Inorganic Molten Salts as Solvents for Cellulose

  title={Inorganic Molten Salts as Solvents for Cellulose},
  author={Stefan Fischer and Heike Leipner and Katrin Th{\"u}mmler and Erica Brendler and Jana Peters},
Inorganic molten salts can be used as efficient solvents for cellulose in a wide range of degrees of polymerization. Furthermore, molten salts can be applied as reaction medium for the derivatization of cellulose. For both dissolution and derivatization of cellulose, knowledge of the solution state as well as information about chemical interactions with the solvent system is essential. Using the melts of LiClO4·3H2O, NaSCN/KSCN/LiSCN·2H2O and LiCl/ZnCl2/H2O as cellulose solvents, factors which… 
The role of salt on cellulose dissolution in ethylene diamine/salt solvent systems
Ethylene diamine (EDA)/salt solvent systems can dissolve cellulose without any pretreatment. A comparison of the electrical conductivity of different salts in EDA was made at 25 °C, and conductivity
Cellulose Hydrolysis in Acidified LiBr Molten Salt Hydrate Media
We screened nine acidified molten salt hydrates (solutions with water to salt molar ratio equal or less than the coordination number of the cation) as reaction media for cellulose hydrolysis, and we
Design of Ionic Liquids for Cellulose Dissolution
  • T. Itoh
  • Materials Science, Chemistry
  • 2014
Cellulose consists of linear glucose polymer chains that form a very tight hydrogen-bonded supramolecular structure making it highly resistant to enzymatic degradation. The ionic liquid,
High enhancement of the hydrolysis rate of cellulose after pretreatment with inorganic salt hydrates
We study the use of inorganic salt hydrates as solvents in the dissolution/precipitation pretreatment of cellulose. The dissolution of cellulose was very fast (15 min in some cases) at the low
Dissolution of cellobiose in the aqueous solutions of chloride salts: Hofmeister series consideration
The effects of chloride salts on the dissolution of cellobiose in aqueous solution were investigated using calorimetry and 1H NMR. The dissolution of cellobiose in salt solutions is a typical
A study of ionic liquids for dissolution of sugarcane bagasse
Over the last decade, Ionic Liquids (ILs) have been used for the dissolution and derivatization of isolated cellulose. This ability of ILs is now sought for their application in the selective
Zinc chloride aqueous solution as a solvent for starch.


Structural changes of cellulose dissolved in molten salt hydrates
The behavior of cellulose in molten salt hydrates, e.g., LiClO 4 *3H 2 O, ZnCl 2 *4H 2 O, LiCl*5H 2 O and mixtures of thiocyanates was investigated. Melts, which give rise to a swelling or
Solubility and Dissolved Cellulose in Aqueous Calcium- and Sodium-Thiocyanate Solution
Attempt was made to investigate the solubility and the dissolved state of various celluloses in aqueous (aq) calcium- and sodium-thiocyanate solution. Almost all celluloses used in this study were
7Li NMR as probe for solvent–cellulose interactions in cellulose dissolution
Molten salt hydrates proved to be alternative solvents to cellulose. Toinvestigate the reasons for this dissolving ability, information about thesolvent–cellulose interactions is essential. As well
Aqueous Calcium Thiocyanate Solution as a Cellulose Solvent. Structure and Interactions with Cellulose
Dissolution of cellulose into aqueous (aq) calcium thiocyanate solution was investigated with emphasis on solvent structure and interactions with cellulose. The aq calcium thiocyanate (Ca(SCN)2)
Cellulose hydrolysis using zinc chloride as a solvent and catalyst
Cellulose gel with < 10% of crystallinity was prepared by treatment of microcrystalline cellulose, Avicel, with zinc chloride solution at a ratio of zinc chloride to cellulose from 1.5 to 18 (w/w).
The porous structure of cellulose gel regenerated from calcium thiocyanate solution
Structural Changes in Wood Pulp Treated by 55 wt% Aqueous Calcium Thiocyanate Solution
Attempt was made to clarify the structural change of wood pulp during the treatment of concentrated aqueous (aq) calcium thiocyanate (aq Ca(SCN)2) solution at room temperature. For this purpose,
Determination of the substituent pattern of heterogeneously and homogeneously synthesized carboxymethyl cellulose by using high-performance liquid chromatography
A rapid and convenient procedure was developed for the determination of the substituent pattern of carboxymethyl cellulose (CMC) by means of high-performance liquid chromatography. The hydrolysates
The behaviour of cellulose in hydrated melts of the composition LiXċn H2O (X=I−, NO3−, CH3COO−, ClO4−)
The dissolution behaviour of cellulose in low temperature molten salts was investigated. Depending on the chosen anions in the melt, cellulose shows different reaction behaviour in different
Studies on the synthesis and characterization of carboxymethylcellulose
Carboxymethylcellulose (CMC) was prepared in a completely heterogeneous procedure in an isopropanol/water slurry and the influence of the reaction conditions on the pattern of functionalization