Ni/γ-Al2O3 Sorbents for Oxygen Removal from Associated Petroleum Gas Streams: Selection of Thermal Treatment Technique for the Synthesis Научная публикация
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Gas Science and Engineering
ISSN: 2949-9089 |
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| Вых. Данные | Год: 2026, Том: 146, Номер статьи : 205835, Страниц : 14 DOI: 10.1016/j.jgsce.2025.205835 | ||
| Ключевые слова | Natural Gas; Adsorption; Solid Sorbents; Nickel; Alumina; Nanoparticles; Oxygen. | ||
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| Организации |
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Реферат:
Oxygen removal is an important step during hydrocarbon gas extraction and transportation. A promising oxygen sorbent in the form of Ni/γ-Al2O3 has previously been proposed due to its high availability, low cost, high oxygen removal rate and room temperature adsorption capabilities. However, to create an effective reusable sorbent, the proposed material must have a substantial capacity and be easily reducible. The main goal of this work is to assess an effect of such basic synthesis parameters as nickel loading (5–15 wt %) and thermal treatment (air calcination or direct hydrogen reduction) on the characteristics of Ni/γ-Al2O3 oxygen sorbents. For this, a series of sorbents was prepared by incipient wetness impregnation and characterized by XRD, TEM, low-temperature nitrogen adsorption, temperature programmed reduction in hydrogen (TPR-H2), H2 and O2 pulse chemisorption as well as tested in the oxygen removal from the mixture with methane under breakthrough conditions. The resulting materials showed an oxygen uptake capacity up to 7 mlO2·gsorb−1 and a low dispersion (4–10 %). It was noted that direct hydrogen reduction led to the formation of smaller and more easily reduced surface particles of NiO, as compared to pre-calcination, which resulted in the formation of more inert Ni-containing spinel particles. During multiple oxygen sorption tests, it was also observed that pre-calcined sample noticeably increased their oxygen uptake capacity after the first oxidation-reduction cycle, which may be related to the nickel redispersion.
Библиографическая ссылка:
Borodaevskiy M.M.
, Dubinin Y.V.
, Yeletsky P.M.
, Yakovlev V.A.
Ni/γ-Al2O3 Sorbents for Oxygen Removal from Associated Petroleum Gas Streams: Selection of Thermal Treatment Technique for the Synthesis
Gas Science and Engineering. 2026. V.146. 205835 :1-14. DOI: 10.1016/j.jgsce.2025.205835 Scopus CAPlus OpenAlex
Ni/γ-Al2O3 Sorbents for Oxygen Removal from Associated Petroleum Gas Streams: Selection of Thermal Treatment Technique for the Synthesis
Gas Science and Engineering. 2026. V.146. 205835 :1-14. DOI: 10.1016/j.jgsce.2025.205835 Scopus CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 18 июл. 2025 г. |
| Принята к публикации: | 24 дек. 2025 г. |
| Опубликована online: | 29 дек. 2025 г. |
| Опубликована в печати: | 1 февр. 2026 г. |
Идентификаторы БД:
| Scopus: | 2-s2.0-105026337937 |
| Chemical Abstracts: | 2026:24820 |
| OpenAlex: | W7117499637 |
Цитирование в БД:
| БД | Цитирований |
|---|---|
| OpenAlex | Нет цитирований |
| Scopus | Нет цитирований |