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Academic literature on the topic 'Активність каталітична'
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Journal articles on the topic "Активність каталітична"
Гріщенко, Л. "Каталітична активність модифікованого активованого вугілля в реакції дегідратації нижчих насичених спиртів." Вісник Київського національного університету імені Тараса Шевченка. Хімія, вип. 1 (51) (2015): 57–61.
Find full textГ. Мелікова, Ірада, Аріф Дж. Ефенді, Емір М. Бабаєв, Айтадж М. Салахли, Конул Ш. Мусадзе, Асмет Н. Азизова, and Гусейн М. Фараджев. "КАТАЛІТИЧНЕ ОКИСНЕННЯ ДИХЛОРОМЕТАНА ТА ТЕТРАХЛОРОЕТИЛЕНА НА КАТАЛІЗАТОРАХ ІЗ БЛАГОРОДНИХ МЕТАЛІВ." Journal of Chemistry and Technologies 29, no. 1 (April 26, 2021): 108–16. http://dx.doi.org/10.15421/082110.
Full textKHRUSHCHYK, Khrystyna, and Lidiya BOICHYSHYN. "MODIFICATION OF AMORPHOUS ALLOYS BASED ON ALUMINUM BY OLIGOMERIC COATINGS." Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences 2019, no. 56 (August 28, 2019): 169–77. http://dx.doi.org/10.37827/ntsh.chem.2019.56.169.
Full textKhomenko, D., R. Doroschuk, I. Odarych, I. Raspertova, and R. Lampeka. "CATECHOLASE ACTIVITY OF A COPPER(II) COMPLEX WITH THE 2-(5-(1,2,4)TRIAZOLE-1-ILMETHYL-1H-(1,2,4)-TRIAZOLE-3-IL)-PYRIDYL." Bulletin of Taras Shevchenko National University of Kyiv. Chemistry, no. 1 (57) (2020): 19–22. http://dx.doi.org/10.17721/1728-2209.2020.1(57).5.
Full textTrypolskyi, A., G. Kosmambetova, S. Soloviev, A. Kapran, and P. Strizhak. "МЕТАЛОКСИДНІ КАТАЛІЗАТОРИ НА СТРУКТУРОВАНИХ КЕРАМІЧНИХ НОСІЯХ ДЛЯ НИЗЬКОТЕМПЕРАТУРНОГО СПАЛЮВАННЯ МЕТАНУ." Vidnovluvana energetika, no. 3(58) (September 25, 2019): 91–99. http://dx.doi.org/10.36296/1819-8058.2019.3(58).91-99.
Full textСавицький, О. В., and О. І. Корнелюк. "Комп’ютерне моделювання комплексу гліциризину з протеазою SARS-CoV-2 — мішенню для розробки противірусних препаратів." Reports of the National Academy of Sciences of Ukraine, no. 1 (March 30, 2022): 115–23. http://dx.doi.org/10.15407/dopovidi2022.01.115.
Full textНенастіна, Т., М. Ведь, М. Сахненко, С. Зюбанова, and І. Черепньов. "Електродні матеріали для водневої енергетики." Науковий журнал «Інженерія природокористування», no. 1(15) (October 26, 2020): 6–12. http://dx.doi.org/10.37700/enm.2020.1(15).6-12.
Full textKirienko, S. M., and О. O. Didur. "Вплив рийної активності мікромамалій на ферментативну активність ґрунтів в умовах металургійного виробництва." Biosystems Diversity 18, no. 2 (September 14, 2010): 14–18. http://dx.doi.org/10.15421/011020.
Full textСапронов, Олександр Олександрович, Тетяна Василівна Чернявська, Ганна Вікторівна Сапронова, Віталій Віталійович Соценко, and Антоніо Бертем Да Глорія Де Дауш. "ДОСЛІДЖЕННЯ СТРУКТУРИ МОДИФІКОВАНОЇ ФТАЛІМІДОМ ЕПОКСИДНОЇ МАТРИЦІ МЕТОДОМ ІЧ-СПЕКТРАЛЬНОГО АНАЛІЗУ." Scientific Journal "Metallurgy", no. 1 (July 22, 2021): 53–59. http://dx.doi.org/10.26661/2071-3789-2021-1-07.
Full textІ. Іньшина, Олена, Артур М. Милін, and Володимир В. Брей. "ДЕГІДРИТАЦІЯ СОРБІТОЛУ ДО ІЗОСОРБІДУ БЕЗ РОЗЧИННИКА НА СУЛЬФОКАТІОНІТАХ." Journal of Chemistry and Technologies 29, no. 3 (October 27, 2021): 449–55. http://dx.doi.org/10.15421/jchemtech.v29i3.231771.
Full textDissertations / Theses on the topic "Активність каталітична"
Смирнова, Олександра Юріївна, and Вікторія Володимирівна Штефан. "Каталітична активність церійвмісних оксидних шарів на сплаві титану ОТ4-0." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48587.
Full textТульська, Альона Геннадіївна, and Борис Іванович Байрачний. "Каталітична активність платини при деполяризації SO₂ анодного процесу при електролізі сульфатної кислоти." Thesis, НТУ "ХПІ", 2013. http://repository.kpi.kharkov.ua/handle/KhPI-Press/20815.
Full textКовальова, А. А., Є. С. Лазаренко, М. О. Подолян, and Борис Іванович Байрачний. "Електричні властивості оксидів титану, міді та олова." Thesis, НТУ "ХПІ", 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/20838.
Full textКозяр, М. О., М. В. Ведь, and М. О. Славкова. "Каталітична активність сплаву кобальт-молібден-цирконій у реакції окислення СО до СО[2]." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45325.
Full textЛуценко, Л. В. "Фізико-хімічні властивості та каталітична активність Со- та Со-Рd нанесених систем в реакції окиснення СО." Diss. of Candidate of Chemical Sciences, КНУТШ, 2004.
Find full textФіліппова, Л. В. "Каталітична активність в окисненні СО та фізико-хімічні властивості Fe-Mn та Fe-Cu оксидних систем." Diss. of Candidate of Chemical Sciences, КНУТШ, 2003.
Find full textАндрейцева, М. В. "Дослідження MnO2 як каталізатора в метал-повітряних джерелах струму." Thesis, Київський національний університет технологій та дизайну, 2017. https://er.knutd.edu.ua/handle/123456789/8709.
Full textБулгакова, Анастасія Сергіївна. "Електрохімічний імпеданс композиційного покриття Cо-Mо-TіO₂." Thesis, Харківський національний університет міського господарства ім. О. М. Бекетова, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/43143.
Full textГапон, Юліана Костянтинівна, Микола Дмитрович Сахненко, Марина Віталіївна Ведь, and Т. О. Ненастіна. "Ресурсозаощаджувальна екологічно безпечна технологія нанесення покриттів сплавом кобальт-молібден-вольфрам з високими функціональними властивостями." Thesis, Государственное предприятие "Украинский научно-технический центр металлургической промышленности "Энергосталь", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33264.
Full textМайзеліс, Антоніна Олександрівна. "Електрохімічні функціональні покриття з мікро- і нанорозмірними Cu, Sn, Ni, Zn-вмісними шарами керованого фазового складу." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48963.
Full textThesis for the Doctor’s of Science degree in Technical Sciences by speciality 05.17.03 – Technical Electrochemistry (16 – Chemical and Bioengineering). – National Technical University “Kharkiv Polytechnical Institute”, 2020. The object of study is electrochemical processes of formation of coatings consisting of micro- and nanosized Cu, Sn, Ni, Zn-containing layers of controlled phase composition. The subject of the study is the kinetic regularities of the processes of formation of Cu, Sn, Ni, Zn-containing layers of coatings of controlled phase composition in polyligand electrolytes and their physical-mechanical, anticorrosive and catalytic properties. The thesis is devoted to the development of theoretical principles of increasing the functional properties of surface materials by alternating electrodeposition of nano and micro-sized layers of Cu, Sn, Ni, Zn-containing alloys. The main principle is the priority of use of polyligand electrolytes with the creation of conditions for the deposition of layers of different phase composition (LDPC) in order to influence the micro- and macro structure of sediments and improve the barrier anticorrosive and mechanical properties of coatings by periodically changing nucleation conditions and creation of intermetallics-enriched interlayer boundaries. Based on the determination of kinetic regularities of electrode processes in the М-P₂O₇⁴⁻-Cit³⁻, М-P₂O₇⁴⁻-Y⁴⁻, M-NH₃-Gly systems, the advantage of using polyligand electrolytes for monolithic electrolyte coatings for LDPC coatings has been proved due to possibility of depositing thin layers of different phase composition from one electrolyte, the instantaneous mechanism of nucleation with the formation of thin continuous films by layer-by-layer deposition of alloys, expanding the range of allowable current densities of dissolution of metals in the combined anodes in terms of periodic changes in current density in a wide range of values. It is determined that the compatible discharge of ions of all metals in the studied polyligand electrolytes is accompanied by concentration complications with the presence of adsorption phenomena at low current density of alloy film deposition and influence of kinetic constraints associated with the chemical stage of complex dissociation are observed at high current density. Based on the analysis of model polarization dependences obtained by nonlinear potential change according to experimentally obtained data, a new method of quantitative determination of contact exchange parameters in electrolytes is proposed. The clear correspondence of these dependences to the experimentally determined change in the potential of the total process with a discreteness of up to 1 mV and 0.05 s, taking into account its direction and speed change, allows to increase the accuracy of determining the parameters of conjugate processes. The algorithm for quantitative determination of the elemental and phase composition of Zn-Ni alloy films on the basis of the proposed mechanism of anodic dissolution of thin layers of Zn-Ni alloy under conditions of stripping voltammetry is substantiated. In the process of anodic treatment of thin layers of Zn-Ni alloy in alkaline ammonia-glycinate solution, sequential dissolution of zinc phase, zinc from δ- and γ-phase of alloy of different structure, accompanied by nickel-enriched residue and matrix nickel dissolution. The relationship between the content of intermetallic compounds and the initial structure of the γ-phase with the composition of the nickel-enriched residue on the electrode is determined, which allows increase the accuracy of quantitative determination of the composition of the layers. The sequential oxidation peaks of the phases present in Cu-Zn, Cu-Sn and Zn-Ni alloys deposited from the investigated electrolytes during voltammetric dissolution of the alloy films were identified and confirmed by XRD. The dependences of the chemical and phase composition of the alloy layers on the electrolyte composition and the electrolysis regime using the method of stripping voltammetry are established. The design of the architecture of coatings with layers of different phase composition was performed on the basis of analysis of changes in the phase composition of alloy layers in thickness, the effect of alternating deposition of alloy layers on the coating composition of LDPC, certain variants of phase composition of belayer. The constituent layers consist of the following phases: (Cu-Zn)base - mainly α-phase, (Cu-Zn)add – (α, β-, ε- and γ-phases, and Zn); (Cu-Sn)base – in addition to α-phase contains ε- and η-phases, do not contain Sn-phase, (Cu-Sn)add - in addition to α-phase contain Sn-phase and η-phase, and ε-phase is absent; (Zn-Ni)base contain the Zn phase, δ- and γ-phases, (Zn-Ni)add - additionally contain X-ray amorphous β-phase and Ni-phase. Analysis of XRD coatings with layers of different phase composition showed the presence of a significant amount of intermetallics in the composition of coatings with the size of the regions of coherent scattering for the main phases 9-10 nm. The SEM method shows that the developed coatings have a uniform and fine-crystalline surface structure with dense packing of grains and in the absence of pores. The relationship between the nature of the influence of the electrolyte composition, electrolysis regime and architecture of coatings [(M₁-M₂)base/(M₁-M₂)add]n and their microhardness and corrosion resistance is determined. It is proved that the indicators of corrosion resistance and microhardness of the developed coatings exceed the indicators of single-layer coatings by base alloys, which are deposited in the same electrolytes. The microhardness is extremely dependent on the coating architecture. The maximum microhardness of the developed coatings is 397-428 HV for [(Cu-Zn)base/(Cu-Zn)add]n, 476-511 HV for [(Cu-Sn)base/(Cu-Sn)add]n, and 700-864 HV for [(Zn-Ni)base/(Zn-Ni)add]n at a bilayer thickness of 20-125 nm. It was found that the cathodic vs. steel LDPC coating, consisting of Cu-Zn and Cu-Sn alloys are non-porous at a thickness of 0.63 μm and 2.3 μm, respectively. In conditions of prolonged exposure in a solution of 3.5% NaCl anode coatings [(Zn-Ni)base/(Zn-Ni)add]n retain protective properties on steel 1.5-2.6 times longer compared to single-layer coatings. The influence of electrolyte composition, potential and deposition time sublayers deposition [(M₁-M₂-(M₃))/(Mi-Mj(OH)₂)]n (i = 1-3) coatings on the parameters of their catalytic activity in test hydrogen evolution reactions and oxidation of organic substances and performance characteristics are was established. It was determined that the obtained electrodes show greater corrosion resistance and have a higher catalytic activity, compared with electrodes coated with the corresponding alloys: [(Ni-Cu)/(Mi-Mi(OH)₂]n after cathodic treatment, and [(Ni-Zn-Cu)/(Mi-Mi(OH)₂)]n, after chemical and electrochemical treatment – in hydrogen evolution reaction in alkaline solution; [(Ni-Cu)/(Mi-Mi(OH)₂-MiOOH)]n after cycling in the region of potentials for the reverse transition of hydroxide to oxyhydroxide – in the oxidation reactions of alcohols and glucose, coating [(Sn-Sb)/(M-MₓОᵧ)]n, after dehydration and anodic oxidation – in the oxidation reaction of phenol. According to the results of scanning electron microscopy, the hierarchically developed surface of the electrodes, consisting of dendrites covered with conglomerates of globular shape was identified. It was found that the [(Ni-Zn-Cu)/(Mi-Mi(OH)₂)]n coating with a lower content of zinc phase and γ-phase, after treatment in an alkali solution, have a lower development coefficient, but a higher current density in hydrogen evolution reaction (1.81 mA/cm² vs. 1.28 mA/cm²), lower ohmic resistance and more mechanically strong hierarchically developed surface. It was found that the electrode coated with [Ni(Cu)/(Mi-Mi(OH)₂-MiOOH)]n with micro-dimensional layers, in comparison with the electrode coated with nanoscale layers, has a higher heterogeneous velocity constant (0.53 compared with 0.36 s⁻¹) and the best operational properties, due to creation of a strong microshell of alloy at a nanostructured surface. Sensory properties of the electrode coated with [(Ni-Cu)/(Mi-Mi(OH)₂-MiOOH)]n are detected: hypersensitivity at a glucose concentration up to 50 μmol/dm³ 13986±9 μA(mmol/dm³)⁻¹ cm⁻², sensitivity in the range from 0.05 mmol/dm³ to 1.65 mmol/dm³ 2921±1 μA (mmol/dm³)⁻¹ cm⁻², up to 6,3 mmol/dm³ (at +0.6 V) – 1667±4 μA (mmol/dm³)⁻¹ cm⁻². Technological parameters of electrochemical processes of resource-saving formation of micro- and nanostructured protective coatings of [(Cu-Zn)base/(Cu-Zn)add], [(Cu-Sn)base/(Cu-Sn)add]n and [(Zn-Ni)base/(Zn-Ni)add]n, and non-platinum catalytically active electrode materials [(Ni-Cu)/[Mi-Mi(OH)₂]n, [(Ni-Zn-Cu)/(Mi-Mi(OH)₂)], [(Ni-Cu)/(Mi-Mi(OH)₂)MiOOH)]n and [(Sn-Sb)/(Mi-MₓОᵧ)]; additional layer of Zn-Ni alloy in electrolyzers with low concentrated electrolytes to protect the zinc coating from corrosion. The combination of functions of electrodeposition of additional layers of alloys, anode processing and electroextraction of metals is taken into account, which allows saving production areas, metals, water and electricity. High mechanical and anticorrosive properties of coatings with LDPC were confirmed by LSC "FED", SPE "Ecopolymer", Kharkiv Aero Club named by V. S. Grizodubova APO OPD Ukraine. Technological processes of electrodeposition of protective and catalytic act coatings were tested and recommended for the implementation at SScPE "Kommunar Corporation" and SE "Malyshev Plant".