Porous organic ligands (POLs) for synthesizing highly efficient heterogeneous catalysts

Abstract

We reported a universal route for synthesizing porous organic ligands (POLs) via solvothermal polymerization. The POLs were obtained quantitatively, showing high surface area, large pore volume, hierarchical porosity, and superior stability. The POL bearing a triphenylphosphine supported rhodium catalyst (Rh/POL-PPh3) exhibits high activity and excellent recyclability in 1-octene hydroformylation.

Metalated porous porphyrin polymers as efficient heterogeneous catalysts for cycloaddition of epoxides with CO2 under ambient conditions

“…For instance, Rh metalated porous organic ligand polymers of triphenylphosphine (POL-PPh 3 ) as heterogeneous catalysts exhibit not only comparable activities and selectivities to those of the homogeneous counterparts in olefin hydroformylations but also extraordinary recyclabilities [49]. It is also shown that the metalated (Fe and Mn) porous organic polymers (POPs) containing free-base porphyrin subunits by the condensation of a bis(phthalic acid)porphyrin with tetra(4-aminophenyl)methane [50] are very active catalysts in both olefin epoxidation and alkane hydroxylation.…”

Ultrastable 3V-PPh3 polymers supported single Rh sites for fixed-bed hydroformylation of olefins

“…The 504 h time onstream performance showed no apparent drop in activity and selectivity, demonstrating the excellent catalyst stability. The high l/b ratio of aldehydes may originate from the shape-selectivity imposed by the 0.7-1.5 nm micropores present in the Rh/POL-PPh 3 catalyst [25].…”

“…POL-PPh 3 was prepared according to the method reported previously [25]. Rh/POL-PPh 3 and HRh(CO)(PPh 3 ) 3 /POL-PPh 3 catalysts were prepared, respectively.…”

“…In our previous work, 3V-PPh 3 polyhttp://dx.doi.org/10.1016/j.molcata.2015.05.008 1381-1169/© 2015 Elsevier B.V. All rights reserved. mer (POL-PPh 3 ), possessing high thermal stability, high BET surface area and hierarchical porosity, was synthesized through solvothermal polymerization of vinyl-functionalized PPh 3 (3V-PPh 3 ), and supported Rh/POL-PPh 3 catalyst has been developed for hydroformylation of 1-octene with excellent performance [25]. However, the chemical nature and structure property of the Rh/POL-PPh 3 catalyst have not been understood profoundly, owing to characterizing amorphous non-soluble POPs immobilized metal species catalysts is definitely the greatest challenge in POP-based catalysis nowadays [23,24].…”

A Polymer‐Bound Monodentate‐P‐Ligated Palladium Complex as a Recyclable Catalyst for the Suzuki–Miyaura Coupling Reaction of Aryl Chlorides

“…[10] We now hope to employ this polymer as as upporting ligand for palladium-catalyzed Suzuki-Miyaurac ross-coupling reactions.P OL-Ph 3 P is an ew type of three-fold cross-linked polymerbound phosphine [11] and can be prepared through solvothermalp olymerization of tris(p-vinylphenyl)phosphine in the absence of styrene and divinylbenzene (see Scheme1). Compared with polystyrene-supported phosphine,t his novelp hosphine possesses am uch higher Pc ontent ande nhances metal binding ability.…”