Synthesis and Analysis of Ethylene Glycol Methyl Ethyl Ether

2012 ◽  
Vol 608-609 ◽  
pp. 1395-1398
Author(s):  
Yong Jie Wang ◽  
Mu Zhang
Keyword(s):  
Reaction Time ◽  
Ethylene Glycol ◽  
Reaction Temperature ◽  
Orthogonal Experiment ◽  
Order Reaction ◽  
Methyl Ethyl ◽  
Single Factor ◽  
Methyl Ethyl Ether ◽  
Influence Degree ◽  
Single Factor Experiment

This document explains and demonstrates the problem of HOCH2CH2OCH3, Na and CH3OCH2CH2OC2H5, factors of CH3OCH2CH2OC2H5 a yield influence degree order: reaction temperature>C2H5Br consumption> etherification reaction time, comprehensive single factor experiment and orthogonal experiment results, and concludes that the C2H5Br, sodium metal and CH3OCH2CH2OH is a laboratory CH3OCH2CH2OC2H5 a the best conditions for, C2H5Br : Na (mol ratio) = 1.4, reaction temperature 80 °C, reaction time is 3.5 h.

Research on Polymerization Processes of Cationic Polyacrylate Emulsion and its Optimization

2011 ◽  
Vol 311-313 ◽  
pp. 1190-1194
Author(s):  
Quan Xiao Liu ◽  
Yu Bin Lv ◽  
Jin Li Li ◽  
Wen Cai Xu
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Conversion Rate ◽  
Orthogonal Experiment ◽  
Solid Content ◽  
Single Factor ◽  
Orthogonal Experiments ◽  
Drop Time ◽  
Single Factor Experiment ◽  
Emulsification Process

Cationic polyacrylate emulsion was prepared in lab by semi-continuous seed pre-emulsification process. After the single factor experiments, the orthogonal experiments were made to get the optimal polymerization processes. Through the single factor experiment and further the orthogonal experiment optimization, it shows that the sequence of the effect of these factors on the viscosity of emulsion is drop time > reaction time > reaction temperature. The sequence of the effect of these factors on the solid content of emulsion is drop time > reaction time > reaction temperature. The sequence of the effect of these factors on the conversion rate of emulsion is drop time > reaction time > reaction temperature. The obtained best polymerization processes are the drop time is 1.5h, the reaction time is 5h, the reaction temperature is 85 °C. Under the best polymerization processes, the properties of the emulsion are the solid content is 35.40%, the conversion rate is 96.33%, the viscosity is 456.67mPa.s, the particle size is 490.20nm, the Zeta potential is 30.50 mV and pH is 2.50.

Optimization of Lactose Content in the Row Milk by Colorimetry via Response Surface Methodology

2014 ◽  
Vol 997 ◽  
pp. 38-42
Author(s):  
Jian Ting Ning ◽  
Jun Rui Wu ◽  
Xi Qing Yue
Keyword(s):  
Mathematical Model ◽  
Response Surface Methodology ◽  
Reaction Time ◽  
Response Surface ◽  
Reaction Temperature ◽  
Raw Milk ◽  
Single Factor ◽  
Optimum Extraction ◽  
Single Factor Experiment

The lactose content in the raw milk by colorimetry was introduced in the paper.On the single-factor experiment basis, it used response surface methodology to establish a quadratic mathematical model of lactose content. After analyzing the significance of the various factors and interactions, the results showed the optimum extraction conditions of detecting lactose content by colorimetry were as follows: reaction temperature 100°C, reaction time 5.2min, amount of precipitation 2.9 mL. In order to verify the method’s accuracy, five kinds of raw milk were chosen to test. The results showed the recoveries were between 97.122%-101.294%, so it is feasible to determine the content of lactose in raw milk.

Improvement of Emulsifying Properties of Soybean Protein Isolate through Glycosylation Modification

2013 ◽  
Vol 781-784 ◽  
pp. 1495-1499 ◽  
Author(s):  
Xi Bo Wang ◽  
Ying Hua Zhang ◽  
Lian Zhou Jiang
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Soybean Protein ◽  
Protein Isolate ◽  
Emulsifying Properties ◽  
Single Factor ◽  
Soybean Protein Isolate ◽  
Operation Conditions ◽  
Single Factor Experiment

In order to improve EAI and ESI of Soybean protein isolate (SPI), Glycosylation modification was studied by adding lactose and the operation conditions for modification were established by single factor experiment. On the basis, Box-Behnken model was used to optimize technological conditions, test and analyze the EAI and ESI of modified products under various conditions. The best glycosylation modification was as follows: the augmenter of lactose was 6.9%, reaction temperature was 70.5°C, reaction time was 38.6h, and the EAI and ESI could achieve 0.754 and 24.00 which was 2.32 and 2.67 times of the unmodified SPI. The experiment proved that the modification technology can effectively increase EAI and ESI of SPI.

Synthesis and Characterization of Bagasse Xylan Chlorosulfonate from the Chlorosulfonic Acid/Pyridine Method

2014 ◽  
Vol 1049-1050 ◽  
pp. 133-136 ◽  
Author(s):  
Bao Qin Song ◽  
He Ping Li ◽  
Jin Wei Yuan ◽  
Xu Yang ◽  
Guan Ya Wu
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Chlorosulfonic Acid ◽  
Synthesis And Characterization ◽  
Single Factor ◽  
Reaction Parameters ◽  
Ir Spectrometry ◽  
Characteristic Absorption ◽  
Single Factor Experiment

Bagasse xylan chlorosulfonate was synthesized by the esterification between bagasse xylan and esterification agent which was prepared by the chlorosulfonation from chlorosulfonic acid and pyridine. The effect of reaction parameters such as reaction temperature and reaction time was investigated for esterification of bagasse xylan with chlorosulfonic acid by single factor experiment. The degree of substitution (DS) of Bagasse xylan chlorosulfonate was up to 1.41 when the reaction was performed at temperature 45°C for 4.0h. The IR spectrometry revealed characteristic absorption peaks of the S=O and S―O at 1121.78cm-1 and 803.20cm-1, and this explained that bagasse xylan backbone has been joined the sulfate radical groups and bases successfully. The microstructure of bagasse xylan chlorosulfonate was also investigated by SEM.

The Preparation of Loaded Photocatalyst for Advanced Treatment of NH3-N in Coking Water

2013 ◽  
Vol 726-731 ◽  
pp. 2829-2832
Author(s):  
Yong Shu Tian ◽  
Run Xin Hou
Keyword(s):  
Photocatalytic Degradation ◽  
Orthogonal Experiment ◽  
Influence Factors ◽  
Advanced Treatment ◽  
Optimum Process ◽  
Process Conditions ◽  
Single Factor ◽  
Clay Brick ◽  
Degradation Rates ◽  
Single Factor Experiment

Photocatalyst of Fe-Sm-Yb modified TiO2 loaded on clay brick was prepared for degradation of NH3-N in coking water. The influence factors of NH3-N degradation rates were discussed by single factor experiment and orthogonal experiment. The optimum process conditions of photocatalytic degradation NH3-N in coking water were confirmed. The results show that NH3-N degradation rates 82.23% were highest in the conditions of pH 6.5, photocatalyst charge of 1.4 g, illumination for 6h, reaction at 55°C, calcination at 500°C.

Synthesis and Characterization of a New Phosphorus-Containing Curing Agent PPDTA

2019 ◽  
Vol 953 ◽  
pp. 185-190
Author(s):  
Yong Li Peng ◽  
Ni An Zhuo ◽  
Can Zhang
Keyword(s):  
Infrared Spectroscopy ◽  
Reaction Time ◽  
Reaction Temperature ◽  
Orthogonal Experiment ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Curing Agent ◽  
Phosphorus Containing ◽  
Three Factor

A new phosphorus-containing flame-retardant curing agent PPDTA was synthesized from phenylphosphonic dichloride (PPD) and 3-amino-1,2,4-triazole (TA) in tetrahydrofuran solvent to improve the flame retardancy of epoxy resin. The structure of the compound was analyzed and confirmed by infrared spectroscopy. The effects of reaction time, reaction temperature and ratio of reactants on yield were studied by using three-factor three-level orthogonal experiment. The results show that the yield of PPDTA can reach 86.4%, when the reaction time is 10h, reaction temperature is 70 °Cand the molar ratio of TA to PPD is 2.2:1.

scholarly journals Synthesis and Performance ofN-(Benzoyl) Stearic Acid Hydrazide

2012 ◽  
Vol 9 (2) ◽  
pp. 545-552 ◽  
Author(s):  
Yan-Hua Cai ◽  
Shun-Jiang Li
Keyword(s):  
Reaction Time ◽  
Stearic Acid ◽  
Reaction Temperature ◽  
Orthogonal Experiment ◽  
Acid Hydrazide ◽  
Semiempirical Method ◽  
Molar Ratio ◽  
H Nmr ◽  
And Performance ◽  
Benzoyl Hydrazine

N-(benzoyl) stearic acid hydrazide was synthesized from benzoyl hydrazine and stearyl chloride which was deprived from stearic acid via acylation. The structure of the compound had been characterized by FT-IR,1H NMR, at the same time, the structure of N-(benzoyl) stearic acid hydrazide was optimized by the semiempirical method PM3. The influence of the reaction ratio, reaction time and reaction temperature to the yield ofN-(benzoyl) stearic acid hydrazide was investigated by orthogonal experiment, and the optimized reaction condition was molar ratio of benzoyl hydrazine: stearyl chloride 1:1, reaction time 6 h, reaction temperature 70°C, and the yield was 92.9%. The TGA thermal analysis of N-(benzoyl) stearic acid hydrazide showed that thermal stability ofN-(benzoyl) stearic acid hydrazide was affected by heating rate, and theN-(benzoyl) stearic acid hydrazide enhanced the tensile strength, modulus and elongation at break of Poly(L-lactic acid)(PLLA).

Study on Extraction of Polyphenol from Grape Peel Microwave-Assisted Activity

2013 ◽  
Vol 864-867 ◽  
pp. 520-525 ◽  
Author(s):  
Hai Bo Yu ◽  
Li Feng Ding ◽  
Zheng Wang ◽  
Li Xin Shi
Keyword(s):  
Orthogonal Experiment ◽  
Processing Conditions ◽  
Single Factor ◽  
Grape Skin ◽  
Ethanol Extraction ◽  
Microwave Assisted ◽  
Polyphenol Extraction ◽  
Microwave Assistance ◽  
Single Factor Experiment ◽  
Grape Peel

In this study, we performed a single-factor experiment and an orthogonal experiment to evaluate different processing conditions during the extraction of polyphenols from grape skin using microwave-assisted ethanol extraction. In the study, we found that the best conditions for polyphenol extraction using microwave assistance were as follows: 50% ethanol (40 mL) was used to extract polyphenols from grape skin (1 g) while in a 540-W microwave for 3 min.

Production of Low Calorie Oil with Enzymatic Catalysis Method

2012 ◽  
Vol 554-556 ◽  
pp. 1178-1182
Author(s):  
Hui Ling Cui ◽  
Yuan Dong Xu ◽  
Yu Jun Zhang ◽  
Hui Bo Song
Keyword(s):  
Reaction Time ◽  
Soybean Oil ◽  
Reaction Temperature ◽  
Orthogonal Experiment ◽  
Enzymatic Catalysis ◽  
Calorific Value ◽  
Molar Ratio ◽  
Reaction Yield ◽  
Low Calorie ◽  
Glycerol Triacetate

The 1, 3-specific lipase of Lipozymetlim was used as catalyst to produce low calorie oil through the reaction of soybean oil with glycerol triacetate. The effects of catalyst using amount, molar ratio of the substrates, reaction temperature and reaction time on the product yields were investigated. The orthogonal experiment results showed that the optimal reaction conditions were the substrate molar ratio of 2:1, reaction temperature of 60 °C, reaction time of 24 h, and 10 % enzyme adding amount per gram of substrate. Under such conditions, the reaction yield was 79.56 %. After 5 times reuse of the enzyme, the yield still could reach 58.94 %. The calorific value of the product was measured by calorimetric method and the value was 35 027 J/g which was about 75 % of the corresponding value for soybean oil.

Preparation of Copolymer Modified with Oxidized Starch and Dispersion Ability for Ferric Oxide

2014 ◽  
Vol 989-994 ◽  
pp. 156-159
Author(s):  
Ji Cheng Xu ◽  
Xin Shan Rong ◽  
Xiao Rui Guo ◽  
Feng Xian Qiu
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Uv Spectroscopy ◽  
Ammonium Persulfate ◽  
Experimental Results ◽  
Oxidized Starch ◽  
High Temperature Water ◽  
Mass Proportion ◽  
Single Factor Experiment ◽  
Temperature Water

A series of copolymers modified with oxidized starch containing maleic anhydride (MA), styrene sulfonic sodium (SSS) and oxidized starch (OS) were synthesized by the free-radical polymerization. The polymerization is initiated by ammonium persulfate. The effects of content of monomer and initiator, reaction time, reaction temperature on dispersion ability for Fe2O3 were investigated by single factor experiment. The dispersion ability for Fe2O3 measured through UV spectroscopy was studied. The experimental results show that the copolymer has good dispersion ability for Fe2O3 when the mass proportion of monomers is OS:SSS:MA = 1:3:1, the mass fraction of initiator in total monomers is 10 %, reaction time is 5 h, and the reaction temperature is 70 oC. The morphology of the copolymer was observed by scanning electron microscope (SEM). The experimental results indicate that the prepared copolymer modified with oxidized starch could be used in the corrosion inhibitor of high temperature water.

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