Controlling Activity and Selectivity of Bare ZrO2 in Non-oxidative Propane Dehydrogenation
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Applied Catalysis A: General
ISSN: 0926-860X
, E-ISSN: 1873-3875
|
| Вых. Данные |
Год: 2019,
Том: 585,
Номер статьи
: 117189,
Страниц
: 10
DOI:
10.1016/j.apcata.2019.117189
|
| Ключевые слова |
Oxygen vacancies; Propane dehydrogenation; Propene; Reducibility; Zirconia |
| Авторы |
Otroshchenko Tatiana
1
,
Bulavchenko Olga
2
,
Thanh Huyen V.
1
,
Rabeah Jabor
1
,
Bentrup Ursula
1
,
Matvienko Alexander
3
,
Rodemerck Uwe
1
,
Paul Benjamin
4
,
Kraehnert Ralph
4
,
Linke David
1
,
Kondratenko Evgenii V.
1
|
| Организации |
| 1 |
Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT), Albert-Einstein-Straße 29a, Rostock, 18059, Germany
|
| 2 |
Boreskov Institute of Catalysis SB RAS, Lavrentieva Pr. 5, Novosibirsk, 630090, Russian Federation
|
| 3 |
Institute of Solid State Chemistry and Mechanochemistry, Kutateladze 18, Novosibirsk, 630128, Russian Federation
|
| 4 |
Technical University of Berlin, Straße des 17. Juni 124, Berlin, 10623, Germany
|
|
Информация о финансировании (2)
|
1
|
German Research Foundation
|
KO 2261/8-1
|
|
2
|
German Academic Exchange Service
|
|
A detailed study was carried out on the factors affecting the activity and, particularly, selectivity of bare ZrO2 in the non-oxidative propane dehydrogenation (PDH) to propene. To this end, a series of ZrO2 samples differing in their redox and acidic properties, morphology and phase composition were synthesized by precipitation, sol-gel, glycine-nitrate combustion, template, digestion and calcination methods as well as through controlled thermal decomposition of zirconium oxonitrate. The ability of ZrO2 to release its lattice oxygen in reducing atmosphere was identified as the main factor affecting PDH activity and propene selectivity. This is due to the fact that so generated surface zirconium cations (Zrcus) with lower coordination than their regular counterparts show higher activity for propene formation. As the latter sites strongly contribute to coke formation, the selectivity to this undesired product can be hindered through improving the ability of ZrO2 to generate Zrcus sites under reducing conditions. © 2019 Elsevier B.V.