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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8331-2024-60-2-121-128</article-id><article-id custom-type="elpub" pub-id-type="custom">vestich-878</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>НЕОРГАНИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INORGANIC CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Исследование свойств алюмофосфатных растворов и кристаллизующихся из них продуктов</article-title><trans-title-group xml:lang="en"><trans-title>Investigation of the properties of alumophosphate solutions and products crystallized from them</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ещенко</surname><given-names>Л. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Eshchenko</surname><given-names>L. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ещенко Людмила Семеновна – доктор технических наук, профессор, профессор кафедры</p><p>ул. Свердлова 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Eshchenko Lyudmila S. – D. Sc. (Engineering), Professor, Professor of the Department</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">yeshchanko@belstu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Понятовский</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Paniatouski</surname><given-names>А. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Понятовский Олег Витальевич – магистр, аспирант</p><p>ул. Свердлова 13а, 220006, г. Минск</p></bio><bio xml:lang="en"><p>Paniatouski Aleh V. – M. Sc., Postgraduate Student</p><p>13a, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">oleg.ponyatovskiy@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный технологический университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Technological University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>24</day><month>05</month><year>2024</year></pub-date><volume>60</volume><issue>2</issue><fpage>121</fpage><lpage>128</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ещенко Л.С., Понятовский О.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ещенко Л.С., Понятовский О.В.</copyright-holder><copyright-holder xml:lang="en">Eshchenko L.S., Paniatouski А.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestichem.belnauka.by/jour/article/view/878">https://vestichem.belnauka.by/jour/article/view/878</self-uri><abstract><p>Исследованы физико-химические свойства свежеприготовленных алюмофосфатных растворов, полученных в системе Al(OH)3 – H3PO4 – H2O с мольным соотношением n(Al2O3) : n(P2O5) = 1,0 : 2,75. Изучены плотность, температурная зависимость динамической вязкости исследуемых растворов с концентрацией P2O5 300–485 г/л. Рассчитаны значения кажущейся энергии активации вязкого течения (Eη) алюмофосфатных растворов и установлен интервал концентраций (390–420 г/л P2O5), в котором Eη почти постоянная и составляет 15,0 кДж/моль. Высказано предположение, что изменение энергии активации вязкого течения алюмофосфатных растворов обусловлено их структурой, определяемой составом фосфатных комплексов алюминия. Показано влияние вязкостных свойств алюмофосфатных растворов и их концентрации на процесс кристаллизации гидратированного алюмофосфата, в частности продолжительность индукционного периода, скорость фазообразования.</p></abstract><trans-abstract xml:lang="en"><p>The physicochemical properties of freshly prepared alumophosphate solutions obtained in the Al(OH)3 – H3PO4 – H2O system with the molar ratio n(Al2O3) : n(P2O5) = 1.0 : 2.75 have been investigated. The density and temperature dependence of the dynamic viscosity of the studied solutions with a concentration of P2O5 300–485 g/l were studied. The values of the apparent activation energy of the viscous flow (Eη) of alumophosphate solutions are calculated and the concentration range (390–420 g/l P2O5) is established, in which Eη is practically constant and is 15.0 kJ/mol. It is suggested that the change in the activation energy of the viscous flow of alumophosphate solutions is due to their structure determined by the composition of aluminum phosphate complexes. The influence of the viscosity properties of alumophosphate solutions and their concentration on the crystallization process of hydrated alumophosphate, in particular, the duration of the induction period and the rate of phase formation, is shown.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>алюмофосфатный раствор</kwd><kwd>энергия активации вязкого течения</kwd><kwd>вязкостные свойства</kwd><kwd>фазообразование</kwd><kwd>алюмофосфатные комплексы</kwd><kwd>индукционный период</kwd></kwd-group><kwd-group xml:lang="en"><kwd>alumophosphate solution</kwd><kwd>activation energy of viscous flow</kwd><kwd>viscosity properties</kwd><kwd>phase formation</kwd><kwd>alumophosphate complexes</kwd><kwd>induction period</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Hao, T. Electrorheological Fluids. The Non-aqueous Suspensions / T. 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