Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.1039/c6ra09462g
Ключевые слова: Emulsification, Inverse problems, Molecular sieves, Pore size, Size distribution, Sol-gels, Sunflower oil, Surface active agents, Xerogels, Carbon microspheres, Carbon molecular sieve, Carbon xerogels, Independent variables, Macro-porosity, Median diameters, Narrow pore size distributions, Stirring speed, Microspheres
Аннотация: The first tannin-based carbon xerogel microspheres were prepared and characterised. The materials were synthesised by inverse emulsion polymerisation in sunflower oil, based on the same formulation but using two main independent variables: stirring speed and surfactant amount. The resultant sol-gel spheres were then washed, dried iПоказать полностьюn air, and pyrolysed. The effect of stirring speed and surfactant amount on carbon microsphere size distribution and porous texture was investigated in detail. Depending on the cases, ultramicroporous carbon microspheres with extremely narrow pore size distributions centred at 0.4-0.5 nm, zero mesoporosity, negligible macroporosity and median diameters close to 40 mu m, could be obtained. These characteristics are typical of expensive commercial carbon molecular sieves, whereas the present materials were prepared with cheap and renewable precursors using a very simple method.
Журнал: RSC ADVANCES
Выпуск журнала: Vol. 6, Is. 70
Номера страниц: 65698-65708
ISSN журнала: 20462069
Место издания: CAMBRIDGE
Издатель: ROYAL SOC CHEMISTRY