scholarly journals Kinetic Study on the Acid-Catalyzed Hydrolysis of Cellulose to Levulinic Acid

2007 ◽  
Vol 46 (6) ◽  
pp. 1696-1708 ◽  
Author(s):  
B. Girisuta ◽  
L. P. B. M. Janssen ◽  
H. J. Heeres
Keyword(s):  
Kinetic Study ◽  
Levulinic Acid ◽  
Hydrolysis Of Cellulose ◽  
Acid Catalyzed ◽  
Hydrolysis Of

scholarly journals Acid-Catalyzed Conversion of Cellulose Into Levulinic Acid With Biphasic Solvent System

2021 ◽  
Vol 12 ◽  
Author(s):  
Changyue Ma ◽  
Bo Cai ◽  
Le Zhang ◽  
Junfeng Feng ◽  
Hui Pan
Keyword(s):  
Levulinic Acid ◽  
Value Added ◽  
Acid Catalyst ◽  
Solvent System ◽  
High Yield ◽  
Catalyst Loading ◽  
Amberlyst 15 ◽  
Hydrolysis Of Cellulose ◽  
Acid Catalyzed ◽  
Hydrolysis Of

In this work, acid-catalyzed conversion of cellulose into levulinic acid in a biphasic solvent system was developed. Compared to a series of catalysts investigated in this study, the Amberlyst-15 as a more efficient acid catalyst was used in the hydrolysis of cellulose and further dehydration of derived intermediates into levulinic acid. Besides, the mechanism of biphasic solvent system in the conversion of cellulose was studied in detail, and the results showed biphasic solvent system can promote the conversion of cellulose and suppress the polymerization of the by-products (such as lactic acid).The reaction conditions, such as temperature, time, and catalyst loading were changed to investigate the effect on the yield of levulinic acid. The results indicated that an appealing LA yield of 59.24% was achieved at 200°C and 180 min with a 2:1 ratio of Amberlyst-15 catalyst and cellulose in GVL/H2O under N2 pressure. The influence of different amounts of NaCl addition to this reaction was also investigated. This study provides an economical and environmental-friendly method for the acid-catalyzed conversion of cellulose and high yield of the value-added chemical.

Benzyl ethers of methyl α-D-glucopyranoside

1980 ◽  
Vol 45 (7) ◽  
pp. 1959-1963 ◽  
Author(s):  
Dušan Joniak ◽  
Božena Košíková ◽  
Ludmila Kosáková
Keyword(s):  
Kinetic Study ◽  
Spectrophotometric Determination ◽  
Reductive Cleavage ◽  
Ether Bond ◽  
Benzyl Ethers ◽  
Acid Catalyzed ◽  
Model Substances ◽  
Hydrolysis Of

Methyl 4-O-(3-methoxy-4-hydroxybenzyl) and methyl 4-O-(3,5-dimethoxy-4-hydroxybenzyl)-α-D-glucopyranoside and their 6-O-isomers were prepared as model substances for the ether lignin-saccharide bond by reductive cleavage of corresponding 4,6-O-benzylidene derivatives. Kinetic study of acid-catalyzed hydrolysis of the compounds prepared was carried out by spectrophotometric determination of the benzyl alcoholic groups set free, after their reaction with quinonemonochloroimide, and it showed the low stability of the p-hydroxybenzyl ether bond.

Characteristics of Solid Super Acid SO42-/TiO2-Al2O3-SnO2 during Conversion of Glucose to Levulinic Acid

2012 ◽  
Vol 550-553 ◽  
pp. 103-106
Author(s):  
Ying Liu ◽  
Lu Lin ◽  
Xiao Yu Sui ◽  
Jun Ping Zhuang ◽  
Chun Sheng Pang
Keyword(s):  
Binding Energy ◽  
Levulinic Acid ◽  
Diffraction Peak ◽  
Catalyst Amount ◽  
Hydroxymethyl Furfural ◽  
Good Catalytic Activity ◽  
Super Acid ◽  
Diffraction Peaks ◽  
Acid Catalyzed ◽  
Hydrolysis Of

The effects of catalyst amount on the yields of levulinic and hydroxymethyl furfural were investigated during conversion of glucose to levulinic acid catalyzed by solid super acid SO42- / TiO2-Al2O3-SnO2. XRD and XPS were used to analyse the characteristics of solid super acid SO42- / TiO2-Al2O3-SnO2 before reaction and after reaction. The results showed that: solid super acid SO42- / TiO2-Al2O3-SnO2exhibited good catalytic activity in the reaction of hydrolysis of glucose to produce levulinic acid. There were three obvious peaks in these XRD spectra. The peaks on 44.6° and 67.1° were the characteristic diffraction peaks of γ-Al2O3. The anatase characteristic diffraction peak was on 37.4°. The catalyst was steady in the process. The binding energy of S 2p was similar to the binding energy of standard S6+ 2p in the S 2p XPS spectrum of solid super acid. O 1s XPS was double-peaked spectrum. The increase of element C was the main reason of inactivation of catalyst.

Kinetic study of the hydrolysis of cellulose acetate in the pH range of 2–10

1966 ◽  
Vol 10 (5) ◽  
pp. 825-832 ◽  
Author(s):  
Kenneth D. Vos ◽  
Floyd O. Burris ◽  
Robert L. Riley
Keyword(s):  
Kinetic Study ◽  
Cellulose Acetate ◽  
Hydrolysis Of Cellulose ◽  
Ph Range ◽  
Hydrolysis Of

Heterogeneous Acid-Catalyzed Hydrolysis of Cellulose

2012 ◽  
Vol 512-515 ◽  
pp. 421-425
Author(s):  
Jia Xin Liu ◽  
Yu Dong Huang
Keyword(s):  
Fossil Fuel ◽  
Solid Acid ◽  
Cellulosic Biomass ◽  
Biomass Hydrolysis ◽  
Key Technology ◽  
Selective Transformation ◽  
Hydrolysis Of Cellulose ◽  
Acid Catalyzed ◽  
Effective Use ◽  
Hydrolysis Of

With the world’s focus on reducing our dependency on fossil fuel resources, one of the challenges will be the development of efficient catalysts for selective transformation of cellulosic biomass. Hydrolysis of cellulose to glucose is a key technology for effective use of lignocellulose because glucose can be efficiently converted into various chemicals, biofuels, foods, and medicines. Thus far, substantial efforts have been devoted to the degradation of cellulose but these processes have significant drawbacks. Some of these problems can potentially be overcome with the application of solid acid catalysts. In this paper, recent studies on heterogeneous acid-catalyzed hydrolysis of cellulose are summarized.

Catalytic hydrolysis of cellulose to levulinic acid by partly replacing sulfuric acid with Nafion® NR50 catalyst

2019 ◽  
Vol 9 (3) ◽  
pp. 609-616 ◽  
Author(s):  
Yongjun Xu ◽  
Guiheng Liu ◽  
Jinxia Fu ◽  
Shimin Kang ◽  
Yukui Xiao ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Levulinic Acid ◽  
Catalytic Hydrolysis ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

scholarly journals The effect of pretreatment on methanesulfonic acid-catalyzed hydrolysis of bagasse to levulinic acid, formic acid, and furfural

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74525-74535 ◽  
Author(s):  
Darryn W. Rackemann ◽  
John P. Bartley ◽  
Mark D. Harrison ◽  
William O. S. Doherty
Keyword(s):  
Formic Acid ◽  
Levulinic Acid ◽  
Methanesulfonic Acid ◽  
Acid Catalyzed ◽  
Hydrolysis Of
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