One step synthesis of fatty acid diethanolamides and methyl esters from triglycerides using sodium doped calcium hydroxide as a nanocrystalline heterogeneous catalyst

2015 ◽  
Vol 39 (9) ◽  
pp. 7097-7104 ◽  
Author(s):  
Dinesh Kumar ◽  
Soo Min Kim ◽  
Amjad Ali
Keyword(s):  
Fatty Acid ◽  
Calcium Hydroxide ◽  
Heterogeneous Catalyst ◽  
Vegetable Oils ◽  
Methyl Esters ◽  
One Step ◽  
Recyclable Heterogeneous Catalyst

A recyclable heterogeneous catalyst based direct aminolysis of vegetable oils.

scholarly journals An effective GC method for the determination of the fatty acid composition in silkworm pupae oil using a two-step methylation process

2015 ◽  
Vol 80 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Jun Wang ◽  
Weiwei Wu ◽  
Xudong Wang ◽  
Min Wang ◽  
Fuan Wu
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Methyl Esters ◽  
Superior Performance ◽  
Step Procedure ◽  
Silkworm Pupae ◽  
Chromatographic Procedure ◽  
One Step ◽  
Synthesis Yield

In search of an accurate and effective method to determine fatty acid composition in silkworm pupae oils, five methylation methods were evaluated for use in the gas chromatographic (GC) quantitation of fatty acid methyl esters (FAMEs), including one-step esterification catalyzed by an acidic (H2SO4 and BF3) or alkali catalyst (KOH and NaOCH3) and a two-step procedure catalyzed successively by KOH and H2SO4. These methods were comparatively adopted to quantify FAMEs in silkworm pupae oil using GC-MS and GC and then validate their precision, stability and average recovery rates. The results indicated that compared with the other four methyl esterification methods, two-step methylation effectively improves the synthesis yield of FAMEs, conserves agents, and eliminates the usage of potential harmful reagents. The proposed GC method has been validated, shows good accuracy and precision, and has been applied successfully to the quantification of FAMEs in several varieties of silkworm pupae oils. The short analytical run time leads to low costs and a fast chromatographic procedure. In summary, two-step pretreatment had superior performance, providing technical references for the determination and analysis of fatty acids in other oils.

Recent advances in the field of selective epoxidation of vegetable oils and their derivatives: a review and perspective

2017 ◽  
Vol 7 (17) ◽  
pp. 3659-3675 ◽  
Author(s):  
S. M. Danov ◽  
O. A. Kazantsev ◽  
A. L. Esipovich ◽  
A. S. Belousov ◽  
A. E. Rogozhin ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Vegetable Oils ◽  
Critical Review ◽  
Fatty Acid Methyl Esters ◽  
Recent Progress ◽  
Unsaturated Fatty Acids ◽  
Methyl Esters ◽  
Acid Methyl ◽  
Review Reports

The present critical review reports the recent progress of the last 15 years in the selective epoxidation of vegetable oils and their derivatives, in particular unsaturated fatty acids (UFAs) and fatty acid methyl esters (FAMEs).

scholarly journals Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels

2020 ◽  
Vol 12 (9) ◽  
pp. 168781402096235
Author(s):  
Misel J Sisi ◽  
M Rafiuddin Ahmed ◽  
David Rohindra
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Diesel Engine ◽  
Vegetable Oils ◽  
Methyl Esters ◽  
Cocos Nucifera ◽  
Capric Acid ◽  
Performance And Emission ◽  
Development Goals

The performance characteristics of the engine and the emission levels with Copra Oil (CPO), Virgin Coconut (cocos nucifera) Oil (VCO), Tamanu (calaphyllum inopyllum) Oil (TMO), and Nangae (canarium indicum) Oil (NGO) are presented. The oils, obtained from naturally grown trees in Vanuatu, were tested as straight vegetable oils (SVOs) in a Diesel engine and the results are compared with those of neat diesel. The oils were converted to their fatty-acid-methyl-esters (FAMEs) using gas chromatography to determine their fatty acid compositions. The brake thermal efficiency with SVOs was found to be comparable to diesel. The structure of the alkyl chain and the carbon-to-hydrogen ratio were also studied. All the oils have Palmitic acid, Capric acid, Caprylic acid, and Oleic acid as the major fatty acids. The CPO and VCO have higher amounts of Oleic acid, which acts as an additive and breaks up the interaction between the major fatty acids at higher temperatures, reducing the viscosity. Emissions of CO2 were lower while those of CO, NOx, and SO2 were higher with SVOs compared to diesel. The results indicate that the local SVOs are good and inexpensive substitute fuels for Vanuatu that can help the country meet the UN’s sustainable development goals.

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