Effect of Promoter M (M = Au, Ag, Cu, Ce, Fe, Ni, Co, Zn) on the Activity of Pd-M/Al2O3 Catalysts of Ethanol Conversion into alpha-Alcohols Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2020, Том: 61, Номер: 6, Страницы: 894-902 Страниц : 9 DOI: 10.1134/S0023158420060117 | ||||
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Реферат:
Pd/Al2O3 and Pd-M/Al2O3 catalysts (M = Au, Ag, Cu, Ce, Fe, Ni, Co, Zn) were obtained by ion exchange and impregnation. Pd/Al2O3 had high initial activity in the conversion of ethanol into alpha-alcohols, but lost 90% of its activity after 10 h of operation because of deactivation caused by the chemisorption of the by-product (CO) on Pd atoms. Modification of Pd with gold or silver led to an increase in the rate of Pd deactivation. As a result, the Pd-Au and Pd-Ag systems were less active and stable. In contrast, the Pd-Fe, Pd-Co, Pd-Ni, Pd-Cu, Pd-Zn, and Pd-Ce systems exhibited higher resistance to CO poisoning than Pd and demonstrated high activity and stability. The observed tendencies in the catalytic action of the mono- and bimetallic systems were explained within the framework of the d band model proposed by Hammer and Norskov. Pd-Cu/Al2O3 was most effective in the target process; it is not poisoned by CO and allows ethanol conversion into alpha-alcohols at 95% selectivity, while the time of its stable operation is at least 100 h. The structure of the Pd-Cu catalytic system was studied by TEM, EDA, XPS, TPR-H-2, and TPD-NH3. A model of active catalyst sites was proposed.
Библиографическая ссылка:
Nikolaev S.A.
, Tsodikov M.V.
, Chistyakov A.V.
, Chistyakova P.A.
, Ezzhelenko D.I.
, Krotova I.N.
Effect of Promoter M (M = Au, Ag, Cu, Ce, Fe, Ni, Co, Zn) on the Activity of Pd-M/Al2O3 Catalysts of Ethanol Conversion into alpha-Alcohols
Kinetics and Catalysis. 2020. V.61. N6. P.894-902. DOI: 10.1134/S0023158420060117 WOS Scopus РИНЦ CAPlus OpenAlex
Effect of Promoter M (M = Au, Ag, Cu, Ce, Fe, Ni, Co, Zn) on the Activity of Pd-M/Al2O3 Catalysts of Ethanol Conversion into alpha-Alcohols
Kinetics and Catalysis. 2020. V.61. N6. P.894-902. DOI: 10.1134/S0023158420060117 WOS Scopus РИНЦ CAPlus OpenAlex
Оригинальная версия:
Николаев С.А.
, Цодиков М.В.
, Чистяков А.В.
, Чистякова П.А.
, Эзжеленко Д.И.
, Кротова И.Н.
Влияние промотора M (M = Au, Ag, Cu, Ce, Fe, Ni, Co, Zn) на активность Pd–M/Al2O3-катализаторов конверсии этанола в α-спирты
Кинетика и катализ. 2020. Т.61. №6. С.864-872. DOI: 10.31857/S045388112006012X РИНЦ OpenAlex
Влияние промотора M (M = Au, Ag, Cu, Ce, Fe, Ni, Co, Zn) на активность Pd–M/Al2O3-катализаторов конверсии этанола в α-спирты
Кинетика и катализ. 2020. Т.61. №6. С.864-872. DOI: 10.31857/S045388112006012X РИНЦ OpenAlex
Даты:
| Поступила в редакцию: | 17 февр. 2020 г. |
| Принята к публикации: | 4 мая 2020 г. |
| Опубликована в печати: | 1 нояб. 2020 г. |
Идентификаторы БД:
| Web of science: | WOS:000603310400009 |
| Scopus: | 2-s2.0-85098274683 |
| РИНЦ: | 45053304 |
| Chemical Abstracts: | 2021:19451 |
| OpenAlex: | W3116341483 |