Matches in SemOpenAlex for { <https://semopenalex.org/work/W1984590987> ?p ?o ?g. }
Showing items 1 to 95 of
95
with 100 items per page.
- W1984590987 abstract "Abstract Copper(II) complexes of poly(styrene-co-N-vinylimidazole) (Cu(II)-PS-im) were immobilized on modified silica by quaternization or on unmodified silica by adsorption and these immobilized polymer-bound complexes were applied as catalysts for oxidative coupling polymerization of 2,6-dimethylphenol (DMP) in toluene / methanol (13 / 2 v / v). Higher average chain loading (α) of PS-im with imidazole groups, e.g. a ⩾ 17%, was essential for successful adsorption. A main role of hydroxide appears to be production of more reactive phenolate anions from DMP. A rise in reaction rate was not observed for high ligand / Cu, which probably resulted from too high viscosity of the silica suspension at high ligand / Cu. In a batch process under comparable conditions both types of immobilized polymer catalysts were found to have the same preference for poly-2,6-dimethyl-1,4-phenyleneoxide formation as non-immobilized Cu(II)-PS-im and their low molar mass analogue. However, they were five times less active than non-immobilized ones, which was explained primarily in terms of a reduced effective ligand / Cu ratio after the immobilization of polymeric ligands. Application of both types of immobilized polymer catalysts in a continuous stirred tank reactor (CSTR) for oxidative coupling of 2,6-di-tert-butylphenol was successful. A stable phenol conversion was obtained in CSTR under suitable conditions for at least 120 hours." @default.
- W1984590987 created "2016-06-24" @default.
- W1984590987 creator A5017541508 @default.
- W1984590987 creator A5022229528 @default.
- W1984590987 date "1991-01-01" @default.
- W1984590987 modified "2023-09-27" @default.
- W1984590987 title "Studies on immobilized polymer-bound imidazole copper(II) complexes as catalysts. Part II. immobilization of copper(II) complexes of poly(styrene-co-n-vinylimidazole) by quaternization or adsorption on silica and their catalyses of oxidative coupling of 2,6-disubstituted phenols" @default.
- W1984590987 cites W1924047206 @default.
- W1984590987 cites W1987928326 @default.
- W1984590987 cites W2000750191 @default.
- W1984590987 cites W2016563969 @default.
- W1984590987 cites W2034379786 @default.
- W1984590987 cites W2034888024 @default.
- W1984590987 cites W2041026769 @default.
- W1984590987 cites W2070249633 @default.
- W1984590987 cites W2074394103 @default.
- W1984590987 cites W2085161010 @default.
- W1984590987 cites W2094017478 @default.
- W1984590987 cites W2099977144 @default.
- W1984590987 cites W2103218763 @default.
- W1984590987 cites W2116526863 @default.
- W1984590987 cites W2119374117 @default.
- W1984590987 cites W2119648406 @default.
- W1984590987 cites W2145583863 @default.
- W1984590987 cites W2147682945 @default.
- W1984590987 cites W2166547630 @default.
- W1984590987 doi "https://doi.org/10.1016/0923-1137(91)90248-m" @default.
- W1984590987 hasPublicationYear "1991" @default.
- W1984590987 type Work @default.
- W1984590987 sameAs 1984590987 @default.
- W1984590987 citedByCount "4" @default.
- W1984590987 crossrefType "journal-article" @default.
- W1984590987 hasAuthorship W1984590987A5017541508 @default.
- W1984590987 hasAuthorship W1984590987A5022229528 @default.
- W1984590987 hasConcept C116569031 @default.
- W1984590987 hasConcept C150394285 @default.
- W1984590987 hasConcept C15920480 @default.
- W1984590987 hasConcept C161790260 @default.
- W1984590987 hasConcept C170493617 @default.
- W1984590987 hasConcept C178790620 @default.
- W1984590987 hasConcept C179104552 @default.
- W1984590987 hasConcept C185592680 @default.
- W1984590987 hasConcept C188027245 @default.
- W1984590987 hasConcept C2777566558 @default.
- W1984590987 hasConcept C2779607525 @default.
- W1984590987 hasConcept C2780874372 @default.
- W1984590987 hasConcept C44228677 @default.
- W1984590987 hasConcept C521977710 @default.
- W1984590987 hasConcept C544778455 @default.
- W1984590987 hasConcept C55493867 @default.
- W1984590987 hasConcept C83155894 @default.
- W1984590987 hasConceptScore W1984590987C116569031 @default.
- W1984590987 hasConceptScore W1984590987C150394285 @default.
- W1984590987 hasConceptScore W1984590987C15920480 @default.
- W1984590987 hasConceptScore W1984590987C161790260 @default.
- W1984590987 hasConceptScore W1984590987C170493617 @default.
- W1984590987 hasConceptScore W1984590987C178790620 @default.
- W1984590987 hasConceptScore W1984590987C179104552 @default.
- W1984590987 hasConceptScore W1984590987C185592680 @default.
- W1984590987 hasConceptScore W1984590987C188027245 @default.
- W1984590987 hasConceptScore W1984590987C2777566558 @default.
- W1984590987 hasConceptScore W1984590987C2779607525 @default.
- W1984590987 hasConceptScore W1984590987C2780874372 @default.
- W1984590987 hasConceptScore W1984590987C44228677 @default.
- W1984590987 hasConceptScore W1984590987C521977710 @default.
- W1984590987 hasConceptScore W1984590987C544778455 @default.
- W1984590987 hasConceptScore W1984590987C55493867 @default.
- W1984590987 hasConceptScore W1984590987C83155894 @default.
- W1984590987 hasLocation W19845909871 @default.
- W1984590987 hasOpenAccess W1984590987 @default.
- W1984590987 hasPrimaryLocation W19845909871 @default.
- W1984590987 hasRelatedWork W1504930976 @default.
- W1984590987 hasRelatedWork W1963496985 @default.
- W1984590987 hasRelatedWork W1964875004 @default.
- W1984590987 hasRelatedWork W1968915939 @default.
- W1984590987 hasRelatedWork W1972959486 @default.
- W1984590987 hasRelatedWork W1983035209 @default.
- W1984590987 hasRelatedWork W1988127937 @default.
- W1984590987 hasRelatedWork W2005944496 @default.
- W1984590987 hasRelatedWork W2012326986 @default.
- W1984590987 hasRelatedWork W2014004826 @default.
- W1984590987 hasRelatedWork W2035849135 @default.
- W1984590987 hasRelatedWork W2039368095 @default.
- W1984590987 hasRelatedWork W2052538617 @default.
- W1984590987 hasRelatedWork W2055983475 @default.
- W1984590987 hasRelatedWork W2056330863 @default.
- W1984590987 hasRelatedWork W2085865709 @default.
- W1984590987 hasRelatedWork W2093279806 @default.
- W1984590987 hasRelatedWork W2136099044 @default.
- W1984590987 hasRelatedWork W2198248383 @default.
- W1984590987 hasRelatedWork W2036696579 @default.
- W1984590987 isParatext "false" @default.
- W1984590987 isRetracted "false" @default.
- W1984590987 magId "1984590987" @default.
- W1984590987 workType "article" @default.