Comprehensive morphological and structural investigation of cellulose I and II nanocrystals prepared by sulphuric acid hydrolysis

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 76017-76027 ◽  
Author(s):  
Wilson Pires Flauzino Neto ◽  
Jean-Luc Putaux ◽  
Marcos Mariano ◽  
Yu Ogawa ◽  
Harumi Otaguro ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Structural Investigation ◽  
Wood Pulp ◽  
Cellulose I ◽  
Eucalyptus Wood ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

CNCs were produced from eucalyptus wood pulp by (i) classical sulphuric acid hydrolysis, (ii) acid hydrolysis of cellulose previously mercerized by alkali, (iii) solubilization of cellulose in sulphuric acid and subsequent recrystallization in water.

Supramolecular Structure Characterization of Cellulose II Nanowhiskers Produced by Acid Hydrolysis of Cellulose I Substrates

2012 ◽  
Vol 13 (2) ◽  
pp. 570-578 ◽  
Author(s):  
Gilles Sèbe ◽  
Frédérique Ham-Pichavant ◽  
Emmanuel Ibarboure ◽  
Akissi Lydie Chantal Koffi ◽  
Philippe Tingaut
Keyword(s):  
Acid Hydrolysis ◽  
Supramolecular Structure ◽  
Structure Characterization ◽  
Cellulose Ii ◽  
Cellulose I ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

The synthesis of Cyclododecane-r-1,c-5,c-9-triamine and r-1,c-5,c-9-Tris(2,3-dimethoxybenzamido)cyclododecane

1975 ◽  
Vol 28 (3) ◽  
pp. 673 ◽  
Author(s):  
DJ Collins ◽  
C Lewis ◽  
JM Swan
Keyword(s):  
Aqueous Solution ◽  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Sodium Carbonate ◽  
Sodium Azide ◽  
Room Temperature ◽  
Dimethyl Formamide ◽  
Lithium Aluminium Hydride ◽  
Lithium Aluminium ◽  
Hydrolysis Of

Treatment of cyclododecane-r-1,c-5,c-9-triyl tris(p-toluenesulphonate) with sodium azide in dimethyl-formamide at 100� for 6 h gave the corresponding cis,cis-triazide which upon hydrogenation or reduction with lithium aluminium hydride gave cyclododecane-r-1,c-5,c-9-triamine, isolated as the tris-salicylidene derivative. Acid hydrolysis of this, removal of the salicylaldehyde, and treatment of the aqueous solution with sodium carbonate and 2,3-dimethoxybenzoyl chloride gave r-1,c-5,c- 9-tris(2,3-dimethoxybenzamido)cyclododecane. ��� Treatment of (E,E,E)-cyclododeca-1,5,9-triene with an excess of acetonitrile and sulphuric acid at room temperature for three days gave 18% of (E,E)-1-acetamidocyclododeca-4,8-diene; no di- or tri-amides were isolated.

scholarly journals Acid Hydrolysis of Cellulose as the Entry Point into Biorefinery Schemes

ChemSusChem ◽  
2010 ◽  
Vol 3 (3) ◽  
pp. 296-296 ◽  
Author(s):  
Roberto Rinaldi ◽  
Ferdi Schüth
Keyword(s):  
Acid Hydrolysis ◽  
Entry Point ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

HYDROLYSIS OF CELLULOSE ACETATE SULPHATE IN ACETONE

1954 ◽  
Vol 32 (9) ◽  
pp. 815-822 ◽  
Author(s):  
Karl Keirstead ◽  
John Myers
Keyword(s):  
Acetic Acid ◽  
Cellulose Acetate ◽  
Sulphuric Acid ◽  
Potentiometric Titration ◽  
Titration Method ◽  
Acetate Ester ◽  
Hydrolysis Of Cellulose ◽  
Potentiometric Titration Method ◽  
Hydrolysis Of

When cellulose acetate sulphate is dissolved in acetone the hydrolysis of the sulphate ester is rapid compared with that of the acetate ester. In 70% acetone the relative rates are reversed. Hydrolysis of the sulphate ester in acetone is greatly affected by the temperature. At 25 °C. or greater the hydrolysis is complete after 24 hr. A potentiometric titration method has been developed for the estimation of sulphuric acid in the presence of smaller amounts of acetic acid.

scholarly journals New methods of acid hydrolysis of cellulose and plant raw materials

2021 ◽  
Vol 57 (1) ◽  
pp. 119-128
Author(s):  
V. S. Boltovsky
Keyword(s):  
Acid Hydrolysis ◽  
Plant Biomass ◽  
Raw Materials ◽  
Agricultural Waste ◽  
Feed Additives ◽  
Process Conditions ◽  
Catalytic Systems ◽  
Plant Raw Materials ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

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. 

Hemtacetal formation in sulphuric acid hydrolysis of a chloro olefin

1973 ◽  
Vol 14 (8) ◽  
pp. 585-588 ◽  
Author(s):  
E.P. Woo ◽  
K.T. Mak ◽  
H.N.C. Wong
Keyword(s):  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Hydrolysis Of

Kinetic studies of two-stage sulphuric acid hydrolysis of sugarcane bagasse

2015 ◽  
Vol 83 ◽  
pp. 850-858 ◽  
Author(s):  
Sachin Kumar ◽  
Pratibha Dheeran ◽  
Surendra P. Singh ◽  
Indra M. Mishra ◽  
Dilip K. Adhikari
Keyword(s):  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Sugarcane Bagasse ◽  
Kinetic Studies ◽  
Two Stage ◽  
Hydrolysis Of
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