Manganese- and iron-porphyrins embedded in a polydimethylsiloxane membrane: a selective oxidation catalyst

Chiral Salen Complexes: An Overview to Recoverable and Reusable Homogeneous and Heterogeneous Catalysts

“…Jacobs's group has been working on catalyst immobilization in poly(dimethylsiloxane) (PDMS) membranes. − PDMS membranes can be easily obtained by cross-linking vinyl-substituted dimethylsiloxane prepolymeric chains through hydrosilylation (Scheme ). Mechanical resistance, swelling, and porosity are some of the PDMS membrane properties that can be controlled in the polymerization process by selecting appropriately the substituted precursor chains that will end up in an adequate degree of cross-linking.…”

Polymeric Membranes in Catalytic Reactors

“…Spectroscopic evidence showed that TMCs are incorporated in PDMS without disturbance of their structure and free of electronic interactions between the central metal ion and the surrounding polymer. 58…”

“…When this membrane was used in reactions, a complete decoloration of the membrane occurred within few minutes, indicating the oxidation of one complex by another. 57,58 The dispersion problems were case specific and not always so detrimental. With the related TDCPP(Mn)-Cl complex in PDMS (Scheme 14), oxidation reactions could be performed successfully.…”

Speciation of aqueous Ni(II)-carboxylate and Ni(II)-fulvic acid solutions: Combined ATR-FTIR and XAFS analysis

“…Metal-organic molecule interactions play a vital role in a number of chemical phenomena of interest, including mineral weathering, biologic acquisition of metals and their enzyme activity, environmental fate and toxicity, homogeneous and heterogeneous catalysis, materials synthesis, and contaminant treatment (Karlin, 1993;Gawel et al, 1996;Buerge and Hug, 1998;Ferry and Glaze, 1998;Hudson, 1998;Neys et al, 1998;Alcacio et al, 2001;Penn et al, 2001;Chen and Hsieh, 2002). Of different organic ligands that occur in the environment, carboxylates constitute the dominant fraction.…”