Transitional metals immobilized by coordination on aminophosphonate functionalized copolymers and their catalytic properties

Synthesis of polyaminophosphonic acid-functionalized poly(glycidyl methacrylate) for the efficient sorption of La(III) and Y(III)

“…The final modification of TA-PGMA (occurring by reaction with phosphorous acid in the presence of formaldehyde) brings new P-based reactive groups. This is confirmed by the appearance of typical bands at 746 cm −1 , assigned to υ(eP]O), at 932 cm −1 , attributed to PeOeC stretching [53] or to P-OH stretching [54], at 1045 cm −1 , associated to PeOeR bond and at 1244 cm −1 , assigned to P]O bond [55]. These new peaks confirm the successful grafting of phosphorus-based reactive groups.…”

“…In the case of Y(III)-loaded sorbent, the spectrum is similar to the sorbent spectrum: the main changes concern the blue shift of the band at 503 cm −1 (moved to 531 cm −1 ; this corresponds to YeN bond), the disappearance of the peak at 932 cm −1 (PeOeC stretching), the shift of the peak at 1045 cm −1 (moved to 1074 cm −1 , with appearance of a peak at 1018 cm −1 ), and the appearance of a new peak at 633 cm −1 (usually associated to the formation of MeO bond) [53]. I n the case of Cu(I I ) and Mn(I I ) binding to aminophosphonate-based ligands, Popa et al [55] reported that the bands at 1050 cm −1 and 1250 cm −1 (P]O and PeOeC bonds) were also blue-shifted. Here, the band at 1250 cm −1 is not significantly affected by Y(I I I ) sorption.…”

Synthesis of α-aminophosphonate based sorbents – Influence of inserted groups (carboxylic vs. amine) on uranyl sorption

“…Indeed, these compounds have good metal-complexing properties that were widely used in water treatment, for the removal of radioactive and transition metals and for pollution control, at industrial scale [2][3][4][5]16]. More specifically, aminophosphonates have attracted continuous attention from the research community for the last decades [3,[17][18][19][20][21]. However, there is still a need for developing new materials based on this type of chemical structure with selective functionalities, excellent extraction properties and high stability.…”

Rhodium(i) diphenylphosphine complexes supported on porous organic polymers as efficient and recyclable catalysts for alkene hydrogenation

“…Both systems showed a decrease in the activity compared with the homogeneous catalysts which is a consequence of catalyst immobilization as was widely reported. 7,18,30,36,38,40,41,44,45,47 Despite this, both systems showed a similar product distribution as their homogenous equivalents. Fig.…”

“…Hybrid materials have become an excellent alternative for use as a support and/or catalyst in hydrogenation processes for ne chemicals because their organic/inorganic nature confers the ability to be used in very specic processes. [1][2][3][4][5] Some examples of hybrid materials are metal organic frameworks (MOFs), 6 hybrid-polymer resins, 7,8 clay-polymer composites, 9 among others. Especially in the use of synthetic hybrid-polymeric materials, Merrield resins arise as an attractive type of support for the covalent immobilization of coordination metal complexes catalysts for selective hydrogenation 10,11 due to their versatile surface functionalization.…”