Synthesis of Diamine Containing Chalcone Structure by Nitroammoniation and Aldol Condensation

2019 ◽  
Vol 801 ◽  
pp. 145-150
Author(s):  
Yan Kai Huang ◽  
Qi Lin Mei ◽  
Zhi Xiong Huang ◽  
Yan Qin ◽  
Di Zhu
Keyword(s):  
Reaction Temperature ◽  
Elemental Analysis ◽  
Aldol Condensation ◽  
Raw Material ◽  
Anhydrous Ethanol ◽  
Infrared Analysis ◽  
Reaction Conditions ◽  
Optimum Reaction ◽  
Ethanol Dosage

In this paper, the structure of the photosensitive diamines was designed and the method of synthesizing such diamines was investigated. The 1-(3-aminophenyl)-3-(4-aminophenyl)-2-propen-1-one analyzed by elemental analysis and infrared analysis was synthesized through two-step experiments with Aldol condensation and Nitroammoniation process. Through the experiment the optimum reaction conditions are raw material ratio of 1:1, anhydrous ethanol dosage of 60 ml, 10 % NaOH dosage of 10 ml and reaction temperature of 25°C for 4h. The yield was about 55.4 %.

Preparation and Properties of MgAl2O4-CaAl12O19 High Temperature Composite

2012 ◽  
Vol 512-515 ◽  
pp. 617-620
Author(s):  
Yong Hong Wang ◽  
Yan Gai Liu ◽  
Tao Yang ◽  
Zhao Hui Huang ◽  
Ming Hao Fang
Keyword(s):  
Phase Composition ◽  
High Temperature ◽  
Reaction Temperature ◽  
Bending Strength ◽  
Raw Materials ◽  
Weight Ratio ◽  
Raw Material ◽  
Reaction Conditions ◽  
Optimum Reaction ◽  
Industrial Alumina

The utilization of lightweight refractories plays an important role in reducing the energy consumption of industrial furnaces. In this paper, MgAl2O4-CaA112O19 high temperature composite was synthesized via solid state reaction using magnesite, dolomite and industrial alumina as raw materials. The influences of raw materials and reaction temperature on phase compositions and microstructure of the composite were investigated by XRD and SEM，respectively. The parameters to prepare MgAl2O4-CaA112O19 high temperature composite were optimized. The results show that the optimum reaction conditions for synthesizing MgAl2O4-CaA112O19 composite is the CA6/MA weight ratio of 2:3, and the reaction temperature of 1500°C for 4h. The CaA112O19 crystals showed laminated or plate-like structure, and the MgAl2O4 showed spherical morphology. The reaction temperature had little effect on the phase compositions of MA-CA6 composite in this experiment. The content of Al2O3 in the raw material affected the phase composition of MA-CA6 composite.With the increase of the CaA112O19 amount, the bending strength of the composite decreased.

Study on the Influence of Different Catalysts on the Preparation of Ethyl Levulinate from Biomass Liquefaction

2020 ◽  
Vol 14 (3) ◽  
pp. 396-400
Author(s):  
Shuhua Yang ◽  
Qian Guan ◽  
Zijie Li ◽  
Haiyan Xu ◽  
Zhiwei Wang ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Reaction Time ◽  
Reaction Temperature ◽  
Raw Materials ◽  
Raw Material ◽  
Reaction Conditions ◽  
Ethyl Levulinate ◽  
Catalyst Type ◽  
Optimum Reaction ◽  
Catalyst Dosage

The liquefaction experiments of straw biomass under heating and pressure were carried out with sulfuric acid and three ionic liquids as catalysts, 1-Butyl-3-methylimidazolium chloride ([BMIM] [Cl]), 1-Butyl-3-methylimidazolium hydrogen sulfate ([BMIM] [HSO4]), 1-methyl-3-(4-sulfobutyl) imidazole bisulphate ([HSO3-BMIM] [HSO4]), and anhydrous ethanol as solvent. The effects of catalyst type and dosage, reaction time and reaction temperature on liquefaction were investigated and optimized. The results showed that under the catalysis of sulfuric acid, the yield of ethyl levulinate was the highest; [HSO3-BMIM] [HSO4], the conversion of raw materials was the highest; when sulfuric acid was used as catalyst, the optimum reaction conditions were catalyst dosage 10%, reaction temperature 190 °C, reaction time 60 min, the yield of ethyl levulinate (EL) was 18.11%, and the conversion of raw materials was 75%. When [HSO3-BMIM] [HSO4] was used as catalyst, the optimum reaction conditions were as follows: catalyst dosage 26%, reaction temperature 200 °C, reaction time 60 min, the yield of EL was 10.2%, conversion of raw material 85.31%.

Synthesis and Characterization of Substituted μ-oxo-bis[tetra-phenylporphyrinatoiron] Compounds

2015 ◽  
Vol 748 ◽  
pp. 183-186
Author(s):  
Zhi Cheng Sun ◽  
Shu Ying Chen ◽  
Zhi Peng Guo ◽  
Mei Juan Cao ◽  
Lu Hai Li
Keyword(s):  
Infrared Spectra ◽  
Elemental Analysis ◽  
Aromatic Aldehydes ◽  
Synthesis And Characterization ◽  
Visible Spectroscopy ◽  
Reaction Conditions ◽  
One Pot ◽  
Optimum Reaction ◽  
Novel Method

A novel one-pot method for the synthesis of substituted μ-oxo-bis [tetraphenyl porphyrinatoiron] compounds ([TRPPFe]2O) from pyrrole and aromatic aldehydes was proposed and investigated in this paper. Four kinds of [TRPPFe]2O were designed and synthesized by one-pot reaction and characterized by elemental analysis, infrared spectra and ultraviolet-visible spectroscopy. Moreover, the [TRPPFe]2O yields of 18.7~22.4% could be obtained with this novel method under the optimum reaction conditions.

Study on the Synthesis and Properties of Water-Soluble Chitosan Grafted Copolymer

2011 ◽  
Vol 396-398 ◽  
pp. 1480-1485
Author(s):  
Shui Li Lai ◽  
Ning Yang ◽  
Qiang Chai
Keyword(s):  
Light Transmission ◽  
Ammonium Persulfate ◽  
Water Soluble ◽  
Raw Material ◽  
Reaction Conditions ◽  
Grafted Copolymer ◽  
Deacetylation Degree ◽  
Aqueous Solution Polymerization ◽  
Optimum Reaction ◽  
Polymerization Method

Grafted chitosan(CTS) copolymer was synthesized by the aqueous solution polymerization method, using the ammonium persulfate as initiator graft, Acrylamide（AM）and methacrylamide trimethyl Ammonium Chloride (DMC) as the grafted monomer. The effects of reaction conditions on grafted copolymerization were studied. When the deacetylation degree of chitosan as raw material is 86%, the optimum reaction to produce CTS -AM-DMC ternary graft copolymers by first AM and then DMC sequence were obtained at [initiator] 0.08%, 50°Cand 3.5h.The structure of CTS-AM-DMC was characterized by FTIR and XRD. When the dosage of synthetic product is 0.3mg/L, the effect of flocculation on the papermaking wastewater is obvious better, which can make the light transmission up to 99%, and CODCr to 9mg/L.

Analysis on Factors Affecting Biodiesel Production Rate Based on Probability Theory

2013 ◽  
Vol 860-863 ◽  
pp. 1030-1034
Author(s):  
Yi Wei ◽  
Jing Zhang ◽  
Mu Zhang ◽  
Yin Dong Zhang
Keyword(s):  
Experimental Data ◽  
Probability Theory ◽  
Production Rate ◽  
Reaction Temperature ◽  
Correlation Coefficients ◽  
Biodiesel Production ◽  
Reaction Conditions ◽  
Factors Affecting ◽  
Orthogonal Experiments ◽  
Optimum Reaction

Biodiesel orthogonal experiments require large amount of experimental data collected and in order to save experimental time, referring to the correlation coefficients analysis in probability theory, the factors which affect the yield of biodiesel are analyzed. Under the same reaction temperature, the range order is as follows: the molar ration of alcohol to oil, the dosage of catalyst and reaction of time. At the same time, it provides theoretical guidance for obtaining optimum reaction conditions .

Synthesis and Application of Starch Modified Flocculant

2013 ◽  
Vol 821-822 ◽  
pp. 1014-1018
Author(s):  
Meng Zheng ◽  
Hong Jun Zhang
Keyword(s):  
Raw Material ◽  
Solution Polymerization ◽  
Optimum Conditions ◽  
Cationic Starch ◽  
Reaction Conditions ◽  
Treatment Performance ◽  
Methylation Reaction ◽  
Aqueous Solution Polymerization ◽  
Optimum Reaction ◽  
Oil Wastewater

Starch (St) and acrylamide (AM) copolymers was prepared by aqueous solution polymerization, which as raw material finished hydroxyl methylation reaction, then condensation dehydration with dicyanodiamine, cationic starch graft flocculant is synthetized. Hydroxyl methylation reaction optimum conditions are: temperature T=50°C; pH=10; n (HCHO) : n (St-AM)=1.1:1; reaction time t=2h; Dehydration optimum reaction conditions: mole ratio of 1:1; pH = 4; t=3 h; temperature T=45°C. Intrinsic viscosity number of product is 1023 ml/g, cationizing degree is 50%. Treatment performance for oil wastewater is investigated by using cationic starch graft flocculant compound with the inorganic polymeric coagulant polyferric chloride, the experimental results show that: in wastewater pH=7, the amount of inorganic polymeric coagulant polyferric chloride is 2000 mg/L, the amount of starch graft flocculant is 500 mg/L, the treatment effect is the best, oil content and suspension content are less than 10 mg/L, which reach Daqing oilfield re-injection standard.

Preparation of Na2S from Na2SO4 Using CO

2014 ◽  
Vol 1004-1005 ◽  
pp. 703-706
Author(s):  
Xiao Yi Shen ◽  
Hong Mei Shao ◽  
Zhi Meng Wang ◽  
Yu Chun Zhai
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Conversion Rate ◽  
Raw Material ◽  
Temperature Reaction ◽  
Reaction Conditions ◽  
Material Thickness

Na2SO4 solution that was obtained from ZnSO4 solution after Zn2+ precipitation using Na2CO3 was used as raw material. The Na2SO4·7H2O crystallization was obtained through cooling the Na2SO4 solution, and then the solution was cycled. The Na2SO4·7H2O was dried and then put into a porcelain boat located in a roaster. When the reaction between Na2SO4 and CO ended, the Na2S was obtained. The influences of reaction temperature, reaction time and material thickness on the conversion rate were discussed. The appropriate reaction conditions were reaction temperature 675°C, reaction time 120min and material thickness less than 4cm.

Research on Synthesis Regularity of Epoxysuccinic Acid

2013 ◽  
Vol 316-317 ◽  
pp. 942-945
Author(s):  
Qing He Gao ◽  
Yi Can Wang ◽  
Zhi Feng Hou ◽  
Hui Juan Qian ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Reaction Time ◽  
Maleic Anhydride ◽  
Reaction Temperature ◽  
Raw Material ◽  
Molar Ratio ◽  
Mass Ratio ◽  
Synthesis System ◽  
Reaction Conditions ◽  
Sodium Hydrate

The yield of epoxysuccinic acid was obtained by determining the content of unreacted maleic anhydride and tartaric acid as a by-product in synthesis system. This method could calculate the yield of epoxysuccinic acid precisely and overcome the disadvantage of obtaining inpure product by recrystallization method. Epoxysuccinic Acid was synthesized using maleic anhydride as raw material, hydrogen peroxide as oxidizer and tungstate as catalyst. The effects of reaction temperature, reaction time, ratio of materials, dosage of oxidizer and catalyst on epoxidation and hydrolysis reaction was investigated. The results showed that the yield of epoxysuccinic acid was 88% when the reaction conditions were as follows: reaction temperature 65°C, reaction time 1.5h, catalyst dosage 3%(based on mass of maleic anhydride), molar ratio of sodium hydrate to maleic anhydride 2:1, mass ratio of hydrogen peroxide to maleic anhydride 1:1.

scholarly journals Production of biodiesel from vegetable oils and animal fats in waste water

2013 ◽  
Vol 16 (1) ◽  
pp. 5-11
Author(s):  
Thuy Thi Thanh Duong ◽  
Kien Trung Pham ◽  
Phuoc Van Nguyen ◽  
Phuong Thi Thanh Nguyen
Keyword(s):  
Waste Water ◽  
Vegetable Oils ◽  
Reaction Temperature ◽  
Reaction Conditions ◽  
Animal Fats ◽  
Optimum Reaction ◽  
Catalyst Dosage ◽  
G Ratio ◽  
Optimal Reaction ◽  
Optimum Reaction Condition

This study was performed to produce biodiesel from vegetable oils and animal fats in waste water of Park Hyatt Saigon hotel. The survey was performed to determine the optimum reaction condition for converting waste grease into biodiesel. The reaction was conducted at 60, 90 and 120 minutes; the catalyst dosage (NaOH) of 2, 3, 4, 5 and 6 g; ratio of 4:1, 5:1, 6:1, 7:1 MeOH : grease. The reaction temperature was 600C. The optimal reaction conditions were found to be 90 minutes, catalyst dosage of 4 g, ratio of 5:1 MeOH : grease. The efficient conversion achieved 80% biodiesel and 20% crude glycerin.

Single-Step Conversion of Cellobiose to 5-Hydroxymethylfurfural (5-HMF) Catalyzed by Poly Ionic Liquid

2014 ◽  
Vol 1004-1005 ◽  
pp. 885-890 ◽  
Author(s):  
Yan Lei Song ◽  
Yong Shui Qu ◽  
Chong Pin Huang ◽  
Li Hai Ge ◽  
Ying Xia Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Reaction Temperature ◽  
Formation Rate ◽  
Single Step ◽  
Cycle Performance ◽  
Reaction Conditions ◽  
Reaction Condition ◽  
Optimum Reaction ◽  
Poly Ionic Liquid ◽  
Optimum Reaction Condition

The PIL which were prepared from imidazole and epichlorohydrin were used as catalysts for the conversion of cellobiose to 5-HMF. Effects of the catalyst anion, solvents, reaction temperature, and recycling time were investigated in detail. The optimum reaction conditions for conversion of cellobiose into 5-HMFcatalysed by [IMEP]BF4 were temperature 180 oC, cellobiose 0.5 g, and [IMEP]BF4 0.25 g in DMSO(30 mL). In this condition the yield of 5-HMF can reach 39.2% for 420min. The good positive correlation between the concentration of glucose and the formation rate of 5-HMF was given, and the conversion of glucose into 5-HMF is the key step of formation of 5-HMF from cellobiose. Moreover, [IMEP]BF4 has well cycle performance in the optimum reaction condition.

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