iPhoneAlle anzeigen
iPhone 11iPhone 11 ProiPhone 11 Pro MaxiPhone 12iPhone 12 ProiPhone 12 Pro MaxiPhone 12 miniiPhone 13iPhone 13 ProiPhone 13 Pro MaxiPhone 13 miniiPhone 14iPhone 14 PlusiPhone 14 ProiPhone 14 Pro MaxiPhone 15iPhone 15 PlusiPhone 15 ProiPhone 15 Pro MaxiPhone 16iPhone 16 PlusiPhone 16 ProiPhone 16 Pro MaxiPhone 16eiPhone 8iPhone 8 PlusiPhone SE 2020iPhone SE 2022iPhone XiPhone XRiPhone XSiPhone XS Max
Galaxy A-SerieAlle anzeigen
Galaxy A12Galaxy A13Galaxy A13 5GGalaxy A14Galaxy A15Galaxy A16Galaxy A17 5GGalaxy A20eGalaxy A21Galaxy A22Galaxy A23Galaxy A24Galaxy A25Galaxy A26 5GGalaxy A32Galaxy A33Galaxy A34Galaxy A35Galaxy A36 5GGalaxy A40Galaxy A41Galaxy A42Galaxy A50Galaxy A51Galaxy A52Galaxy A53Galaxy A54Galaxy A55Galaxy A56 5GGalaxy A70Galaxy A71Galaxy A72
Redmi SeriesAlle anzeigen
Redmi 10Redmi 13CRedmi 15 5GRedmi Note 10Redmi Note 10 ProRedmi Note 11Redmi Note 11 ProRedmi Note 11 Pro Plus 5GRedmi Note 11sRedmi Note 12Redmi Note 12 5GRedmi Note 12 ProRedmi Note 12 Pro 5GRedmi Note 12 Pro PlusRedmi Note 13Redmi Note 13 5GRedmi Note 13 ProRedmi Note 13 Pro PlusRedmi Note 14Redmi Note 14 Pro PlusRedmi Note 8Redmi Note 8 ProRedmi Note 9Redmi Note 9 Pro
- Startseite
Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Chemie Organische Chemie Synthesis of cellulose derivatives in ionic liquids
Derzeit nicht verfügbar
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Synthesis of cellulose derivatives in ionic liquids
Wei Leng (Broschiert, Englisch)
★★★★★
☆☆☆☆☆ Keine Bewertungen vorhanden
Optischer Zustand
Beschreibung
The imidazolium based ionic liquids as a new class of solvents for cellulose have been used for modification reactions under homogeneous conditions. Reactions of cellulose have been investigated in solutions in 1-butyl-3-methylimidazolium chloride (BMIMCl), acetate (BMIMOAc) and in 1-butyl-2,3-dimethylimidazolium chloride (BMMIMCl).
A novel drying method for the imidazolium based ionic liquids… has been developed. Water was removed with hexamethyldisilazane as silylating agent, which allowed to remove ammonia and hexamethyldisiloxane from imidazolium chlorides. Other imidazolium salts, in particular the carboxylates, could be purified by molecular distillation. Pure samples of nondistillable ionic liquids have been synthesized by anion exchange of distilled imidazolium acetates.
Modification reactions of cellulose studied were acetalization, silylation, desilylation, carbanilation and hydrolytic degradation.
Cellulose acetals have been synthesized from reactions of vinyl ethers with cellulose and cellulose derivatives. Distilled imidazolium acetates were very efficient reaction media for complete silylation of cellulose with hexamethyldisilazane. Desilylation of trimethylsilyl cellulose has been achieved with water alone, sterically demanding 1,1,2-trimethylpropylsilyl cellulose could be completely desilylated with potassium hydrogen fluoride in ionic liquids. Carbanilation of cellulose with phenyl isocyanate could be carried out in BMIMCl. Controlled degradation of cellulose at 150 °C in the imidazolium chlorides has been investigated and a hydrolytic mechanism has been proved. Dieses Produkt haben wir gerade leider nicht auf Lager.
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
01.06.2008
Sprache
Englisch
EAN
9783832273040
Herausgeber
Shaker
Serien- oder Bandtitel
Berichte aus der Chemie
Sonderedition
Nein
Autor
Wei Leng
Seitenanzahl
142
Auflage
1
Einbandart
Broschiert
Schlagwörter
Silylation, Cellulose, Vinyl ethers, Desilylation, BMIMC1
Thema-Inhalt
PNN - Organische Chemie
Höhe
210 mm
Breite
14.8 cm
-.-
★★★★★
☆☆☆☆☆ Leider noch keine Bewertungen
Leider noch keine Bewertungen
Sicher bei rebuy kaufen
Schreib die erste Bewertung für dieses Produkt!
Wenn du eine Bewertung für dieses Produkt schreibst, hilfst du allen Kund:innen, die noch überlegen, ob sie das Produkt kaufen wollen. Vielen Dank, dass du mitmachst!
Sicher bei rebuy kaufen