Smirnova, N. А.

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 Секция 7.  Химия и химическая технология на иностранном языке525imum temperature for 3 hours. At the output of the first stage there was turned opaque, but tablets were enough strong. During the firing process occurs baking sam-ples, accompanied by a change, specifically the size reduction of the samples. It was found that a compo-sition 1 was sintered more rapidly than the compo-sition 2. In this case, at all temperatures firing linear shrinkage of composition 1 in 3 times is more than shrinkage of composition 2. Using the nanopowder in the composition 1 resulted more dense samples.XRD analysis of the test samples showed that, at any temperature of firing there are peaks of the synthesized aluminum oxynitride and aluminum ni-tride in samples of various compositions.And with increasing firing temperature inten-sity of the peaks of aluminum oxynitride Al23O27N5 increases, which indicates an increase in the num-ber of its synthesized blends. It was found that the use of aluminum nitride nanopowder promoted the formation Al23O27N5 at lower temperatures, as at 1750 °C aluminum oxynitride was the main phase of the X-ray. In the case of mixture 2 (micron pow-ders of aluminum oxide and nitride) were used at a temperature of 1750 °C firing on radiographs AlN. is the main phase.The increasing of the synthesis temperature to 1850 °C causes an intensification of the synthesis of oxynitride for the composition 1 and 2. Therefore, the research showed the efficiency of the use of powders with different particle sizes in the process of synthesis of aluminum oxynitride.references1 James W. McCauley, Parimal Patel, Mingwei Chen, Gary Gilde, Elmar Strassburger , Bhask-er Paliwal , K.T. Ramesh, Dattatraya P. Dan-dekar . AlON: A brief history of its emergence and evolution // Journal of the European Ce-ramic Society, 2009.– №29.– P.223–236.2 N. Zhang , B. Liang, X.Y. Wang , H.M. Kan, K.W. Zhu , X.J. Zhao. The pressureless sintering and mechanical properties of AlON ceramic // Ma-terials Science and Engineering, 2011.– №28.– P.61–63.3 S.F. Wang, J. Zhang, D.W. Luo, F. Gu, D.Y. Tang, Z.L. Dong, G.E.B. Tan, W.X. Que, T.S. Zhang, S. Lie, L.B. Kong. Transparent ceramics: process-ing, materials and applications // Progress in Solid State Chemistry, 2013.– №41.– P.20–44.oPtimiZation of synthesis ProCess of n-CarboXymethyl maleamiC aCidsN.А. SmirnovaScientific Supervisor – PhD, Associate Professor, А.А. Lyapkov Linguistic Advisor — DSc, Associate Professor, I.А. MatveenkoNational Research Tomsk Polytechnic University 634050, Russia, Tomsk, Lenina ave., 30, starshin@tpu.ruThe entire modern development of humanity is inextricably connected with the development of polymer industry – the creation of new and develop-ment of existing polymers, creation of products with new properties. An urgent problem is production of maleamic acid, since these substances are necessary for the development of new polymeric materials as intermediate products. Derivatives of dicyclopenta-diene is one of the popular types of monomers to produce new structural materials. Since Dicyclo-pentadiene is of high reactivity, it is used to produce a wide range of synthetic products. N-substituted maleimides are of the greatest interest as they con-tain different functional groups in their structure.The raw material for norbornene-dicarboxi-mide are dicyclopentadiene and N-carboxymethyl maleamic acid.The scheme of this process is shown in the first fig. 1.  Reaction scheme preparation of 5-norbornene-2,3-dihydroxy glycineXVII Международная научно-практическая конференция имени профессора Л.П. Кулёва526figure. Dicyclopentadiene is a by-product of ethylene and propylene production made at high temperature pyrolysis of petroleum fractions. 2-maleimide ace-tic acid is prepared from N-carboxymethyl maleam-ic acid.We have investigated the reaction producing N-carboxymethyl maleamic acid (figure 2). There are several methods for producing N-car-boxymethyl maleamic acid. According to one of the existing methods, this substance is prepared during three hours at room temperature in acetic acid [1]. Due to this method the substance yield is 95%. Another method of synthesis of N-carboxymethyl maleamic acid consists in heating substance during 10 minutes with the yield of 98% [2]. Also, there are several ways of obtaining the desired product in acetic acid during 12 hours and 16 [3, 4]. So, there is a need for effective methods of synthesis of N-car-boxymethyl maleamic acid.Objective: to optimize synthesis process of N-carboxymethyl maleamic acids. This method should be of high yield, less energy consumption, product purity.To achieve this goal the following parameters were measured: the synthesis time and the reaction mass temperature. The optimal conditions were se-lected depending on yield.Conditions of the syntheses are given in Ta-ble 1.Identification of N-carboxymethyl maleamic acid was carried out by IR spectroscopy and ele-mental analysis.Results of the syntheses are given in Table 2.Based on the table above, the highest yield of the main product in the reaction is achieved in two hours at room temperature. Increasing the reaction time to 3 hours does not lead to higher yields. Probably, the reduction in the yield by increas-ing the temperature of the reaction mass is related to dissolving the reaction product in the solvent.references1. N. Baumhover, K. Anderson, C. Fernandez // Bioconjugate Chemistry, 2010.– P.74–83.2. Prof. Dr. Manfred Augustin, Dr. Wolfgang Müller // Journal für Praktische Chemie, 2004.– P.789–798.3. R. Pearson, E. Kassianidis, A. Slawin, D. Philp // Org Biomol Chem., 2004.– P.3434–3441.4. E. Kassianidis, R. Pearson, D. Philp // Chemis-try.– A European Journal, 2006.– P.8798–8812.fig. 2.  Scheme of reaction to produce N-carboxymethyl maleamic acidtable 1. Conditions of the synthesesNumber of synthesis 1 2 3 4 5Time, min. 60 120 180 120 120Temperature, °C 25 25 25 50 80table 2. Result of the synthesesNumber of synthesis 1 2 3 4 5Mass, g 5.4 6.5 5.9 6.5 5.8Yield, % 61.4 73.6 67.38 73.7 65.8

Optimization of synthesis process of N-carboxymethyl maleamic acids

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