An HY-HZSM-5 Zeolite System Modified with Nickel Научная публикация
Журнал |
Polish Journal of Chemistry
ISSN: 0137-5083 |
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Вых. Данные | Год: 1996, Том: 70, Номер: 12, Страницы: 1594-1604 Страниц : 11 | ||||||
Ключевые слова | Catalysis, Stability, Zeolites | ||||||
Авторы |
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Организации |
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Реферат:
Zeolite systems NH(4)NaY(x)ZSM-5(100-x) (1) and (HNaY(x)ZSM-5(100-x))(3) (II) exchanged or impregnated with Ni(NO3)(2) solution were investigated with IR, XRD and MAS NMR spectroscopies. Zeolite mixtures I, exchanged with Ni2+, showed only slightly better hydrothermal stability (lower degree of dehydroxylation). Zeolite mixtures II stabilized and exchanged with Ni2+ were stable to water vapour under test conditions. Samples I and II impregnated with Ni(NO3)(2) solution underwent far-reaching dehydroxylation by the first heating, but the same samples treated with ammonia water preserved the OH groups, because in the case NO3- anion did not act as a dehydroxylating agent. The final pH by impregnation is an important factor in obtaining catalysts with Ni having a high concentration of Bronsted acid sites.
Библиографическая ссылка:
Romotowski T.
, Komorek J.
, Grzechowiak J.R.
, Mastikhin V.M.
, Terskikh V.V.
An HY-HZSM-5 Zeolite System Modified with Nickel
Polish Journal of Chemistry. 1996. V.70. N12. P.1594-1604. WOS Scopus РИНЦ
An HY-HZSM-5 Zeolite System Modified with Nickel
Polish Journal of Chemistry. 1996. V.70. N12. P.1594-1604. WOS Scopus РИНЦ
Даты:
Опубликована в печати: | 1 дек. 1996 г. |
Идентификаторы БД:
Web of science | WOS:A1996VY59500015 |
Scopus | 2-s2.0-0030519786 |
РИНЦ | 13223138 |
Chemical Abstracts | 1997:40400 |
Chemical Abstracts (print) | 126:151948 |