Water vapor adsorption onto activated carbons prepared from cattle manure compost (CMC)

Autor:	Yuichi Kato, Satoshi Sunohara, Muhammad Abbas Ahmad Zaini, Hideki Tatsumoto, Motoi Machida, Qingrong Qian
Rok vydání:	2008
Předmět:	Capillary condensation Chemistry Inorganic chemistry General Physics and Astronomy Humidity Surfaces and Interfaces General Chemistry Microporous material Condensed Matter Physics Surfaces Coatings and Films Adsorption Desorption medicine Relative humidity Water vapor Activated carbon medicine.drug
Zdroj:	Applied Surface Science. 254:4868-4874
ISSN:	0169-4332
Popis:	Activated carbons were prepared from cattle manure compost (CMC) using zinc chloride activation. The structural and surface chemical characteristics of CMC-based activated carbons were determined by N 2 adsorption–desorption and Boehm titration, respectively. The water vapor adsorption properties of the prepared activated carbons with various pore structure and surface nature were examined, and the mechanism of water adsorbed onto activated carbon was also discussed. The results show that the adsorption of water vapor on carbons begins at specific active sites at low relative humidity (RH), followed by micropore filling at medium RH through the formation of pentamer cluster of water molecules in the narrow micropores. The water vapor adsorption capacity of activated carbon is predominantly dependent on its pore volume and surface area. Although capillary condensation is not the mechanism for water adsorption onto activated carbon, water can adsorb on narrow mesopore to some extent.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7f05964e8edbdb51b7e446ce06d36083 https://doi.org/10.1016/j.apsusc.2008.01.111 Zobrazit plný text záznamu Full Text from ScienceDirect