Bulletin of the National Technical University "KhPI". Series: Chemistry, Chemical Technology and Ecology最新文献

{"title":"INVESTIGATION OF RECYCLING PROCESSES OF MIXED WASTE OF CONSUMPTION OF THERMOPLASTICS AND INTRODUCTION OF PRODUCTS ON THEIR BASIS IN INDUSTRY","authors":"V. Avramenko, A. V. Blyznyuk, L. P. Pidhorna, Hanna Nikolaevna Cherkashina, O. M. Rassokha, Tamara Volodymirovna Kolomietz","doi":"10.20998/2079-0821.2019.02.06","DOIUrl":"https://doi.org/10.20998/2079-0821.2019.02.06","url":null,"abstract":"Developed technologically compatible polymer composite materials with controlled properties on the basis of partially oxidized polyolefins and polystyrene, the level of properties which is not inferior, and in some cases 1.2-1.4 times higher than the level of properties of compositions on the basis of certified materials. Revealed that the secondary polyethylene and polystyrene plastics have smaller (in comparison with primary materials) the junction temperature in the highly elastic state and the interval of basketcount less resistance to deformation and, consequently, less ability to change modes of processing. Comparison of properties of primary plastics and plastics that were taken from the waste of consumption, shows that both polyethylene and polystyrene in the process of operation undergo significant property changes. To a greater extent these changes in the secondary materials compared to primary occur in the polyethylene (a gel-fraction, unsaturated the group consisting of oxygen, decreases the molecular weight and the melt flow rate). Studied the degree of aging and related natural changes of the chemical structure of recycled polyethylene and polystyrene plastics on the properties of composite materials. In addition to aging, a significant impact on the processes of thermo - and photo-oxidation has a supramolecular structure of polymers, which significantly influences the formation of a complex of operational properties of products. The dependence of viscosity of the mixture at different temperatures and the value of shear stress shows that there is a sharp decrease of melt viscosity that occurs in mixtures of polymers in a time close to the limit of compatibility. Reveals that the use of only partially oxidized polyethylene and polystyrene oxidized, or only one component (polyethylene or polystyrene) does not lead to a substantial increase in the strength characteristics.","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86438852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TREATMENT OF WASTEWATER OF POULTRY ABATTOIR BY COAGULATION","authors":"Konstantyn Makhlay, M. Tseitlin, V. Raiko","doi":"10.20998/0821.2019.01.05","DOIUrl":"https://doi.org/10.20998/0821.2019.01.05","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81285881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ADSORPTION OF ACETIC ACID AND THE PROMOTERS OF FORMATION OF PEROXO GROUPS ON PLATINUM AT HIGH ANODIC POTENTIALS","authors":"Tetiana Andriyivna Bilous, Gennadiy Georgiyovych Tulsky, I. Chahine, Karina Nikolaevna Krotinova","doi":"10.20998/0821.2019.01.01","DOIUrl":"https://doi.org/10.20998/0821.2019.01.01","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90918234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"pH SENSOR WITH FREQUENCY OUTPUT FOR ECOLOGICAL CONTROL OF WATER","authors":"G. S. Popenko, Tatyana Borisivna Belikova, Vita Shumejko","doi":"10.20998/0821.2019.01.03","DOIUrl":"https://doi.org/10.20998/0821.2019.01.03","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76909874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CONDITIONS OF FORMATION AND PHYSICO-CHEMICAL CHARACTERISTICS OF LITHIUM COORDINATION NITRATES OF LANTANOIDES LI3[LN2(NO3)9]∙3H2O (LN–LA–ND)","authors":"O. Dryuchko, D. Storozhenko, N. Bunyakina, I. Ivanytska, V. Khaniukov, K. Kytaihora","doi":"10.20998/0821.2019.01.08","DOIUrl":"https://doi.org/10.20998/0821.2019.01.08","url":null,"abstract":"Single-crystal samples were synthesized and a complex physicochemical characterization of the lithium coordination nitrates of the rare-earth elements of the cerium subgroup of the isostructural series Li 3 [Ln 2 (NO 3 ) 9 ]∙3H 2 O (Ln – La–Nd) was carried out in order to obtain reliable knowledge of the joint behavior of the constituent components and features of transformations in the systems of nitrate precursors during the formation with thermal activation (25–1000  o C) of multicomponent oxide REE-containing functional materials for various purposes with structure perovskite, garnet according to modern technologies with reproducible perfect stable properties. It has been revealed that the structure of this type of compounds is based on rare-earth oxygen polyhedra in one way or another connected in space. Ln 3+ ions play a dominant role in the complexation process, showing high coordination numbers of 12. The individuality of Ln-complexes in coordination nitrates is manifested: in a limited set of Ln-polyhedra; in the tendency of the complexing ion to create around itself a symmetrically organized coordination sphere; that the complexes with different composition and stoichiometry may correspond to the same, although significantly distorted coordination polyhedra. Li + cations in the structure formation of alkaline rare-earth nitrates can have a significant effect on the shape of Ln 3+ -polyhedra and on the spatial packing of their construction. The data obtained give a good reason to assume that the process of decomposition of crystalline alkaline rare-earth nitrates in technological objects during thermal activation begins with the breaking of alkaline metal-oxygen bonds. This fact is confirmed by the results of studies on the behavior of the above compounds in the range of 25–1000 °C by thermographic means. Thermograms of the samples are characterized by two, in addition to the initial state, temperature ranges of mass stabilization, corresponding to the formation of anhydrous complex nitrates and their thermolysis products at temperatures above 900 °C. The predominant phase of the final products is – LiLnO 2 .","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79567414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ELECTROCHEMICAL SYNTHESIS OF POROUS CRYSTALLINE TANTAL OXIDE","authors":"S. Vodolazhchenko, L. V. Lyashok, S. Deribo, V. Gomozov","doi":"10.20998/0821.2019.01.02","DOIUrl":"https://doi.org/10.20998/0821.2019.01.02","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82433131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THERMODYNAMICS, STATIC AND KINETICS OF SORBTION ON NATURAL SORBENTS","authors":"J. Gumnitsky, V. Sabadash","doi":"10.20998/0821.2019.01.06","DOIUrl":"https://doi.org/10.20998/0821.2019.01.06","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76940689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEVELOPMENT OF NEW FORMS OF CATALYTIC ELEMENTS IN AMMONIA OXIDATION REACTORS WITH A FIXED GRANULAR BED","authors":"N. Masalitina, A. Savenkov, O. Bliznjuk, Olexandr Ogurtsov, Mikola Fedosovych Kleshchev","doi":"10.20998/0821.2019.01.10","DOIUrl":"https://doi.org/10.20998/0821.2019.01.10","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86734324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ACTIVATION OF POROUS GRAPHITE ELECTRODES","authors":"K. Rutkovska, A. Tulskaya, I. Senkevich, A. Brovin, Aleksandr Yurievych Belozerov","doi":"10.20998/0821.2019.01.09","DOIUrl":"https://doi.org/10.20998/0821.2019.01.09","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82121459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"OBTAINING AND PROPERTIES OF CERAMIC PIGMENTS ON THE BASIS OF SPENT CATALYSTS","authors":"S. Avina, G. S. Pryvalova, O. Kobziev, Viktoria Dmytrivna Shtepa","doi":"10.20998/0821.2019.01.04","DOIUrl":"https://doi.org/10.20998/0821.2019.01.04","url":null,"abstract":"","PeriodicalId":9407,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Chemistry, Chemical Technology and Ecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81024669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}