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Miniaturized catalysis: monolithic, highly porous, large surface area capillary flow reactors constructed in situ from polyhedral oligomeric silsesquioxanes (POSS).

Scholder P, Nischang I - Catal Sci Technol (2015)

Bottom Line: A single-step molding process utilizing free-radical cross-linking reaction of vinyl POSS in microliter-sized dimensions leads to hierarchically-structured, mechanically robust, porous hybrid structures.Functional variants show excellent performance in Suzuki-type coupling reactions.Due to their small volume, long-term operational robustness, and potential chemical diversity, these materials are promising candidates for catalyst screening applications.

View Article: PubMed Central - PubMed

Affiliation: Institute of Polymer Chemistry , Johannes Kepler University Linz , A-4060 , Leonding , Austria . Email: ivo.nischang@jku.at.

ABSTRACT

A single-step molding process utilizing free-radical cross-linking reaction of vinyl POSS in microliter-sized dimensions leads to hierarchically-structured, mechanically robust, porous hybrid structures. Functional variants show excellent performance in Suzuki-type coupling reactions. Due to their small volume, long-term operational robustness, and potential chemical diversity, these materials are promising candidates for catalyst screening applications.

No MeSH data available.


Energy-dispersive X-ray spectroscopy (EDX) analysis of cross-sections of porous materials with the pristine and reactor variants (Scheme 1).
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fig2: Energy-dispersive X-ray spectroscopy (EDX) analysis of cross-sections of porous materials with the pristine and reactor variants (Scheme 1).

Mentions: To indicate the existence of chelated palladium on the internal structure of the highly porous material according to Scheme 1, the as-prepared and washed reactors were analyzed by energy-dispersive X-ray spectroscopy (EDX) on their cross-sections. The results in Fig. 2 clearly confirm the existence of sulfur, indicating successful thiol-ene addition, as well as Pd and Cl functionalities indicating successful Pd chelation for catalysts 1 and 2 (Scheme 1). These signals are totally absent for the pristine material.


Miniaturized catalysis: monolithic, highly porous, large surface area capillary flow reactors constructed in situ from polyhedral oligomeric silsesquioxanes (POSS).

Scholder P, Nischang I - Catal Sci Technol (2015)

Energy-dispersive X-ray spectroscopy (EDX) analysis of cross-sections of porous materials with the pristine and reactor variants (Scheme 1).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4530614&req=5

fig2: Energy-dispersive X-ray spectroscopy (EDX) analysis of cross-sections of porous materials with the pristine and reactor variants (Scheme 1).
Mentions: To indicate the existence of chelated palladium on the internal structure of the highly porous material according to Scheme 1, the as-prepared and washed reactors were analyzed by energy-dispersive X-ray spectroscopy (EDX) on their cross-sections. The results in Fig. 2 clearly confirm the existence of sulfur, indicating successful thiol-ene addition, as well as Pd and Cl functionalities indicating successful Pd chelation for catalysts 1 and 2 (Scheme 1). These signals are totally absent for the pristine material.

Bottom Line: A single-step molding process utilizing free-radical cross-linking reaction of vinyl POSS in microliter-sized dimensions leads to hierarchically-structured, mechanically robust, porous hybrid structures.Functional variants show excellent performance in Suzuki-type coupling reactions.Due to their small volume, long-term operational robustness, and potential chemical diversity, these materials are promising candidates for catalyst screening applications.

View Article: PubMed Central - PubMed

Affiliation: Institute of Polymer Chemistry , Johannes Kepler University Linz , A-4060 , Leonding , Austria . Email: ivo.nischang@jku.at.

ABSTRACT

A single-step molding process utilizing free-radical cross-linking reaction of vinyl POSS in microliter-sized dimensions leads to hierarchically-structured, mechanically robust, porous hybrid structures. Functional variants show excellent performance in Suzuki-type coupling reactions. Due to their small volume, long-term operational robustness, and potential chemical diversity, these materials are promising candidates for catalyst screening applications.

No MeSH data available.