Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007880438> ?p ?o ?g. }
Showing items 1 to 94 of
94
with 100 items per page.
- W2007880438 endingPage "547" @default.
- W2007880438 startingPage "541" @default.
- W2007880438 abstract "Polymerizations of propylene oxide (PO) have been carried out by using double metal cyanide (DMC) catalyst prepared by reacting ZnCl2 and K3[Co(CN)6] in the presence of tert-butyl alcohol as a complexing agents. The DMC catalyst of the molecular formula, Zn2.3Cl1.0[Co(CN)6]1.0·2.0 tBuOH·1.0H2O, is characterized by gas sorption measurements, infrared spectroscopy and X-ray powder diffraction. The structure of DMC catalyst with negligible surface area and broadened X-ray diffraction peaks is different from that of Prussian blue analogue, Zn3[Co(CN)6]2·12H2O of microporous crystalline materials. The PO polymerization behavior is tunable by combining it with various imidazolium based ionic liquids (ILs) as external additives. Thus, (1) they make the zinc-monomer bond faster activated during the initial stage of polymerization, (2) they make the zinc-monomer bond more active, (3) they stabilize the polymerization centers and prevent their decomposition, and (4) they improve important polymer properties such as molecular weight, viscosity and unsaturation level. The maximum rate of polymerization (Rp,max) of DMC catalyst increases from 2587 to 27,222 g-polymer/g-cat h by combining with 1-ethyl-3-methylimidazolium chloride (emimCl, [emimCl]/[Zn] = 1.25) at 115 °C. The induction period as the time to reach Rp,max becomes short from 321 min for DMC catalyst to 29 min for DMC/emimCl binary catalyst. The unsaturation value of polyol (0.017 mequiv./g) produced by DMC decreases to 0.005 mequiv./g by simply combining with IL. The molecular weight polyol produced by DMC catalyst increases from Mn = 3700 to more than 6000, and the viscosity of polyol decreases by combining with ILs." @default.
- W2007880438 created "2016-06-24" @default.
- W2007880438 creator A5023471832 @default.
- W2007880438 creator A5042992274 @default.
- W2007880438 creator A5049093097 @default.
- W2007880438 creator A5079070649 @default.
- W2007880438 creator A5082869373 @default.
- W2007880438 date "2008-02-01" @default.
- W2007880438 modified "2023-10-14" @default.
- W2007880438 title "Tuning of the activity and induction period of double metal cyanide catalyzed ring-opening polymerizations of propylene oxide by using ionic liquids" @default.
- W2007880438 cites W1480994531 @default.
- W2007880438 cites W1550844284 @default.
- W2007880438 cites W1963852020 @default.
- W2007880438 cites W1977432889 @default.
- W2007880438 cites W1986164181 @default.
- W2007880438 cites W1988952104 @default.
- W2007880438 cites W2002913022 @default.
- W2007880438 cites W2019010263 @default.
- W2007880438 cites W2026280407 @default.
- W2007880438 cites W2043856179 @default.
- W2007880438 cites W2050755459 @default.
- W2007880438 cites W2075612646 @default.
- W2007880438 cites W2088875383 @default.
- W2007880438 cites W2155694667 @default.
- W2007880438 cites W2163623272 @default.
- W2007880438 cites W2495679119 @default.
- W2007880438 doi "https://doi.org/10.1016/j.cattod.2007.10.067" @default.
- W2007880438 hasPublicationYear "2008" @default.
- W2007880438 type Work @default.
- W2007880438 sameAs 2007880438 @default.
- W2007880438 citedByCount "22" @default.
- W2007880438 countsByYear W20078804382012 @default.
- W2007880438 countsByYear W20078804382013 @default.
- W2007880438 countsByYear W20078804382015 @default.
- W2007880438 countsByYear W20078804382016 @default.
- W2007880438 countsByYear W20078804382017 @default.
- W2007880438 countsByYear W20078804382019 @default.
- W2007880438 countsByYear W20078804382020 @default.
- W2007880438 countsByYear W20078804382021 @default.
- W2007880438 countsByYear W20078804382022 @default.
- W2007880438 countsByYear W20078804382023 @default.
- W2007880438 crossrefType "journal-article" @default.
- W2007880438 hasAuthorship W2007880438A5023471832 @default.
- W2007880438 hasAuthorship W2007880438A5042992274 @default.
- W2007880438 hasAuthorship W2007880438A5049093097 @default.
- W2007880438 hasAuthorship W2007880438A5079070649 @default.
- W2007880438 hasAuthorship W2007880438A5082869373 @default.
- W2007880438 hasConcept C154881586 @default.
- W2007880438 hasConcept C15920480 @default.
- W2007880438 hasConcept C161790260 @default.
- W2007880438 hasConcept C166940927 @default.
- W2007880438 hasConcept C178790620 @default.
- W2007880438 hasConcept C179104552 @default.
- W2007880438 hasConcept C185592680 @default.
- W2007880438 hasConcept C188027245 @default.
- W2007880438 hasConcept C2777505466 @default.
- W2007880438 hasConcept C2777801237 @default.
- W2007880438 hasConcept C44228677 @default.
- W2007880438 hasConcept C521977710 @default.
- W2007880438 hasConcept C54175244 @default.
- W2007880438 hasConceptScore W2007880438C154881586 @default.
- W2007880438 hasConceptScore W2007880438C15920480 @default.
- W2007880438 hasConceptScore W2007880438C161790260 @default.
- W2007880438 hasConceptScore W2007880438C166940927 @default.
- W2007880438 hasConceptScore W2007880438C178790620 @default.
- W2007880438 hasConceptScore W2007880438C179104552 @default.
- W2007880438 hasConceptScore W2007880438C185592680 @default.
- W2007880438 hasConceptScore W2007880438C188027245 @default.
- W2007880438 hasConceptScore W2007880438C2777505466 @default.
- W2007880438 hasConceptScore W2007880438C2777801237 @default.
- W2007880438 hasConceptScore W2007880438C44228677 @default.
- W2007880438 hasConceptScore W2007880438C521977710 @default.
- W2007880438 hasConceptScore W2007880438C54175244 @default.
- W2007880438 hasIssue "1-4" @default.
- W2007880438 hasLocation W20078804381 @default.
- W2007880438 hasOpenAccess W2007880438 @default.
- W2007880438 hasPrimaryLocation W20078804381 @default.
- W2007880438 hasRelatedWork W1592072547 @default.
- W2007880438 hasRelatedWork W1967133635 @default.
- W2007880438 hasRelatedWork W2033265433 @default.
- W2007880438 hasRelatedWork W2074106907 @default.
- W2007880438 hasRelatedWork W2100703768 @default.
- W2007880438 hasRelatedWork W2323078905 @default.
- W2007880438 hasRelatedWork W2346601165 @default.
- W2007880438 hasRelatedWork W2488009843 @default.
- W2007880438 hasRelatedWork W3159946496 @default.
- W2007880438 hasRelatedWork W4230955574 @default.
- W2007880438 hasVolume "131" @default.
- W2007880438 isParatext "false" @default.
- W2007880438 isRetracted "false" @default.
- W2007880438 magId "2007880438" @default.
- W2007880438 workType "article" @default.