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Information × Registration Number 0215U009435, 0115U005234 , R & D reports Title Working out fundumental base for process of nanoporous carbon materials obtaining from broun coal for supercapacitors production popup.stage_title Head Popov Anatoly Fedorovich, Доктор хімічних наук Registration Date 29-12-2015 Organization LM.Litvinenko Institute of Physical Organic and Coal Chemistry popup.description2 Object of research - alkali conversion of brown coal into nanoporous carbon adsorbent being suitable for usage in supercapacitors. Goal is to ascertain relationships of nanoporosity formation during transformation of brown coal (BC) into active carbon under alkali activation. Research methods: thermolysis of BC and its mixtures with alkalis, IR-spectroscopy, determination of porosity characteristics by low temperature (77 К) adsorption of nitrogen. A thermolysis of BC and its mixtures with hydroxides МОН (М=Li, Na, K) for thermo programmed heating (4 oC/min) and heat shock. Two areas of maximum rates of coal thermodestruction reactions are identified. The first one coincides with area of main thermal destruction (300-500°С) of BC itself and is independent on alkali metal. The second one (600-800°С)is responsible for porosity development and is sensitive to alkali nature. The maximum thermodestruction rate and porosity development increase in the series LiОН < NaОН< KОН and shift to low temperature region (from 850 to 750°C). Relationships of porosity characteristics from activation conditions are determined under varying alkali nature, activation temperature (400-800°С), and alkali/coal ratio (?1,0 g/g). It allows to optimize preparation of brown coal nanoporous materials. Results obtained are aimed on optimizing preparation of nanoporous carbon adsorbents for usage as supercapacitor electrode materials. Product Description popup.authors Бован Любов Анатоліївна Кучеренко Володимир Олександрович Тамаркіна Юлія Володимирівна Шендрік Тетяна Георгіївна popup.nrat_date 2020-04-02 Close