scholarly journals Esterification and hydrolysis of cellulose using oxalic acid dihydrate in a solvent-free reaction suitable for preparation of surface-functionalised cellulose nanocrystals with high yield

2017 ◽  
Vol 19 (23) ◽  
pp. 5564-5567 ◽  
Author(s):  
D. Li ◽  
J. Henschen ◽  
M. Ek
Keyword(s):  
Oxalic Acid ◽  
Cellulose Nanocrystals ◽  
Solvent Free ◽  
High Yield ◽  
Simple Process ◽  
Oxalic Acid Dihydrate ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of ◽  
Solvent Free Reaction

A quick and simple process to prepare surface-functionalised cellulose nanocrystals.

Rapid, high-yield production of lignin-containing cellulose nanocrystals using recyclable oxalic acid dihydrate

2021 ◽  
Vol 173 ◽  
pp. 114148
Author(s):  
Jungang Jiang ◽  
Yeling Zhu ◽  
Shiva Zargar ◽  
Jie Wu ◽  
Hale Oguzlu ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Cellulose Nanocrystals ◽  
High Yield ◽  
Oxalic Acid Dihydrate ◽  
Yield Production ◽  
High Yield Production

Simple Process To Produce High-Yield Cellulose Nanocrystals Using Recyclable Citric/Hydrochloric Acids

2019 ◽  
Vol 7 (5) ◽  
pp. 4912-4923 ◽  
Author(s):  
Houyong Yu ◽  
Somia Yassin Hussain Abdalkarim ◽  
Heng Zhang ◽  
Chuang Wang ◽  
Kam Chiu Tam
Keyword(s):  
Cellulose Nanocrystals ◽  
High Yield ◽  
Simple Process

Conversion of Cellulose to High Yield Glucose in Water over Sulfonated Mesoporous Carbon Fibers with Optimized Acidity

2021 ◽  
Author(s):  
Ying Yang ◽  
Shuai Shao ◽  
Feng Yang ◽  
Dale L. Brewe ◽  
Shangwei Guo ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Mesoporous Carbon ◽  
High Yield ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

Hydrolysis of cellulose to high yield glucose in water remains challenging owing to the limited acidity and contact to substrate for sulfonated carbons. Herein, we report a unique sulfonated mesoporous...

ChemInform Abstract: Oxalic Acid Dihydrate: A Reusable and Cost-Effective Catalyst for the Synthesis of Bis(indolyl)methanes under Solvent-Free Conditions.

ChemInform ◽  
2008 ◽  
Vol 39 (51) ◽  
Author(s):  
Minoo Dabiri ◽  
Mostafa Baghbanzadeh ◽  
Seyedeh C. Azimi ◽  
Shaghayegh Ahmadzadeh-Asl ◽  
Reza R. Ardestani
Keyword(s):  
Oxalic Acid ◽  
Cost Effective ◽  
Solvent Free ◽  
Oxalic Acid Dihydrate ◽  
Effective Catalyst ◽  
Solvent Free Conditions

scholarly journals An Efficient Method for Synthesis of N-tert-Butyl Amides Using Oxalic Acid Dihydrate in Solvent-Free Condition

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Masoud Mokhtary ◽  
Seyedeh Khadijeh Nasernezhad
Keyword(s):  
Oxalic Acid ◽  
Efficient Method ◽  
Butyl Acetate ◽  
Solvent Free ◽  
Free Condition ◽  
Oxalic Acid Dihydrate ◽  
Tert Butyl ◽  
Solvent Free Condition

An efficient method for the synthesis of N-tert-butyl amides by reaction of nitriles with tert-butyl acetate or tert-butanol is described using oxalic acid dihydrate in solvent-free condition. The result showed that tert-butyl acetate served as a relatively better source of tert-butyl carbocation than tert-butanol.

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.

Manufacture of cellulose nanocrystals by cation exchange resin-catalyzed hydrolysis of cellulose

2011 ◽  
Vol 102 (23) ◽  
pp. 10973-10977 ◽  
Author(s):  
Li-rong Tang ◽  
Biao Huang ◽  
Wen Ou ◽  
Xue-rong Chen ◽  
Yan-dan Chen
Keyword(s):  
Cation Exchange ◽  
Cellulose Nanocrystals ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

scholarly journals Impact of tensile and compressive forces on hydrolysis of cellulose and chitin

2021 ◽  
Author(s):  
Hirokazu Kobayashi ◽  
Yusuke Suzuki ◽  
Takuya Sagawa ◽  
Kyoichi Kuroki ◽  
Jun-ya Hasegawa ◽  
...  
Keyword(s):  
Solvent Free ◽  
Reaction Pathways ◽  
Selective Hydrolysis ◽  
Thermal Reactions ◽  
Unique Reaction ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

Mechanochemistry enables unique reaction pathways in comparison to conventional thermal reactions. Notably, it can achieve selective hydrolysis of cellulose and chitin, a set of abundant and recalcitrant biomass, by solvent-free...

Comprehensive utilization strategy of cellulose in a facile, controllable, high-yield preparation process of cellulose nanocrystals using aqueous tetrabutylphosphonium hydroxide

2021 ◽  
Author(s):  
Fangchao Cheng ◽  
Panpan Zhao ◽  
Tulong Ouyang ◽  
Jianping Sun ◽  
Yiqiang Wu
Keyword(s):  
Enzymatic Hydrolysis ◽  
Cellulose Nanocrystals ◽  
High Yield ◽  
Utilization Rate ◽  
Preparation Process ◽  
Comprehensive Utilization ◽  
High Utilization ◽  
Hydrolysis Of ◽  
Utilization Strategy

Tetrabutylphosphonium hydroxide treatment of cellulose enabled facile, controllable, high-yield preparation of cellulose nanocrystals and effective enzymatic hydrolysis of cellulosic residue, resulting in a high utilization rate of more than 95%.

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