Probing the H2‑Induced Restructuring of Pt Nanoclusters by H2‑TPD Научная публикация
| Журнал |
Langmuir
ISSN: 0743-7463 , E-ISSN: 1520-5827 |
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| Вых. Данные | Год: 2016, Том: 32, Номер: 46, Страницы: 12013-12021 Страниц : 9 DOI: 10.1021/acs.langmuir.6b02847 | ||
| Ключевые слова | Nanoclusters; Platinum; Quantum theory; Spectroscopic analysis | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Федеральное агентство научных организаций России | V.45.3.5. |
Реферат:
Metal clusters with sizes below 1 nm attract great scientific interest, but the main information on their properties still comes from quantum mechanics modeling and costly physical methods of limited availability. We have studied ultradispersed Pt/γ-Al2O3 samples with temperature-programmed desorption (TPD) and complementary adsorption/desorption techniques and observed that the H2-TPD profile of Pt/γ-Al2O3 is strongly dependent on the pretreatment conditions (0 < PH2 ≤ 1 bar; 200 K ≤ T ≤ 470 K). The results corroborate recent theoretical and spectroscopic studies predicting alterations in the structure of Pt nanoclusters under H2-treatment conditions but reveal that the restructuring needs to overcome continuous activation barriers and leads both to an increase in surface coverage and strengthening of the Pt-H bonds. This was interpreted as being a consequence of the strong interaction of Pt clusters with the support. The results extend insights into the behavior of supported metal particles and expand the potential of existing experimental techniques
Библиографическая ссылка:
Yakovina O.A.
, Lisitsyn A.S.
Probing the H2‑Induced Restructuring of Pt Nanoclusters by H2‑TPD
Langmuir. 2016. V.32. N46. P.12013-12021. DOI: 10.1021/acs.langmuir.6b02847 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Probing the H2‑Induced Restructuring of Pt Nanoclusters by H2‑TPD
Langmuir. 2016. V.32. N46. P.12013-12021. DOI: 10.1021/acs.langmuir.6b02847 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Даты:
| Поступила в редакцию: | 31 июл. 2016 г. |
| Принята к публикации: | 6 окт. 2016 г. |
| Опубликована online: | 8 нояб. 2016 г. |
| Опубликована в печати: | 22 нояб. 2016 г. |
Идентификаторы БД:
| Web of science: | WOS:000388914400003 |
| Scopus: | 2-s2.0-84997830839 |
| РИНЦ: | 27586774 |
| Chemical Abstracts: | 2016:1743457 |
| Chemical Abstracts (print): | 165:565512 |
| PMID (PubMed): | 27779882 |
| OpenAlex: | W2537128857 |