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Изучение сорбционной способности соединния сr-mil-101 по отношению к ионам меди

Изучение сорбционной способности соединния сr-mil-101 по отношению к ионам меди

Abstract

Sorption properties of the metalloorganic coordination polymer (MCP) on the basis of a tereftalat of Cr-MIL-101 chrome (III) in relation to copper (II) ions are studied. Influence рН on a charge of the taken ion, and also equilibrium parameters of sorption (the full static exchange capacity (FSEC), distribution coefficient, selectivity coefficient) is defined. It is shown that MKP can be applied in processes of sorption concoction of copper (II) from water solutions in wide area рН, but the greatest capacity of a sorbent is observed at pH=8. This supervision can be explained with introduction in large cavities of a framework of metalloorganic polymer of mix of polynuclear ions (Cu2(OH)22+, Cu2(OH)3+, Cu3(OH)42+) and the oligomers of molecular oxidic clusters of copper. This assumption is confirmed by experimentally established total fractional charge of the taken particles, and also data of the electronic microscopic analysis of cupriferous samples of a sorbent. Results of work allow to consider metalcomplex Cr-MIL-101 polymer as a sorbent carrier of large hydrolytic forms of copper.

Изучены сорбционные свойства металлоорганического координационного полимера (МКП) на основе терефталата хрома (III) Cr-MIL-101 по отношению к ионам меди (II). Определено влияние рН среды на заряд извлекаемого иона, а также равновесные параметры сорбции (полная статическая обменная емкость (ПСОЕ), коэффициент распределения, коэффициент селективности). Показано, что МКП может применяться в процессах сорбционного концентрирования меди (II) из водных растворов в широкой области рН, но наибольшая емкость сорбента наблюдается при рН=8. Данное наблюдение можно объяснить внедрением в крупные полости каркаса металлоорганического полимера смеси полиядерных ионов (Cu2(OH)22+, Cu2(OH)3+, Cu3(OH)42+) и олигомерных молекулярных оксидных кластеров меди. Это предположение подтверждается экспериментально установленным суммарным дробным зарядом извлекаемых частиц, а также данными электронного микроскопического анализа медьсодержащих образцов сорбента. Результаты работы позволяют рассматривать металлокомплексный полимер Cr-MIL-101 в качестве сорбента-носителя крупных гидролизных форм меди.

Keywords

СОРБЦИЯ,ПОЛНАЯ СТАТИЧЕСКАЯ ОБМЕННАЯ ЕМКОСТЬ,ЗАРЯД ИОНОВ,КОЭФФИЦИЕНТ СЕЛЕКТИВНОСТИ,ТИТРИМЕТРИЧЕСКИЙ АНАЛИЗ,SORPTION,FULL OF STATIC EXCHANGE CAPACITY,THE ION CHARGE,THE COEFFICIENT OF SELECTIVITY,TITRIMETRIC ANALYSIS

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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