Hybrid Catalysts for Acetylenes Polymerization Prepared by Anchoring [Rh(cod)Cl]2 on MCM-41, MCM-48 and SBA-15 Mesoporous Molecular Sieves - The Effect of Support Structure on Catalytic Activity in Polymerization of Phenylacetylene and 4-ethynal- N-(4-[t

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F03%3A54030166" target="_blank" >RIV/61388955:_____/03:54030166 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Hybrid Catalysts for Acetylenes Polymerization Prepared by Anchoring [Rh(cod)Cl]2 on MCM-41, MCM-48 and SBA-15 Mesoporous Molecular Sieves - The Effect of Support Structure on Catalytic Activity in Polymerization of Phenylacetylene and 4-ethynal- N-(4-[t

Popis výsledku v původním jazyce

Hybrid catalysts for acetylenes polymerizations were prepared by anchoring [Rh(cod)Cl]2 complex on siliceous mesoporous molecular sieves differing in pore size and architecture (MCM-41, MCM-48 and SBA-15) via 3-aminopropyltrimethoxysilane linker. In comparison with [Rh(cod)Cl]2 used as homogeneous catalyst, all hybrid catalysts exhibited comparable or even higher catalytic activity in the polymerization of phenylacetylene and N-(4-trimethylsilylethynylbenzylidene)-4-ethynylaniline. The initial polymerization rate increased with increasing accessibility of mesoporous surface of catalysts in order of support: MCM-41< MCM-48 < SBA-15. Molecular weights of polymer prepared increased in reverse order of supports suggesting the space limitations in the poressuppress the chain growth termination reactions. No effect of catalyst support on the microstructure of formed polymers was found.

Název v anglickém jazyce

Hybrid Catalysts for Acetylenes Polymerization Prepared by Anchoring [Rh(cod)Cl]2 on MCM-41, MCM-48 and SBA-15 Mesoporous Molecular Sieves - The Effect of Support Structure on Catalytic Activity in Polymerization of Phenylacetylene and 4-ethynal- N-(4-[t

Popis výsledku anglicky

Hybrid catalysts for acetylenes polymerizations were prepared by anchoring [Rh(cod)Cl]2 complex on siliceous mesoporous molecular sieves differing in pore size and architecture (MCM-41, MCM-48 and SBA-15) via 3-aminopropyltrimethoxysilane linker. In comparison with [Rh(cod)Cl]2 used as homogeneous catalyst, all hybrid catalysts exhibited comparable or even higher catalytic activity in the polymerization of phenylacetylene and N-(4-trimethylsilylethynylbenzylidene)-4-ethynylaniline. The initial polymerization rate increased with increasing accessibility of mesoporous surface of catalysts in order of support: MCM-41< MCM-48 < SBA-15. Molecular weights of polymer prepared increased in reverse order of supports suggesting the space limitations in the poressuppress the chain growth termination reactions. No effect of catalyst support on the microstructure of formed polymers was found.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Collection of Czechoslovak Chemical Communications

ISSN

0010-0765

e-ISSN

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Svazek periodika

68

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

16

Strana od-do

1861-1876

Kód UT WoS článku

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EID výsledku v databázi Scopus

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