Synergetic Effect Between the Metal and Acid Sites of Pd/SAPO-41 Bifunctional Catalysts in n-Hexadecane Hydroisomerization Научная публикация
Журнал |
Journal of Porous Materials
ISSN: 1380-2224 , E-ISSN: 1573-4854 |
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Вых. Данные | Год: 2018, Том: 25, Номер: 1, Страницы: 235-247 Страниц : 13 DOI: 10.1007/s10934-017-0437-7 | ||||||
Ключевые слова | Bifunctional catalyst, DBA template, N-hexadecane, Pd loading, SAPO-41 molecular sieve | ||||||
Авторы |
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Организации |
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Информация о финансировании (3)
1 | National Natural Science Foundation of China | 21676074 |
2 | Heilongjiang University | YJSCX2016-072HLJU |
3 | Ministry of Science and Technology of the People's Republic of China | 2014DFR41110 |
Реферат:
Silicoaluminophosphate molecular sieves (SAPO-41) with different SiO2/Al2O3 ratios were synthesized using di-n-butylamine (DBA) as template. All of the samples were characterized by XRD, SEM, TEM, N2 adsorption, 29Si MAS NMR and IR spectroscopy of adsorbed pyridine. Based on the SAPO-41 molecular sieve, a series of nPd/S41(x) bifunctional catalysts with different SiO2/Al2O3 molar ratios (x = 0.2–0.7) and Pd loadings (n = 0.1–1.0 wt%) were prepared. Their catalytic performance was investigated in n-hexadecane hydroisomerization using a fixed-bed flow reactor system. The influence of the acidity and ratio between the accessible Pd sites and Brønsted acid sites (CPd/CH+)(CPd/CPdCH+CH+) on the catalytic performance of the prepared samples was studied by adjusting the composition of the initial gel in the synthesis of SAPO-41 molecular sieves and the Pd loadings during preparation process. The results indicated that the 0.8Pd/S41(0.6) catalyst exhibited excellent catalytic performance due to a suitable acidity, high Pd dispersion and appropriate CPd/CH+CPd/CPdCH+CH+ ratio (0.58), which was beneficial for the synergetic effect between the (de)hydrogenating and acid functions of the bifunctional catalyst. The highest iso-hexadecane yield of 89% was obtained at an n-hexadecane conversion of 94% over the 0.8Pd/S41(0.6) catalyst.
Библиографическая ссылка:
Wei X.
, Kikhtyanin O.V.
, Parmon V.N.
, Wu W.
, Bai X.
, Zhang J.
, Xiao L.
, Su X.
, Zhang Y.
Synergetic Effect Between the Metal and Acid Sites of Pd/SAPO-41 Bifunctional Catalysts in n-Hexadecane Hydroisomerization
Journal of Porous Materials. 2018. V.25. N1. P.235-247. DOI: 10.1007/s10934-017-0437-7 WOS Scopus РИНЦ
Synergetic Effect Between the Metal and Acid Sites of Pd/SAPO-41 Bifunctional Catalysts in n-Hexadecane Hydroisomerization
Journal of Porous Materials. 2018. V.25. N1. P.235-247. DOI: 10.1007/s10934-017-0437-7 WOS Scopus РИНЦ
Даты:
Опубликована online: | 2 мая 2017 г. |
Опубликована в печати: | 1 февр. 2018 г. |
Идентификаторы БД:
Web of science | WOS:000419943300024 |
Scopus | 2-s2.0-85018374480 |
РИНЦ | 41770510 |
Chemical Abstracts | 2017:702574 |
OpenAlex | W2611471618 |