نتایج جستجو برای: selective separation
تعداد نتایج: 318588 فیلتر نتایج به سال:
This review paper shows the dominant role of cyclodextrins in chiral separations using capillary columns (GC, SFC, CE). The (CDs) have extremely broad selectivity spectra because they several different recognition sites various arrangements and interaction modes. Their features can further improve with their substitutions. selectivities are moderate therefore need high efficiency (capillary col...
Ferromagnetic [Ni5(H2TCPP)2O(H2O)4]·nS exhibits selective adsorption towards cationic dyes in solution and gas separation calculations predict promising values for mixtures.
Separation methods used in organic chemistry are briefly reviewed, emphasis being placed on aspects that are frequently ignored, and special attention being paid to the analytical applications of separation. The relevance of physical, inorganic and analytical chemistry for organic chemistry is stressed. The term 'separation' can be used in analytical chemistry in both a literal and figurative s...
Xylene isomers are crucial chemical intermediates in great demand worldwide; the almost identical physicochemical properties render their current separation approach energy consuming. In this study, we utilized soft porous coordination polymer (PCP)’s isomer-specific structural transformation, realizing o-xylene (oX) recognition/separation from binary and ternary isomer mixtures. This PCP has a...
چکیده ندارد.
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...
The catalytic selective oxidation of isobutane to methacrolein (MAC) and methacrylic acid (MAA) is known proceed via a Mars-Van Krevelen mechanism. When the reaction performed in common reactor with co-feeding reactant oxygen, reactive oxygen species are present on catalyst surface whereby non-selective reactions occur. In this work, we studied possibility decouple redox mechanism meaning separ...
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