Porous metal complexes for CO2 capturing
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Date
2017
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Publisher
University of the Western Cape
Abstract
The need in energy has resulted in the burning of fossil fuels at an increasingly high level.
The consequence is a release of high volumes of carbon dioxide gas (CO2) in the atmosphere.
This gas is a major greenhouse gas which causes global warming. There is therefore a great
need to efficiently sequestrate this gas (CO2) for a sustainable economic development and
environment. A new class of metal organic frameworks (MOFs) is a promising high potential
application in carbon dioxide capture. In the current study, synthetic methods were developed for the design of porous cobalt
succinates and nickel hydroxy-terephthalates for CO2 adsorption. The methods developed and
interrogated include, sonication, hydrothermal synthesis (at room temperature, reflux and
Parr reactor), and microwave synthesis. The conventional cobalt chloride hexahydrate was
substituted by cobalt acetate for synthesis at room temperature. Cobalt acetate was used to
replace cobalt chloride in the synthesis of cobalt succinate at room temperature and led to a
new cobalt succinate complex (CoS-Ac). The complexe CoS-Ac differs from CoS
synthesized from cobalt chloride hexahydrate. Synthesis of cobalt succinate via sonication
(CoS-sn) was achieved in 45 min and the structure of the complex was different when
synthesized via the hydrothermal route (under reflux) abbreviated CoS-th.
Description
Magister Scientiae - MSc (Chemistry)