Carbon Dispersion and Morphology in Carbon-Coated Nanocrystalline MgO | Sciact - CRIS-система Института катализа

Carbon Dispersion and Morphology in Carbon-Coated Nanocrystalline MgO Научная публикация

Журнал

Langmuir
ISSN: 0743-7463 , E-ISSN: 1520-5827

Вых. Данные

Год: 2003, Том: 19, Номер: 24, Страницы: 10426-10433 Страниц : 8 DOI: 10.1021/la0206965

Ключевые слова

Adsorbents; Aerogels; Carbon; Chemical vapor deposition; Coatings; High resolution electron microscopy; Magnesia; Monolayers; Morphology; Propylene; Pyrolysis; Textures

Авторы

Mel'gunov Maxim S. ¹ , Mel'gunova Elena A. ¹ , Zaikovskii Vladimir I. ¹ , Fenelonov Vladimir B. ¹ , Bedilo Alexander F. ² , Klabunde Kenneth J. ²

Организации

1	Boreskov Institute of Catalysis, Prospekt Akad. Lavrentieva 5, 630090 Novosibirsk, Russian Federation
2	Department of Chemistry, Kansas State University, 111 Willard Hall, Manhattan, Kansas 66506

Информация о финансировании (1)

Civilian Research and Development Foundation

RC1-2340-NO-02

Nanoscale carbon/MgO composite adsorbents have been prepared by chemical vapor deposition (CVD) of carbon over aerogel-prepared nanocrystalline MgO with propylene as the carbon precursor, and by pyrolysis of Mg(OH)2 aerogels modified with resorcinol. A new textural approach including adsorption methods and HREM has been applied for comprehensive characterization of their textural properties. Carbon has been found to form twisted isolated graphite-like fragments designated as nanoislands (1−2 graphite-like monolayers) coating the MgO surface in the case of carbon CVD and a thicker (2−3 graphite-like monolayers) coating in the case of pyrolysis of resorcinol-modified Mg(OH)2 aerogels. The average number of carbon nanoislands grows with an increase of carbon loading whereas their mean size remains approximately the same. The nanoislands have very high specific surface areas close to the maximum surface area possible for carbon. The discovered peculiarities of carbon deposition allow one to achieve controlled carbon/mineral (hydrophobic/hydrophilic) composition of the surface in the surface coverage range of 20−70%.

Mel'gunov M.S. , Mel'gunova E.A. , Zaikovskii V.I. , Fenelonov V.B. , Bedilo A.F. , Klabunde K.J.
Carbon Dispersion and Morphology in Carbon-Coated Nanocrystalline MgO
Langmuir. 2003. V.19. N24. P.10426-10433. DOI: 10.1021/la0206965 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	5 авг. 2002 г.
Опубликована в печати:	1 нояб. 2003 г.

Web of science:	WOS:000186694500066
Scopus:	2-s2.0-0345376152
РИНЦ:	13426012
Chemical Abstracts:	2003:876837
Chemical Abstracts (print):	140:65672
OpenAlex:	W1987727078

БД	Цитирований
Web of science	12
Scopus	14
РИНЦ	17
OpenAlex	17