• Recovery of used acetic acid via sulfuric acid 

  Raiymbekov, Y.B.; Besterekov, U.; Abdurazova, P.A.; Nazarbek, U.B.; Pochitalkina, I.A. (KU Publ., 2021-12-30)

  Kazakhstan has a huge phosphate raw material base, where the basis is made up of micro-grained phosphate ores of the Karatau basin. The depletion of reserves of high-quality commercial ores leads to the search for new ...
• Synthesis of a hydrophilic derivative of ecdysterone and development of its water-soluble form 

  Kozhanova, A.M.; Temirgaziyev, B.S.; Zhanarbek, A.; Tuleuov, B.I.; Seilkhanov, T.M.; Adekenov, S.M. (KU Publ., 2021-12-30)

  The article presents materials on the isolation of ecdysterone substance from medicinal plant raw materials Silene wolgensis (Hornem.) Bess. ex. Spreng (Volga smolyovka). For the first time, the optimization of the method ...
• Production of electrolytic copper from Zhezkazgan Processing Plant tailings leaching solutions using a hydro-impulse discharge 

  Mustafin, Ye.S.; Omarov, Kh.B.; Borsynbaev, A.S.; Havlichek, D.; Pudov, A.M.; Shuyev, N.V. (KU Publ., 2021-12-30)

  The article presents materials on the isolation of ecdysterone substance from medicinal plant raw materials Silene wolgensis (Hornem.) Bess. ex. Spreng (Volga smolyovka). For the first time, the optimization of the method ...
• Alkali-activated metallurgical slag as a sustainable adsorbent 

  Amerkhanova, Sh.K.; Uali, А.S.; Shlyapov, R.M.; Belgibayeva, D.S. (KU Publ., 2021-12-30)

  This paper is devoted to obtaining a zeolite-containing sorbent based on metallurgical waste — slag. The synthesis of zeolite adsorbent from ash and slag was carried out by hydrochemical and thermal treatment. The ...
• Preparation and electrochemical characterization of TiO2 as an anode material for magnesium-ion batteries 

  Abildina, A.K.; Avchukir, K.; Jumanova, R. Zh.; Beiseyeva, A.N.; Rakhymbay, G.S.; Argimbayeva, A.M. (KU Publ., 2021-12-30)

  Anode on the basis of titanium dioxide powder was made. Its morphological characteristics were investigated using ellipsometry, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray ...
• Optimization of the preparation method of a mechanically strong carbon electrode 

  Abdimomyn, S.; Abduakhytova, D.; Atchabarova, A.; Turdean, G.L.; Tokpayev, R.; Kishibayev, K.; Kurbatov, А.; Nauryzbayev, M. (KU Publ., 2021-12-30)

  Nowadays, a strategy for the utilization of secondary resources to obtain valuable components is actual. It will lead to the most rational use of natural resources and environmental protection. Electrochemical methods are ...
• Synthesis and characterization of a new magnetic composite MnFe2O4/clay based on a natural clay obtained from Turkestan deposit 

  Baimuratova, Zh.A.; Kalmakhanova, M.S.; Massalimova, B.K.; Nurlibaeva, A.A.; Kulazhanova, A.S.; Diaz de Tuesta, J.L.; Gomes, H.T. (KU Publ., 2021-12-30)

  The work is devoted to the development of a new method for the synthesis of magnetic composites based on manganese ferrite on a natural clay, coupling with their physico-chemical characterization. In the study, a natural ...
• Acid dissolution of neodymium magnet Nd-Fe-B in different conditions 

  Ismailova, A.G.; Akanova, G.Zh.; Kamysbayev, D.Kh. (KU Publ., 2021-12-30)

  The separation of rare-earth elements (REE) from a neodymium magnet has been widely studied last year. During the research it was identified that the waste of computer hard disk contains 25.41 % neodymium, 64.09 % iron, ...
• Invariants of ratio of crystal-mobile, liquid-mobile, and vaporized chaotized particles in solid, liquid, and gas states of substance 

  Malyshev, V.P.; Makasheva, A.M.; Bekbayeva, L.A. (KU Publ., 2021-12-30)

  The authors of the article have developed the concept of chaotic particles based on the Boltzmann distribution over the kinetic energy of the particles’ chaotic motion. This distribution allows to combine the solid, ...
• Development and validation of a novel stability indicating HPLC method for the separation and determination of darolutamide and its impurities in pharmaceutical formulations 

  Kamani, V.G.; Sujatha, M.; Daddala, G.B. (KU Publ., 2021-12-30)

  This study reports for the first time about a stability indicating RP-HPLC method for analysis of darolutamide and its impurities 1, 2, and 3 in bulk and formulations. The separation was achieved on Phenomenex column with ...
• Abnormal activity of functional groups during uranyl ions sorption by polymethacrylic acid-poly-4-vinylpyridine intergel system 

  Jumadilov, T.K.; Utesheva, A.A.; Khimersen, Kh.; Kondaurov, R.G.; Grazulevicius, J.V. (KU Publ., 2021-12-30)

  Uranyl ions sorption by intergel system consisting of polymethacrylic acid hydrogel (hPMAA) and poly-4- vinylpyridine hydrogel (hP4VP) has been studied. First, reciprocal activation of PMAA and P4VP polymeric hydrogels ...
• Optimization of coal tar gas chromatography conditions using probabilistic-deterministic design of experiment 

  Fomin, V.N.; Aynabaev, A.A.; Kaykenov, D.A.; Sadyrbekov, D.T.; Aldabergenova, S.K.; Turovets, M.A.; Kelesbek, N.K. (KU Publ., 2021-12-30)

  The development of physicochemical methods for the analysis of objects of complex composition requires the application of methods of mathematical experiment design. This article investigates the possibility of ...
• Study of uric acid oxidation reaction products in medium of ammonia or primary amines 

  Minakova, А.А.; Chikina, M.V.; Il’yasov, S.G. (KU Publ., 2021-12-30)

  This work is considered in more detail the most important stage of obtaining one of the promising heteroatomic polycyclic compounds 3,7,10-trioxo-2,4,6,8,9,11-hexaaza[3.3.3]propellane (THAP). THAP is a potential compound ...
• Synthesis, quantum-chemical calculations and virtual screening of the alkaloid cytisine derivatives 

  Nurmaganbetov, Zh.S.; Mukusheva, G.K.; Minayeva, Ye.V.; Turdybekov, D.M.; Turdybekov, K.M.; Makhmutova, A.S.; Zhasymbekova, A.R.; Nurkenov, O.A. (KU Publ., 2021-12-30)

  The synthesis of some cytisine derivatives was carried out in the work. The article provides the data of quantum- chemical calculation and virtual screening of the alkaloid cytisine derivatives synthesized. At the same time, ...
• Synthesis and characterization of novel thermo- and salt-sensitive amphoteric terpolymers based on acrylamide derivatives 

  Ayazbayeva, A.Ye.; Shakhvorostov, A.V.; Seilkhanov, T.M.; Aseyev, V.O.; Kudaibergenov, S.E. (KU Publ., 2021-12-30)

  A novel linear amphoteric terpolymers based on neutral monomer — N-isopropylacrylamide (NIPAM), anionic monomer — 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS), and cationic monomer — (3-acrylamidopropyl) ...
• Students’ opinions toward interactive apps used for teaching chemistry 

  Sadykov, T.; Ctrnactova, H.; Kokibasova, G.T. (KU Publ., 2021-09-30)

  The solution of the problem of effective use of apps is not only in the analysis of learning outcomes, but also in consideration of the students’ opinions toward learning chemistry with the help of these applications. ...
• The study of thiadiazole derivatives as potential corrosion inhibitors of low-carbon steel in hydrochloric acid 

  Plotnikova, M.D.; Shein, A.B.; Shcherban, M.G.; Solovyev, A.D. (KU Publ., 2021-09-30)

  The inhibition effect of series of thiadiazole derivatives against the corrosion of mild steel in 15 % HCl was studied by weight-loss method and electrochemical measurements. The experiments were performed on steel St3 ...
• The effect of chemical composition on the biodegradation rate and physical and mechanical properties of polymer composites with lignocellulose fillers 

  Glukhikh, V.V.; Shkuro, A.E.; Krivonogov, P.S. (KU Publ., 2021-09-30)

  The results of TPLC scientific research, practical experience of their preparation, and application as of 2016 are presented in eight volumes of the “Handbook of Composites from Renewable Materials” (2017, John Wiley & ...
• Hydrogenation of polyaromatic compounds over NiCo/chrysotile catalyst 

  Baikenov, M.I.; Aitbekova, D.E.; Balpanova, N.Zh.; Tusipkhan, A.; Baikenova, G.G.; Aubakirov, Y.A.; Brodskiy, A.R.; Fengyun, М.; Makenov, D.K. (KU Publ., 2021-09-30)

  The activity and selectivity of the bimetallic NiCo/chrysotile catalyst during the hydrogenation of model objects (anthracene and phenanthrene) for 1 hour at an initial hydrogen pressure of 3 MPa and a temperature of 400 ...
• Synthesis and properties of double gadolinium tellurites 

  Toibek, A.A.; Rustembekov, K.T.; Kaikenov, D.A.; Stoev, M. (KU Publ., 2021-09-30)

  For the first time, double gadolinium tellurites of the composition GdMIITeO4.5 (MII — Sr, Ba) were synthesized by the solid-phase method. The solid-phase synthesis of samples was carried out from decrepitated gadolinium (III) ...

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