65 research outputs found
Experiências em pré-melhoramento de mandioca: utilização do potencial de espécies silvestres de mandioca como fonte de resistência a estresses bióticos e abióticos
Development of low-cost technologies for pyramiding useful genes from wild relatives of cassava into elite progenitors
Impact of Ionic Liquid Structure and Loading on Gas Sorption and Permeation for ZIF-8-Based Composites and Mixed Matrix Membranes
Carbon dioxide (CO2) capture has become of great importance for industrial processes due
to the adverse environmental effects of gas emissions. Mixed matrix membranes (MMMs) have been
studied as an alternative to traditional technologies, especially due to their potential to overcome
the practical limitations of conventional polymeric and inorganic membranes. In this work, the
effect of using different ionic liquids (ILs) with the stable metal–organic framework (MOF) ZIF-8
was evaluated. Several IL@ZIF-8 composites and IL@ZIF-8 MMMs were prepared to improve the
selective CO2 sorption and permeation over other gases such as methane (CH4) and nitrogen (N2).
Different ILs and two distinct loadings were prepared to study not only the effect of IL concentration,
but also the impact of the IL structure and affinity towards a specific gas mixture separation. Single
gas sorption studies showed an improvement in CO2/CH4 and CO2/N2 selectivities, compared with
the ones for the pristine ZIF-8, increasing with IL loading. In addition, the prepared IL@ZIF-8 MMMs
showed improved CO2 selective behavior and mechanical strength with respect to ZIF-8 MMMs,
with a strong dependence on the intrinsic IL CO2 selectivity. Therefore, the selection of high affinity
ILs can lead to the improvement of CO2 selective separation for IL@ZIF-8 MMMsinfo:eu-repo/semantics/publishedVersio
Desenvolvimento, crescimento e produtividade de mandioca em diferentes datas de plantio em região subtropical
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