Study on the Regeneration of Quaternary Ammonium Heteropolyphosphatotungstate Catalyst

2014 ◽  
Vol 1004-1005 ◽  
pp. 1000-1004
Author(s):  
Xiao Zhu Lu ◽  
Guo Qin Liu ◽  
Xin Qi Liu ◽  
Lu Jing
Keyword(s):  
Acid Solution ◽  
Soybean Oil ◽  
Quaternary Ammonium ◽  
Reaction System ◽  
Economic Feasibility ◽  
Epoxidized Soybean Oil ◽  
Process Conditions ◽  
Single Factor ◽  
Epoxy Value

The quaternary ammonium heteropolyphosphatetungstate compound is proved as a promising catalyst to accelerate the synthesis of epoxidized soybean oil (ESO). As to enhance the efficiency of the catalyst, this paper investigated the process of regeneration of deactivated catalyst (DC) from reaction system of ESO. The single factor experiments were carried out to optimize the regeneration conditions and the optimize process conditions were as follows: acid solution at pH 3, m (deactivated catalyst):m (H2O2):m (H3PO4):m (cetylpyridiniumammonium chloride)=10:5:1:1,and stirred via mechanical and ultrasound agitation . Under above conditions, the epoxy value (≥6.0 %) of ESO which were catalyzed by generated catalyst and yield (≥92 %) were achieved.The results indicate that the activity of regenerated catalysts remain the same as that of the fresh catalysts and certify the economic feasibility of the process.

Synthesis of Epoxidized Soybean Oil via Phase Transfer Catalysis

2013 ◽  
Vol 690-693 ◽  
pp. 1061-1064 ◽  
Author(s):  
Lu Jing ◽  
Guo Qin Liu ◽  
Xin Qi Liu ◽  
Xue De Wang
Keyword(s):  
Reaction Time ◽  
Soybean Oil ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Active Agent ◽  
Epoxidized Soybean Oil ◽  
Reaction Conditions ◽  
Epoxidation Reaction ◽  
Optimized Conditions ◽  
Epoxy Value

In the system of heteropoly acid [π-C5H5NC16H33]3[PO4(WO3)4], H2O2 (30 %, w/w), polyethylene glycol, 1,2-dichloroethane, soybean oil under went epoxidation reaction smoothly via reaction-controlled phase transfer catalysis. Effects of the amount of interfacial active agent, H2O2, catalyst and reaction time were investigated and the optimized reaction conditions were as follows: 10 g of soybean oil, 0.3 g of [π-C5H5NC16H33]3[PO4 (WO3)4],8 ml of H2O2 (30 %, w/w), 5.0 ml of PEG, 30 g of 1,2-dichloroethane, and the reaction temperature was 65 °C and reaction time was 3.5-4.0 h. Under these optimized conditions, an epoxy value of 6.30 % and a yield of 90 % were obtained. Hence, it is an environmental-friendly and effective way to synthesize epoxidized soybean oil.

Properties of Biobased Epoxy Resins from Epoxidized Soybean Oil (ESBO) Cured with Maleic Anhydride (MA)

2012 ◽  
Vol 89 (11) ◽  
pp. 2067-2075 ◽  
Author(s):  
J. M. España ◽  
L. Sánchez-Nacher ◽  
T. Boronat ◽  
V. Fombuena ◽  
R. Balart
Keyword(s):  
Maleic Anhydride ◽  
Soybean Oil ◽  
Epoxy Resins ◽  
Epoxidized Soybean Oil

Highly epoxidized soybean oil in replacement of mineral oil for high performance on silica-filled tread rubber compounds

2021 ◽  
pp. 009524432110290
Author(s):  
Leandro Hernán Esposito ◽  
Angel José Marzocca
Keyword(s):  
Soybean Oil ◽  
High Performance ◽  
Rolling Resistance ◽  
Wear Test ◽  
Mineral Oil ◽  
Epoxidized Soybean Oil ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Compound ◽  
The Impact

The potential replacement of a treated residual aromatic extract mineral oil (TRAE) by a highly epoxidized soybean oil (ESO) into a silica-filled styrene-butadiene rubber compound was investigated. In order to determine if ESO compounds performance are suitable for tread tire applications, processing properties cure and characteristics were evaluated. The impact of ESO amount on the silica dispersion was confirmed by Payne Effect. The presence of chemical or physical interactions between ESO and silica improves the filler dispersion, enabling the compound processability and affecting the cure kinetic rate. An adjusted rubber compound with 2 phr of ESO and 2 phr of sulfur presented the higher stiffness and strength values with lower weight loss from a wear test compared with TRAE compound at an equal amount of oil and curing package. Furthermore, wet grip and rolling resistance predictors of both compounds gave comparable results, maintaining a better performance and reducing the dependence of mineral oil for tire tread compounds.

Biobased, Biodegradable, Self-Healing Boronic Ester Vitrimers from Epoxidized Soybean Oil Acrylate

2020 ◽  
Author(s):  
Arkadiusz Zych ◽  
Jonathan Tellers ◽  
Laura Bertolacci ◽  
Luca Ceseracciu ◽  
Lara Marini ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Epoxidized Soybean Oil ◽  
Self Healing ◽  
Boronic Ester

scholarly journals Homogenate Extraction of Crocins from Saffron Optimized by Response Surface Methodology

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Yingpeng Tong ◽  
Yu Jiang ◽  
Dan Guo ◽  
Yongqiu Yan ◽  
Shiping Jiang ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Ethanol Concentration ◽  
Extraction Yield ◽  
Extraction Time ◽  
Process Conditions ◽  
Extraction Temperature ◽  
Single Factor ◽  
Extraction Voltage ◽  
Homogenate Extraction

Saffron, which has many kinds of biological activities, has been widely used in medicine, cosmetics, food, and other fields of health promotion industries. Crocins are the main component of saffron (Crocus sativus L.). At present, most of the extraction methods for crocins require long time or special instruments to complete the process and some of them are not suitable for industrial production at present. In this article, homogenate extraction technology which is a convenient and efficient method was developed for crocins extraction from saffron. Firstly, the influences of extraction voltage, extraction time, ethanol concentration, and temperature on crocins yield were studied by single factor experiments; and then response surface methodology (RSM) was used to optimize levels of four variables based on the result of single factor experiments. Results showed that the optimum extraction process conditions for crocins were as follows: extraction voltage, 110 V; ethanol concentration, 70%; extraction temperature, 57°C; and extraction time, 40 s. Based on these conditions, the extraction yield of crocins can reach 22.76% which is higher than ultrasonic extraction method. Therefore, homogenate extraction is an effective way to extract crocins from saffron with higher extraction yield and shorter extraction time.

Sign in / Sign up

Export Citation Format

Share Document