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Phases Formed upon Thermolysis of H3PMo12O40 Heteropolyacid by 31P NMR Научная публикация

Журнал Russian Journal of Inorganic Chemistry
ISSN: 0036-0236 , E-ISSN: 1531-8613
Вых. Данные Год: 1996, Том: 41, Номер: 7, Страницы: 1123-1129 Страниц : 7
Ключевые слова Acid
Авторы Maksimovskaya R.I. 1 , Bondareva V.M. 1 , Litvak G.S. 1
Организации
1 Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk 630090, pr. akademika Lavrent'eva 5, Russian Federation

Реферат: Molybdenyl phosphates (MoO2)(HPO4) (I) and (MoO2)2(P2O7) (II) are prepared and characterized by 31P NMR. H3PMo12O40 heteropolyacid (HPA) decomposes upon thermolysis by two routes: (i) to form MoO3 and I (at ∼ 400°C) and (ii) through the anhydride phase PMo12O38.5 to form MoO3 and II (at ∼ 500°C). The ratio between the reaction routes depends on the heat treatment of the HPA (which controls the extent of the preliminary loss of water of constitution). Phases I and II in the thermolysis products are highly disperse. For this reason, I survives in them up to 650-700°C, whereas when bulk, I transforms to II below 400°C. Mother liquors from the synthesis of I (with P : Mo ≥ 1 and [Mo] ≈ 1 mol/1 obtained by mixing H3PMo12O40 and H3PO4) contained molybdenyl phosphate complexes (95Mo NMR signals with δ = -66 and -103 ppm).
Библиографическая ссылка: Maksimovskaya R.I. , Bondareva V.M. , Litvak G.S.
Phases Formed upon Thermolysis of H3PMo12O40 Heteropolyacid by 31P NMR
Russian Journal of Inorganic Chemistry. 1996. V.41. N7. P.1123-1129. Scopus РИНЦ
Оригинальная: Максимовская Р.И. , Бондарева В.М. , Литвак Г.С.
О составе фаз, образующихся при термолизе гетерополикислоты H3PMo12O40, по данным ЯМР 31Р
Журнал неорганической химии. 1996. Т.41. №7. С.1173-1180. WOS Scopus РИНЦ CAPlusCA
Даты:
Поступила в редакцию: 15 сент. 1995 г.
Опубликована в печати: 1 июл. 1996 г.
Идентификаторы БД:
Scopus: 2-s2.0-2742593628
РИНЦ: 13236283
Цитирование в БД: Пока нет цитирований