Preparation of functionalized castor oil derivatives with tunable physical properties using heterogeneous acid and base catalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50289-50297 ◽  
Author(s):  
Sivashunmugam Sankaranarayanan ◽  
Kannan Srinivasan
Keyword(s):  
Physical Properties ◽  
Castor Oil ◽  
Ring Opening ◽  
Heterogeneous Catalysts ◽  
Base Catalysts ◽  
Acid And Base ◽  
Oil Derivatives ◽  
Epoxidized Castor Oil

Functionalized castor oil derivatives are achieved from epoxidized castor oil through ring opening and transesterification reactions using heterogeneous catalysts.

scholarly journals Chemocatalytic Production of Lactates from Biomass-Derived Sugars

2018 ◽  
Vol 2018 ◽  
pp. 1-18 ◽  
Author(s):  
Heng Zhang ◽  
Yulin Hu ◽  
Liying Qi ◽  
Jian He ◽  
Hu Li ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Heterogeneous Catalysts ◽  
Catalytic Performance ◽  
Green Solvents ◽  
Separation And Purification ◽  
Sustainable Resources ◽  
Base Catalysts ◽  
Heterogeneous Catalytic ◽  
Acid And Base ◽  
Relative Separation

In recent decades, a great deal of attention has been paid to the exploration of alternative and sustainable resources to produce biofuels and valuable chemicals, with aims of reducing the reliance on depleting confined fossil resources and alleviating serious economic and environmental issues. In line with this, lignocellulosic biomass-derived lactic acid (LA, 2-hydroxypropanoic acid), to be identified as an important biomass-derived commodity chemical, has found wide applications in food, pharmaceuticals, and cosmetics. In spite of the current fermentation of saccharides to produce lactic acid, sustainability issues such as environmental impact and high cost derived from the relative separation and purification process will be growing with the increasing demands of necessary orders. Alternatively, chemocatalytic approaches to manufacture LA from biomass (i.e., inedible cellulose) have attracted extensive attention, which may give rise to higher productivity and lower costs related to product work-up. This work presents a review of the state-of-the-art for the production of LA using homogeneous, heterogeneous acid, and base catalysts, from sugars and real biomass like rice straw, respectively. Furthermore, the corresponding bio-based esters lactate which could serve as green solvents, produced from biomass with chemocatalysis, is also discussed. Advantages of heterogeneous catalytic reaction systems are emphasized. Guidance is suggested to improve the catalytic performance of heterogeneous catalysts for the production of LA.

Ring opening, dimerisation and oligomerisation reactions of methyloxirane on solid acid and base catalysts

2004 ◽  
Vol 208 (1-2) ◽  
pp. 307-311 ◽  
Author(s):  
András Fási ◽  
István Pálinkó ◽  
Ágnes Gömöry ◽  
Imre Kiricsi
Keyword(s):  
Ring Opening ◽  
Solid Acid ◽  
Base Catalysts ◽  
Acid And Base

One-pot synthesis of furfural derivatives from pentoses using solid acid and base catalysts

2014 ◽  
Vol 4 (4) ◽  
pp. 971-978 ◽  
Author(s):  
Mahiro Shirotori ◽  
Shun Nishimura ◽  
Kohki Ebitani
Keyword(s):  
Solid Acid ◽  
Acid Base ◽  
One Pot ◽  
Amberlyst 15 ◽  
Base Catalysts ◽  
One Pot Synthesis ◽  
Combined Use ◽  
Acid And Base

One-pot synthesis of (2-furanylmethylene)malononitrile, a Knoevenagel product of furfural with malononitrile, from xylose efficiently proceeded by combined use of acid Amberlyst-15 and acid-base Cr/hydrotalcites in 44% yield.

Catalytic microwave pyrolysis of orange peel: Effects of acid and base catalysts mixture on products distribution

2021 ◽  
Author(s):  
Yanfang Zhu ◽  
Guiyang Xu ◽  
Wenqi Song ◽  
Yuzhen Zhao ◽  
Zongcheng Miao ◽  
...  
Keyword(s):  
Orange Peel ◽  
Microwave Pyrolysis ◽  
Base Catalysts ◽  
Acid And Base

Evaluating acid and base catalysts in the methylation of milk and rumen fatty acids with special emphasis on conjugated dienes and total trans fatty acids

Lipids ◽  
1997 ◽  
Vol 32 (11) ◽  
pp. 1219-1228 ◽  
Author(s):  
John K. G. Kramer ◽  
Vivek Fellner ◽  
Michael E. R. Dugan ◽  
Frank D. Sauer ◽  
Magdi M. Mossoba ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Trans Fatty Acids ◽  
Conjugated Dienes ◽  
Base Catalysts ◽  
Acid And Base

Acid and base catalyzed ring-opening polymerization of 2,2,4,4,6,6-hexamethyl-8,8-diphenylcyclotetrasiloxane

Polymer ◽  
2003 ◽  
Vol 44 (15) ◽  
pp. 4149-4155 ◽  
Author(s):  
Conan J Teng ◽  
William P Weber ◽  
Guoping Cai
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Acid And Base
Sign in / Sign up

Export Citation Format

Share Document