: The inýuence of Korver's de-ashing procedure on the changes in the thermal stability and porosity of three commercial granular activated carbons : D43/1 (Carbo-Tech, Essen, Germany), AHD, and WD-extra (Hajno wka, Poland) was investigated. For original carbons, carbons treated only with concentrated HCl, and completely de-ashed carbons (treated with concentrated HCl and HF) the thermogravimetric results in air and helium, apparent and true densities, low-temperature nitrogen adsorption, and mercury porosimetry are reported and compared. The changes in thermal stability and porosity are discussed together with the mechanism of carbon de-ashing.1999 Society of Chemical Industry (
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.