THE PRESENCE OF MONOTHIOCARBONATE SUBSTITUENTS IN CELLULOSE XANTHATES

1960 ◽  
Vol 38 (8) ◽  
pp. 1381-1394 ◽  
Author(s):  
D. A. Andrews ◽  
F. G. Hurtubise ◽  
H. Krässig

The presence of monothiocarbonate substituents in viscose has been demonstrated by the infrared spectra of the gases evolved during the acid hydrolysis of cellulose xanthate salts and viscose. A comparison of the results of various methods of sulphur determination and the results obtained by ultraviolet spectroscopy has been made. The results of investigations on sodium cellulose monothiocarbonate preparations support the concept of monothiocarbonate substitution.


ChemSusChem ◽  
2010 ◽  
Vol 3 (3) ◽  
pp. 296-296 ◽  
Author(s):  
Roberto Rinaldi ◽  
Ferdi Schüth


Author(s):  
V. S. Boltovsky

Prospects for the development of hydrolysis production are determined by the relevance of industrial use of plant biomass to replace the declining reserves of fossil organic raw materials and increasing demand for ethanol, especially for its use as automobile fuel, protein-containing feed additives that compensate for protein deficiency in feed production, and other products. Based on the review of the research results presented in the scientific literature, the analysis of modern methods of liquid-phase acid hydrolysis of cellulose and various types of plant raw materials, including those that differ from traditional ones, is performed. The main directions of increasing its efficiency through the use of new catalytic systems and process conditions are identified. It is shown that the most promising methods for obtaining monosaccharides in hydrolytic processing of cellulose and microcrystalline cellulose, pentosan-containing agricultural waste and wood, are methods for carrying out the process at elevated and supercritical temperatures (high-temperature hydrolysis), the use of new types of solid-acid catalysts and ionic liquids. 





Catalysts ◽  
2017 ◽  
Vol 7 (8) ◽  
pp. 231 ◽  
Author(s):  
Satoshi Horikoshi ◽  
Takashi Minagawa ◽  
Shuntaro Tsubaki ◽  
Ayumu Onda ◽  
Nick Serpone


1972 ◽  
Vol 16 (3) ◽  
pp. 556-561 ◽  
Author(s):  
Nance D. Kunz ◽  
John L. Gainer ◽  
James L. Kelly




1956 ◽  
Vol 20 (94) ◽  
pp. 205-208 ◽  
Author(s):  
E. H. Daruwalla ◽  
G. M. Nabar


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