kaz44Вестник Университета Шакарима. Серия технические наукиBulletin of Shakarim University. Technical Sciences2788-79953006-0524«Шәкәрім университеті» КеАҚ10.53360/2788-7995-2024-2(14)-61kaz44-875Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)ПРЕВРАЩЕНИЕ С4-ФРАКЦИИ СЖИЖЕННОГО НЕФТЯНОГО ГАЗА НА ЦЕОЛИТСОДЕРЖАЩЕМ КАТАЛИЗАТОРЕ, МОДИФИЦИРОВАННОМ ХРОМОМ И ФОСФОРОМCONVERSION OF C4-FRACTION OF LIQUEFIED PETROLEUM GAS ON ZEOLITECONTAINING CATALYST MODIFIED WITH CHROMIUM AND PHOSPHORUShttps://orcid.org/0000-0002-6198-3018ОрынбасарР. О.OrynbassarR. O.

Райгуль Орынбасаровна Орынбасар⃰ – кандидат химических наук, доцент кафедры химии и химической технологии 

030000, Республика Казахстан, г. Актобе, пр. Молдагулова, 34 

Rаigul Orynbassarovna Orynbassar – Candidate of Chemical Sciences, Associate Professor of the Department of Chemistry and Chemical Technology

030000, Republic of Kazakhstan, Акtobе, 34 Moldagulova Avenue 

raihan_06_79@mail.ruhttps://orcid.org/0000-0002-9236-5909ТастановаЛ. К.TastanovaL. K.

Лаззат Кнашевна Тастанова – кандидат химических наук, доцент кафедры химии и химической технологии 

 030000, Республика Казахстан, г.Актобе, пр.Молдагулова, 34 

Lyazzat Knashevna Tastanova – Candidate of Chemical Sciences, Associate Professor of the Department Chemistry and Chemical Technology 

030000, Republic of Kazakhstan, Акtobе, 34 Moldagulova Avenue 

Lyazzatt@mail.ruhttps://orcid.org/0000-0002-9829-3117КанапиеваФ. М.KanapievaF. M.

Фатима Мухидиновна Канапиева – кандидат химических наук, доцент кафедры физической химии, катализа и нефтехимии 

050040, Республика Казахстан, г. Алматы, пр. аль-Фараби, 71 

Fatima Mukhidinovna Kanapieva – Candidate of Chemical Sciences, Associate Professor of the Department of Physical Chemistry, Catalysis and Petrochemistry

050040, Republic of Kazakhstan, Almaty, 71 Al-Farabi Avenue 

fatima31@mail.ruАктюбинский региональный университет имени К.ЖубановаКазахстанK. Zhubanov Aktobe Regional UniversityKazakhstanКазахский национальный университет имени аль-ФарабиКазахстанAl-Farabi Kazakh National UniversityKazakhstan20242906202412(14)511519Copyright © Орынбасар Р.О., Тастанова Л.К., Канапиева Ф.М., 20242024Орынбасар Р.О., Тастанова Л.К., Канапиева Ф.М.Orynbassar R.O., Tastanova L.K., Kanapieva F.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://tech.vestnik.shakarim.kz/jour/article/view/875

Разработан цеолитсодержащий катализатор, модифицированный добавками хрома и фосфора. Определены технологические условия его оптимальной активности в реакции дегидрирования и олигомеризации С4-фракции сжиженного нефтяного газа с получением компонентов бензина.Проведено исследование физико-химических свойств 5% Сr/Al2O3+ HZSM катализатора, промотированного 5%-й фосфорной кислотой. Электронно-микроскопически в сочетании с микродифракцией исследована структура катализатора. Методом РФА были обнаружены рефлексы HZSM и Al2O3. Также методом ЭПР было показано, что катализатор ПФК-9 характеризуется узким синглетным симметричным ЭПР-сигналом с g-фактором 1,96 и шириной ∆Н=60 Гаусс на фоне широкого сигнала с ∆Н=1000 Гаусс. Узкий ЭПР-сигнал обусловлен ионами Сr5+ в матрице и цеолите HZSM. Интенсивность сигнала Сr5+ в катализаторе ПФК-9 составляет 205 усл.ед. Удельная поверхность катализатора равна 176,5 м2/г, объем пор – 0,137 мл/г.Катализатор при контакте с С4-алканами (400-600°С, Р=0,1 МПа) проводит дегидрирование с получением олефинов с последующей их олигомеризацией. Исследование превращения С4-фракции СНГ на катализаторе ПФК-9 было также проведено в присутствии паров воды. Выход С5-С10- углеводородов в зависимости от технологических условий колеблется в пределах 40-50% при степени превращения сырья 80-90%.

A zeolite-containing catalyst modified with chromium and phosphorus additives has been developed. The technological conditions of its optimal activity in the dehydrogenation reaction and oligomerization of the C4 fraction of liquefied petroleum gas to produce gasoline components are determined.A study of the physicochemical properties of a 5% Cr/Al2O3+ HZSM catalyst promoted with 5% phosphoric acid was carried out. The structure of the catalyst was studied by electron microscopy in combination with microdiffraction. The reflections of HZSM and Al2O3 were detected using the X-ray diffraction method. It was also shown by the EPR method that the PFK-9 catalyst is characterized by a narrow singlet symmetrical EPR signal with a g-factor of 1.96 and a width ∆Н=60 Gauss against the background of a broad signal with ∆Н=1000 Gauss. The narrow EPR signal is due to Cr5+ ions in the matrix and HZSM zeolite. The intensity of the Cr5+ signal in the PFK-9 catalyst is 205 conventional units. The specific surface area of the catalyst is 176,5 m2/g, the pore volume is 0,137 ml/g.The catalyst at contact with C4-alkanes (400-600°C, P=0,1 MPa) makes dehydrogenation with reception olefins with the subsequent them oligomerisetion. A study of the conversion of the C4 fraction of LPG on the PFK-9 catalyst was also carried out in the presence of water vapor.The yield of C5-C10-hydrocarbons depending on technological conditions fluctuates within 40-50%, at the degree of conversion raw material 80-90%.

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The authors declare that there are no conflicts of interest present.