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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">kemsu</journal-id><journal-title-group><journal-title xml:lang="ru">СибСкрипт</journal-title><trans-title-group xml:lang="en"><trans-title>SibScript</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-2122</issn><issn pub-type="epub">2949-2092</issn><publisher><publisher-name>Kemerovo State University</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">kemsu-307</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>Химия</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>ПРЯМОЕ КАТАЛИТИЧЕСКОЕ ВОССТАНОВЛЕНИЕ SO2 СИНТЕЗ ГАЗОМ НА Fe-Mn ГРАНУЛИРОВАННЫХ И БЛОЧНЫХ КАТАЛИЗАТОРАХ</article-title><trans-title-group xml:lang="en"><trans-title>DIRECT CATALYTIC REDUCTION OF SO2BY SYNTHESIS GASOVER GRANULATED AND MONOLITHIC Fe-Mn CATALYSTS</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>Шикина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shikina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шикина Надежда Васильевна – ведущий инженер</p></bio><bio xml:lang="en"><p>Nadezhda V. Shikina – leading engineer</p></bio><email xlink:type="simple">shikina@catalysis.ru</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>Хайрулин</surname><given-names>С. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Khairulin</surname><given-names>S. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хайрулин Сергей Рифович – кандидат химических наук, старший научный сотрудник</p></bio><bio xml:lang="en"><p>Sergey R. Khairulin – Candidate of Chemistry, Senior Research Associate</p></bio><email xlink:type="simple">sergk@catalysis.ru</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>Яшник</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yashnik</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яшник Светлана Анатольевна – кандидат химических наук, старший научный сотрудник</p></bio><bio xml:lang="en"><p>Svetlana A. Yashnik – Candidate of Chemistry, Senior Research Associate</p></bio><email xlink:type="simple">yashnik@catalysis.ru</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>Гаврилова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gavrilovа</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гаврилова Анна Алексеевна – инженер</p></bio><bio xml:lang="en"><p>Anna A. Gavrilova – engineer pan&gt;</p></bio><email xlink:type="simple">gavraa@catalysis.ru</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>Исмагилов</surname><given-names>З. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Ismagilov</surname><given-names>Z. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Исмагилов Зинфер Ришатович – член-корреспондент РАН, директор ИУХМ СО РАН, заведующий Лабораторией экологического катализа ИК СО РАН</p></bio><bio xml:lang="en"><p>Zinfer R. Ismagilov – corresponding member of the Academy of Sciences of Russia, Director of the Institute of Coal Chemistry and Material Science of SB RAS, Kemerovo; Head of the Laboratory of Environmental Catalysis, Boreskov Institute of Catalysis of SBRAS, Novosibirsk.</p></bio><email xlink:type="simple">zinfer1@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт катализа имени Г. К. Борескова СО РАН, Новосибирск</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Boreskov Institute of Catalysis of SBRAS, Novosibirsk</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт углехимии и химического материаловедения СО РАН, Кемерово; &#13;
Институт катализа имени Г. К. Борескова СО РАН, Новосибирск</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Coal Chemistry and Material Science of SB RAS, Kemerovo; &#13;
Boreskov Institute of Catalysis of SBRAS, Novosibirsk</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>28</day><month>02</month><year>2016</year></pub-date><volume>0</volume><issue>4-3</issue><fpage>252</fpage><lpage>258</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шикина Н.В., Хайрулин С.Р., Яшник С.А., Гаврилова А.А., Исмагилов З.Р., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Шикина Н.В., Хайрулин С.Р., Яшник С.А., Гаврилова А.А., Исмагилов З.Р.</copyright-holder><copyright-holder xml:lang="en">Shikina N.V., Khairulin S.R., Yashnik S.A., Gavrilovа A.A., Ismagilov Z.R.</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://www.sibscript.ru/jour/article/view/307">https://www.sibscript.ru/jour/article/view/307</self-uri><abstract><p>Разработаны методы приготовления гранулированных и блочных Fe-Mn катализаторов на основе руды железомарганцевых конкреций. Исследованы текстурные, структурные и прочностные свойства катализаторов. Показано, что катализаторы характеризуются развитой пористой структурой и высокой механической прочностью. Катализаторы испытаны в реакции DeSOx синтез-газомпри стехиометрическом соотношении SO2/(CО+H2)=0,5. Исследовано влияние предварительного сульфидирования катализаторов, влияние геометрической формы образцов (гранулы и блок) на каталитические характеристики. Показано, что Fe-Mn катализаторы c оксидной и сульфидной формой активных компонентов активны в реакции DeSOx синтез-газом и могут селективно восстанавливать SO2 с конверсией более 90 %</p></abstract><trans-abstract xml:lang="en"><p>Preparation methods of granulated and monolithic Fe-Mn catalysts on the base of ferromanganese nodules were developed. The textural, structural and strength properties of catalysts were studied. It was shown that the catalysts have a developed pore structure and high mechanical strength. The catalysts were tested in the DeSOx reaction with synthesis gas at a stoichiometric ratio SO2/(CО+H2)=0,5. The effect of the preliminary catalysts sulfidizing and geometric shape of samples (granules and monolith) on the catalytic properties were investigated. The testing showed that Fe-Mn catalysts with the oxide or sulfide form of active components are active in DeSOx reaction with synthesis gas and can selectively reduce SO2 with a conversion above 90 %.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>катализаторы</kwd><kwd>блоки</kwd><kwd>приготовление</kwd><kwd>DeSOx</kwd><kwd>синтез-газ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>catalysts</kwd><kwd>monoliths</kwd><kwd>preparation</kwd><kwd>DeSOx</kwd><kwd>synthesis gas</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">Иванова А. М., Смирнов А. Н., Рогов В. С., Мотов А. П., Никольская Н. С., Пальшин К. В. Шельфовые железомарганцевые конкреции – новый вид минерального сырья // Минеральные ресурсы России. 2006. № 6. C. 14.</mixed-citation><mixed-citation xml:lang="en">Иванова А. М., Смирнов А. Н., Рогов В. С., Мотов А. П., Никольская Н. С., Пальшин К. В. Шельфовые железомарганцевые конкреции – новый вид минерального сырья // Минеральные ресурсы России. 2006. № 6. C. 14.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Исмагилов З. Р., Керженцев М. А. Экологически чистое сжигание топлив и каталитическая очистка дымовых газов ТЭС от оксидов азота: состояние и перспективы // Ж. Всес. хим. о-ва им. Д. И. Менделеева. 1990. Т. 35. № 1. C. 43 – 54.</mixed-citation><mixed-citation xml:lang="en">Исмагилов З. Р., Керженцев М. А. Экологически чистое сжигание топлив и каталитическая очистка дымовых газов ТЭС от оксидов азота: состояние и перспективы // Ж. Всес. хим. о-ва им. Д. И. Менделеева. 1990. Т. 35. № 1. C. 43 – 54.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Исмагилов З. Р., Керженцев М. А., Хайрулин С. Р. Каталитическая очистка геотермального пара от сероводорода // Химия в интересах устойчивого развития.1999. Т. 7. № 4. С. 443 – 449.</mixed-citation><mixed-citation xml:lang="en">Исмагилов З. Р., Керженцев М. А., Хайрулин С. Р. Каталитическая очистка геотермального пара от сероводорода // Химия в интересах устойчивого развития.1999. Т. 7. № 4. С. 443 – 449.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Исмагилов З. Р., Керженцев М. А., Хайрулин С. Р., Кузнецов В. В. Одностадийные каталитические методы очистки кислых газов от сероводорода // Химия в интересах устойчивого развития. 1999. Т. 7. № 4. С. 375 – 396.</mixed-citation><mixed-citation xml:lang="en">Исмагилов З. Р., Керженцев М. А., Хайрулин С. Р., Кузнецов В. В. Одностадийные каталитические методы очистки кислых газов от сероводорода // Химия в интересах устойчивого развития. 1999. Т. 7. № 4. С. 375 – 396.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Шикина Н. В., Хайрулин С. Р., Кузнецов В. В., Исмагилов З. Р. Разработка и исследование адсорбентов на основе рудных материалов для очистки дымовых газов ТЭС от диоксида серы // Химия в интересах устойчивого развития. 2015. № 23. С. 199 – 208.</mixed-citation><mixed-citation xml:lang="en">Шикина Н. В., Хайрулин С. Р., Кузнецов В. В., Исмагилов З. Р. Разработка и исследование адсорбентов на основе рудных материалов для очистки дымовых газов ТЭС от диоксида серы // Химия в интересах устойчивого развития. 2015. № 23. С. 199 – 208.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Dou B., Pan W., Jin Q., Wanga W., Li Y. Prediction of SO2 removal efficiency for wet Flue Gas Desulfurization // Energy Convers. Manage. 2009. Vol. 50. P. 2547 – 2553.</mixed-citation><mixed-citation xml:lang="en">Dou B., Pan W., Jin Q., Wanga W., Li Y. Prediction of SO2 removal efficiency for wet Flue Gas Desulfurization // Energy Convers. Manage. 2009. Vol. 50. P. 2547 – 2553.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Flytzani-Stephanopoulos M., Zhu T., Li Yu. Ceria based catalysts for the recovery of elemental sulfur from SO2-laden gas streams // Catal. Today. 2000. Vol. 62. P. 145 – 158.</mixed-citation><mixed-citation xml:lang="en">Flytzani-Stephanopoulos M., Zhu T., Li Yu. Ceria based catalysts for the recovery of elemental sulfur from SO2-laden gas streams // Catal. Today. 2000. Vol. 62. P. 145 – 158.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Gomez A., Fueyo N., Tomas A. Detailed modelling of a flue-gas desulfurization plant // Comput. Chem. Eng. 2007. Vol. 31. P. 1419 – 1431.</mixed-citation><mixed-citation xml:lang="en">Gomez A., Fueyo N., Tomas A. Detailed modelling of a flue-gas desulfurization plant // Comput. Chem. Eng. 2007. Vol. 31. P. 1419 – 1431.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Han G. B., Park N-K., Lee J. D., Ryu S. O., Lee T. J. A study on the characteristics of the SO2 reduction using coal gas over SnO2-ZrO2 catalysts // Catal. Today. 2006. Vol. 111. P. 205 – 211. 10. Han G. B., Park N. K., Yoon S. H., Lee T. J. Catalytic reduction of sulfur dioxide with carbon monoxide over tin dioxide for direct sulfur recovery process // Chemosphere. 2008. Vol. 72. P. 1744 – 1750.</mixed-citation><mixed-citation xml:lang="en">Han G. B., Park N-K., Lee J. D., Ryu S. O., Lee T. J. A study on the characteristics of the SO2 reduction using coal gas over SnO2-ZrO2 catalysts // Catal. Today. 2006. Vol. 111. P. 205 – 211. 10. Han G. B., Park N. K., Yoon S. H., Lee T. J. Catalytic reduction of sulfur dioxide with carbon monoxide over tin dioxide for direct sulfur recovery process // Chemosphere. 2008. Vol. 72. P. 1744 – 1750.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Han G. B., Park N. K., Yoon S. H., Lee T. J., Yoon K. J. Synergistic catalysis effect in SO2 reduction by CO over Sn-Zr-based catalysts // Applied Catalysis A: General. 2008. Vol. 337. P. 29 – 38.</mixed-citation><mixed-citation xml:lang="en">Han G. B., Park N. K., Yoon S. H., Lee T. J., Yoon K. J. Synergistic catalysis effect in SO2 reduction by CO over Sn-Zr-based catalysts // Applied Catalysis A: General. 2008. Vol. 337. P. 29 – 38.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Ismagilov Z. R., Kerzhentsev M. A. Catalytic fuel combustion – away of reducing emission of nitrogen-oxides // Catal. Rev. Scie. Eng. 1990.Vol. 32. № 1–2. P. 51 – 103.</mixed-citation><mixed-citation xml:lang="en">Ismagilov Z. R., Kerzhentsev M. A. Catalytic fuel combustion – away of reducing emission of nitrogen-oxides // Catal. Rev. Scie. Eng. 1990.Vol. 32. № 1–2. P. 51 – 103.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Kallinikos L. E., Farsari E. I., Spartinos D. N., Papayannakos N. G. Simulation of the operation of an industrial wet flue gas desulfurization system // Fuel Process. Technol. 2010. Vol. 91. № 12. P. 1794 – 1802.</mixed-citation><mixed-citation xml:lang="en">Kallinikos L. E., Farsari E. I., Spartinos D. N., Papayannakos N. G. Simulation of the operation of an industrial wet flue gas desulfurization system // Fuel Process. Technol. 2010. Vol. 91. № 12. P. 1794 – 1802.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">KaloidasV. E., Papayannakos N. G. Hydrogen production from the decomposition of hydrogen sulphide. Equilibrium studies on the system H2S/ H2/Si, (i = 1,…,8) in the gas phase // Int. J. Hydrogen Energy. 1987. Vol. 12. P. 403 – 409.</mixed-citation><mixed-citation xml:lang="en">KaloidasV. E., Papayannakos N. G. Hydrogen production from the decomposition of hydrogen sulphide. Equilibrium studies on the system H2S/ H2/Si, (i = 1,…,8) in the gas phase // Int. J. Hydrogen Energy. 1987. Vol. 12. P. 403 – 409.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Kameda T., Kodama A., Yoshioka T. Simultaneous removal of SO2 and NO2 using a Mg-Al oxide slurry treatment // Chemosphere. 2013.Vol. 93. P. 2889 – 2893.</mixed-citation><mixed-citation xml:lang="en">Kameda T., Kodama A., Yoshioka T. Simultaneous removal of SO2 and NO2 using a Mg-Al oxide slurry treatment // Chemosphere. 2013.Vol. 93. P. 2889 – 2893.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">King M. J., Davenport W. G., Moats M. S. Wet sulfuric acid process fundamentals // Sulfuric Acid Manufacture (Second Edition). Analysis, Control and Optimization. Copyright © 2013 Elsevier Ltd. P. 295 – 311.</mixed-citation><mixed-citation xml:lang="en">King M. J., Davenport W. G., Moats M. S. Wet sulfuric acid process fundamentals // Sulfuric Acid Manufacture (Second Edition). Analysis, Control and Optimization. Copyright © 2013 Elsevier Ltd. P. 295 – 311.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Koutsopoulos S., Rasmussen S. B., Eriksen K. M., Fehrmann R. The role of support and promoter on the oxidation of sulfur dioxide using platinum based catalysts// Appl. Catal. A: General. 2006. Vol. 306. P. 142 – 148.</mixed-citation><mixed-citation xml:lang="en">Koutsopoulos S., Rasmussen S. B., Eriksen K. M., Fehrmann R. The role of support and promoter on the oxidation of sulfur dioxide using platinum based catalysts// Appl. Catal. A: General. 2006. Vol. 306. P. 142 – 148.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Scala F., Solimene R., Montagnaro F. Conversion of solid fuels and sorbents in fluidized bed combustion and gasification // Fluidized Bed Technologies for Near-Zero Emission Combustion and Gasification. 2013. P. 319 – 387.</mixed-citation><mixed-citation xml:lang="en">Scala F., Solimene R., Montagnaro F. Conversion of solid fuels and sorbents in fluidized bed combustion and gasification // Fluidized Bed Technologies for Near-Zero Emission Combustion and Gasification. 2013. P. 319 – 387.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Wiltowski T. S., Sangster K., O’Brien W. S. Catalytic reduction of SO2 with methane over molybdenum catalyst // J. Chem. Tech. Biotech. 1996. Vol. 67. № 2. P. 204 – 212.</mixed-citation><mixed-citation xml:lang="en">Wiltowski T. S., Sangster K., O’Brien W. S. Catalytic reduction of SO2 with methane over molybdenum catalyst // J. Chem. Tech. Biotech. 1996. Vol. 67. № 2. P. 204 – 212.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang X., Hayward D. O., Lee C., Mingos D. M. P. Microwave assisted catalytic reduction of sulfur dioxide with methane over MoS2 catalysts // Appl. Catal. B: Environmental. 2001. Vol. 33. P. 137 – 148. 21. Zhu T., Dreher A., Flytzani-Stephanopoulos M. Direct reduction of SO2 to elemental sulfur by methane over ceria-based catalysts // Appl. Catal. B: Environmental. 1999. Vol. 21. P. 103 – 120.</mixed-citation><mixed-citation xml:lang="en">Zhang X., Hayward D. O., Lee C., Mingos D. M. P. Microwave assisted catalytic reduction of sulfur dioxide with methane over MoS2 catalysts // Appl. Catal. B: Environmental. 2001. Vol. 33. P. 137 – 148. 21. Zhu T., Dreher A., Flytzani-Stephanopoulos M. Direct reduction of SO2 to elemental sulfur by methane over ceria-based catalysts // Appl. Catal. B: Environmental. 1999. Vol. 21. P. 103 – 120.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Zhu T., Kundakovic L., Dreher A., Flytzani-Stephanopoulos M. Redox chemistry over CeO2-based catalysts: SO2 reduction by CO or CH4 // Catal. Today. 1999. Vol. 50. P. 381 – 397.</mixed-citation><mixed-citation xml:lang="en">Zhu T., Kundakovic L., Dreher A., Flytzani-Stephanopoulos M. Redox chemistry over CeO2-based catalysts: SO2 reduction by CO or CH4 // Catal. Today. 1999. Vol. 50. P. 381 – 397.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Xiao Y., Liu Q., Liu Zh., Huang Zh., Guo Y., Yang J. Roles of lattice oxygen in V2O5 and activated coke in SO2 removal over coke-supported V2O5 catalysts // Appl. Catal. B: Environmental. 2008. Vol. 82. P. 114 – 119.</mixed-citation><mixed-citation xml:lang="en">Xiao Y., Liu Q., Liu Zh., Huang Zh., Guo Y., Yang J. Roles of lattice oxygen in V2O5 and activated coke in SO2 removal over coke-supported V2O5 catalysts // Appl. Catal. B: Environmental. 2008. Vol. 82. P. 114 – 119.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
