM OXIDES

Comparative studies of the sorption of CaCl2 by Fe2O3, NiO, Cr2O3 and ZrO2, as well as binary sorbents obtained from mixed oxides at a molar ratio of 1 : 1 were carried out. The formation of new active centers on the surface of binary sorbents was shown by using the method of mathematical modeling. Those active centers are not the mechanical sum of the active centers of individual oxides that are part of binary ones. The greatest increase in the sorption properties of binary sorbents compared with the additive sum of individual oxides is observed at relatively low concentrations of CaCl2 less than 3 g/dm3.

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Bulletin of the Saint Petersburg State Institute of Technology (Technical University)

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