Abstract
Iron(III) oxide-pillared clays were prepared by a reaction of Na +-montmorillonite with base-hydrolyzed solutions of Fe 3+ salts and a subsequent thermal conversion of the intercalated polycations. Those pillared clays have low micropore volumes (0.04 cm 3/g) and surface areas (95 m 2/g). The low porosity is due to a high density of Fe pillars between the clay sheets. This disadvantage can be overcome by a preadsorption of amines between the clay sheets prior to pillaring with the iron precursor. As a result, the pillar density decreases because a part of the interlayer space is occupied by the amine. During calcination, the pillaring precursor is converted into rigid iron oxide pillars. and the organic compound is removed. This results in a micropore volume and surface area 2.5 times higher reflecting an important increase of the adsorption capacity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
