Комплексы хлоридов алюминия, железа(III) и галлия(III) с простыми эфирами в синтезе реакционно-способного полиизобутилена

  • Сергей Викторович Костюк Белорусский государственный университет, пр. Независимости, 4, 220030, г. Минск, Беларусь; Научно-исследовательский институт физико-химических проблем БГУ, ул. Ленинградская, 14, 220006, г. Минск, Беларусь https://orcid.org/0000-0002-7466-3662

Аннотация

В обзоре представлены последние достижения в области катионной полимеризации изобутилена, катализируемой комплексами традиционных кислот Льюиса с простыми эфирами. Приведены экспериментальные и теоретические доказательства влияния пространственной структуры и основности эфира, используемого для приготовления комплекса, на его активность, а также региоселективность реакции отщепления протона в β-положении по отношению к макрокатиону. Наибольшую активность и региоселективность в полимеризации изобутилена показали комплексы галогенидов металлов с линейным (Bu2O) и слаборазветвленным (iPr2O) эфирами умеренной основности (pKa от –4,3 до –5,4), в результате которой образуется реакционно-способный полиизобутилен (HR PIB) – основной интермедиат при производстве добавок в моторные масла и топливо. Особое внимание уделено адаптации каталитических систем к промышленным условиям (использование неполярных растворителей, высоких температур синтеза, высоких концентраций мономера).

Биография автора

Сергей Викторович Костюк, Белорусский государственный университет, пр. Независимости, 4, 220030, г. Минск, Беларусь; Научно-исследовательский институт физико-химических проблем БГУ, ул. Ленинградская, 14, 220006, г. Минск, Беларусь

доктор химических наук, доцент; заведующий кафедрой высокомолекулярных соединений химического факультета БГУ, заведующий лабораторией катализа полимеризационных процессов Научно-исследовательского института физико-химических проблем БГУ

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Опубликован
2020-08-23
Ключевые слова: катионная полимеризация, изобутилен, кислоты Льюиса, простые эфиры, реакционно-способный полиизобутилен
Поддерживающие организации Автор выражает благодарность И. В. Василенко, А. Н. Фролову, Д. И. Шиману за проведение экспериментальных исследований, П. А. Никишеву за выполнение теоретических расчетов и фирме BASF SE (Германия) за финансовую поддержку.
Как цитировать
Костюк, С. В. (2020). Комплексы хлоридов алюминия, железа(III) и галлия(III) с простыми эфирами в синтезе реакционно-способного полиизобутилена. Журнал Белорусского государственного университета. Химия, 2, 50-62. https://doi.org/10.33581/2520-257X-2020-2-50-62