Catalytic Epoxidation of Soybean Oil Methyl Esters

2011 ◽  
Vol 396-398 ◽  
pp. 833-836 ◽  
Author(s):  
Xi Pu He ◽  
Xia Deng ◽  
Seng Sheng Wang ◽  
Jun Xiong ◽  
Yu Xiang Gu
Keyword(s):  
Soybean Oil ◽  
Raw Materials ◽  
Methyl Esters ◽  
Enzymatic Reactions ◽  
Plant Oil ◽  
Environment Friendly ◽  
Renewable Raw Materials ◽  
Catalytic Epoxidation ◽  
The Stability ◽  
Better Than

The plant oil-based epoxy materials are considered as environment-friendly, biodegradable, renewable raw materials, potentially replacing petrochemical-based epoxy materials in many fields. Soybean oil methyl esters (SOME) were epoxidized with Prileshajev and Chemo-enzymatic reactions. The highest epoxy oxirane achieved by Prileshajev epoxidation was only 4.42%, however, it could reach 5.63% by chemo-enzymatic epoxidation. The stability of oxirane by chemo-enzymatic epoxidation was better than that by Prileshajev epoxidation. The results showed that the chemo-enzymatic method was extremely efficient in the synthesis of epoxides from unsaturated methyl esters.

scholarly journals Epoxidized Methyl Esters and Triglycerides of Vegetable Oils Unsaturated Fatty Acids as New Reagents for the Preparation of Emulsifiers Based on Glycerol and Its Oligomers

2017 ◽  
Author(s):  
Khidmet Shikhaliev ◽  
Nadezhda Stolpovskaya ◽  
Michael Krysin ◽  
Anna Zorina ◽  
Denis Lyapun ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Unsaturated Fatty Acids ◽  
Raw Materials ◽  
Methyl Esters ◽  
New Combination ◽  
Renewable Raw Materials ◽  
Fatty Acid Derivatives ◽  
Oil Water ◽  
Complex Structural ◽  
Derivatives Of

Oligo- and polyesters of polyglycerol and polyricinoleic acid are widely used as emulsifiers in various industries. Based on the condensation of glycerol and its oligomers with epoxidized derivatives of vegetable oils, new promising emulsifiers for oil-water systems were obtained. Complex structural and functional spectral analysis of synthesized substances showed that the main reactions leading to the formation of the desired products were the opening of epoxide cycles, the transesterification of esters and the condensation of fatty acid derivatives. The new combination of renewable raw materials is of undoubted interest for deeper vegetable oils chemical processing.

Green chemistry of polyurethanes: Synthesis, structure, and functionality of triglycerides of soybean oil with epoxy and cyclocarbonate groups—renewable raw materials for new urethanes

2015 ◽  
Vol 57 (6) ◽  
pp. 584-592 ◽  
Author(s):  
M. A. Levina ◽  
D. G. Miloslavskii ◽  
M. L. Pridatchenko ◽  
A. V. Gorshkov ◽  
V. T. Shashkova ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Soybean Oil ◽  
Raw Materials ◽  
Renewable Raw Materials

Effects of Catalyst on the Transmittance and Stability of SiO2 Antireflective Film Prepared by Sol-Gel Method

2013 ◽  
Vol 834-836 ◽  
pp. 462-465
Author(s):  
Kun Peng ◽  
E. Chen ◽  
Ling Ping Zhou ◽  
Jia Jun Zhu ◽  
De Yi Li
Keyword(s):  
Raw Materials ◽  
Salt Spray ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Antireflective Film ◽  
Average Transmittance ◽  
Acid Catalyzed ◽  
The Stability ◽  
Better Than

SiO2 antireflective films were prepared by sol-gel method with TEOS as the raw materials and acid or ammonia as catalyst. The effects of different catalysts on the transmittance and the stability of film were investigated. The prepared base catalyzed SiO2 film has better antireflective effects than that of film acid catalyzed film, but the corrosion-resistance of SiO2 film catalyzed by acid was better than that of film catalyzed by base, the average transmittance in the range of 400-900nm of acid-catalyzed film after 50h salt spray test was about 93.8%, which was higher than that of base-catalyzed film.

scholarly journals Biolubricants from Rapeseed and Castor Oil Transesterification by Using Titanium Isopropoxide as a Catalyst: Production and Characterization

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 366 ◽  
Author(s):  
José María Encinar ◽  
Sergio Nogales-Delgado ◽  
Nuria Sánchez ◽  
Juan Félix González
Keyword(s):  
Fatty Acids ◽  
Castor Oil ◽  
Raw Materials ◽  
Methyl Esters ◽  
Titanium Isopropoxide ◽  
Molar Ratio ◽  
Low Viscosity ◽  
Catalyst Production ◽  
Better Than

The transesterification of rapeseed and castor oil methyl esters with different alcohols (2-ethyl-1-hexanol, 1-heptanol and 4-methyl-2-pentanol) and titanium isopropoxide as a catalyst, to produce biolubricants, was carried out. Parameters such as temperature, alcohol/methyl ester molar ratio, and catalyst concentration were studied to optimize the process. The reaction evolution was monitored with the decrease in FAME concentration by gas chromatography. In general, the reaction was almost complete in two hours, obtaining over 93% conversions. All the variables studied influenced on the reaction yields. Once the optimum conditions for the maximum conversion and minimum costs were selected, a characterization of the biolubricants obtained, along with the study of the influence of the kind of alcohol used, was carried out. The biolubricants had some properties that were better than mineral lubricants (flash points between 222 and 271 °C), needing the use of additives when they do not comply with the standards (low viscosity for rapeseed biolubricant, for instance). There was a clear influence of fatty acids of raw materials (oleic and ricinoleic acids as majority fatty acids in rapeseed and castor oil, respectively) and the structure of the alcohol used on the final features of the biolubricants.

A comparative study of the reactivity of three plant oil methyl esters with divinylbenzene by FTIR spectroscopy

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Fuqiang Jin ◽  
Bo Wang ◽  
Suqin Hu ◽  
Jianmei Wang ◽  
Feipeng Cai ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Comparative Study ◽  
Soybean Oil ◽  
Ftir Spectroscopy ◽  
Linseed Oil ◽  
Methyl Esters ◽  
Plant Oil ◽  
Tung Oil ◽  
Fatty Acid Compositions

AbstractPoly(divinylbenzene) microspheres were prepared by seed swelling polymerization of divinylbenzene in the presence of tung oil methyl esters, linseed oil methyl esters and soybean oil methyl esters, respectively. FTIR spectroscopy was used to characterize the polymers for investigating the reactivity of the three plant oil methyl esters. Results showed that tung oil methyl esters had strongest reactivity with divinylbenzene, and soybean oil methyl esters had weakest reactivity of the three oil methyl esters in the polymerization. These results were related with the fatty acid compositions of the oils.

Hydrogenolysis of glucose and fructose in glycol solutions over CuO-MgO-ZrO2 catalyst

2020 ◽  
pp. 48-55
Author(s):  
M.E. Sharanda ◽  
◽  
E.A. Bondarenko ◽  
Keyword(s):  
Ethylene Glycol ◽  
Propylene Glycol ◽  
Flow Reactor ◽  
General Trend ◽  
Raw Materials ◽  
Reaction Products ◽  
Renewable Raw Materials ◽  
High Partial Pressure ◽  
Zro2 Catalyst ◽  
Phase Process

Ethylene glycol and propylene glycol are important representatives of polyols. On an industrial scale, they are obtained from petrochemical raw materials. Within a decade, significant efforts were made for the producing of polyols from biologically renewable raw materials - carbohydrates. The general trend for carbohydrate hydrogenolysis includes application of liquid-phase process with the use of modified metal-oxide catalysts, at 120-120 ° C and pressure of 3MPa or above. So high pressure is used for the reason to increase hydrogen solubility, and also due to the high partial pressure of low boiling solvents. We supposed that usage of high boiling solvents could allow hydrogenolysis to be performed at the lower pressure. Ethylene glycol and propylene glycol are of particular interest as such kind of solvent since they are both the main products of glucose hydrogenolysis. In this work, the process of hydrogenolysis of glucose and fructose over Cu / MgO-ZrO2 catalyst have been studied at temperature range of 160-200 °C and a pressure of 0.1-0.3 MPa in a flow reactor. The solvents were simultaneously the target products of the reaction - ethylene glycol and / or propylene glycol. Gas chromatography and 13C NMR were used for the reaction products identification. It was found that the solubility of glucose in propylene glycol is 21 % by weight, and in ethylene glycol 62% by weight. It was pointed out that the process of hydrogenolysis can take place at a pressure close to atmospheric. Under these conditions, the conversion of hexoses reaches 96-100 %. The reaction products are preferably propylene glycol and ethylene glycol. The total selectivity for C3-2 polyols is 90-94 %, that is higher than in the hydrogenolysis of glucose in aqueous solution.

FUNDAMENTAL CAPITAL FINANCING OF PRODUCTION

2020 ◽  
Vol 8 (3) ◽  
pp. 74-78
Author(s):  
Farrux Zulfiyev ◽  
Keyword(s):  
Raw Materials ◽  
Economic Reforms ◽  
Equity Financing ◽  
Capital Financing ◽  
The Republic ◽  
The Stability

This article is based on the principles of shared financing of the production of raw materials. The article is aimed at financing the production of capital on the basis of equity in order to further strengthen the stability of economic reforms in the republic. At the same time, the essence of equity financing, the risks associated with it, and the efficiency of raw materials are covered

scholarly journals Dispersion of Carbon Nanotubes with “Green” Detergents

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2908
Author(s):  
Kazuo Umemura ◽  
Ryo Hamano ◽  
Hiroaki Komatsu ◽  
Takashi Ikuno ◽  
Eko Siswoyo
Keyword(s):  
Carbon Nanotubes ◽  
Sodium Dodecyl ◽  
Detergent Solution ◽  
Absorbance Spectroscopy ◽  
Fundamental Research ◽  
The Stability ◽  
Single Walled Cnts ◽  
Better Than ◽  
Walled Cnts ◽  
Cnt Suspensions

Solubilization of carbon nanotubes (CNTs) is a fundamental technique for the use of CNTs and their conjugates as nanodevices and nanobiodevices. In this work, we demonstrate the preparation of CNT suspensions with “green” detergents made from coconuts and bamboo as fundamental research in CNT nanotechnology. Single-walled CNTs (SWNTs) with a few carboxylic acid groups (3–5%) and pristine multi-walled CNTs (MWNTs) were mixed in each detergent solution and sonicated with a bath-type sonicator. The prepared suspensions were characterized using absorbance spectroscopy, scanning electron microscopy, and Raman spectroscopy. Among the eight combinations of CNTs and detergents (two types of CNTs and four detergents, including sodium dodecyl sulfate (SDS) as the standard), SWNTs/MWNTs were well dispersed in all combinations except the combination of the MWNTs and the bamboo detergent. The stability of the suspensions prepared with coconut detergents was better than that prepared with SDS. Because the efficiency of the bamboo detergents against the MWNTs differed significantly from that against the SWNTs, the natural detergent might be useful for separating CNTs. Our results revealed that the use of the “green” detergents had the advantage of dispersing CNTs as well as SDS.

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