Novel organosoluble filiform zirconium phosphonates with a layered mesoporous backbone

Chiral Salen Mn(III) Complex Axial Coordination Immobilized on Diamine Modified Alspp and Highly Efficient Large-Scale Epoxidation of Olefins as a Recoverable Catalyst

“…Other commercially available chemicals were laboratory-grade reagents from local suppliers. Chiral salen ligand and chiral homogeneous catalyst salenMn(III) were synthesized according to the standard literature procedures, and further identified by analysis and comparison of IR spectra with literature [25,26].…”

Olefin epoxidation catalyzed by Schiff base molybdenum (VI) complexes immobilized onto zirconium poly (styrene-phenylvinylphosphonate)-phosphate

“…The polymersupported catalysts also help in minimizing the contamination of reaction products with toxic transition metal complexes and help in recycling of the catalysts [1]. However, owing to the flexibility of polymers with linear and cross-linked structures, the active catalytic centers may be shielded and their catalytic properties will be lowered [3].…”

“…The polymersupported catalysts also help in minimizing the contamination of reaction products with toxic transition metal complexes and help in recycling of the catalysts [1]. However, owing to the flexibility of polymers with linear and cross-linked structures, the active catalytic centers may be shielded and their catalytic properties will be lowered [3].Zirconium phosphates and zirconium phosphonates are the subjects of continuing interesting in the field of materials chemistry [4,5]. One of the advantages for their use as catalysts or catalyst supports is that all of the organic groups in the zirconium phosphonates are located on the surface of the layers, the interlamellar region and interlayer surface no matter whether they are crystalline, semi-crystalline or amorphous, which results from their self-assembled layered structure with nanometer scale [6].…”

Synthesis of a layered crystalline AlSPP and reusable catalysts for epoxidation of unfunctionalized olefins

“…n H 2 O (where x was around 1) with a layered mesoporous backbone functionalized with chiral β‐amino alcohol has been reported. These hybrid zirconium hydroxide–phosphonates are soluble in toluene, chloroform, tetrahydrofuran and ethy lacetate, and immiscible in hexane, cyclohexane, petroleum ether and ethanol; thus the catalysts immobilized on these zirconium hydroxide–phosphonates can be used as homogeneous catalysts in soluble solvents and recovered from those immiscible solvents in 95–100% yield by precipitation …”