Title
ALO<tex>$_{x}$</tex>-grafted porous clay heterostructures (PCH) with combined micro- and mesoporosity ALO<tex>$_{x}$</tex>-grafted porous clay heterostructures (PCH) with combined micro- and mesoporosity
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
conferenceObject
Publication
Singapore :World Scientific, [*]
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (book)
2nd Pacific Basin Conference on Adsorption Science and Technology, May 14-18, 2000, Brisbane, Australia
ISBN
981-02-4263-8
ISI
000165694900127
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In this contribution, the synthesis and characterization of a new type of Al-gratted porous clay heterostructure (PCH) is discussed. The support PCH consists of small saponite clay plates, bound by a templated silica matrix. This 3-dimensional solid has a unique pore structure, with a high BET surface area (999 m(2)/g), microporosity (0.306 cc/g) and mesoporosity (0,633 cc/g). Based on the 'Molecular Designed Dispersion' method, a grafting of the PCH surface with aluminium oxide species is performed. The reaction involves the interaction between the aluminium acetylacetonate Al(acac), complex and the silanol surface groups of the PCH, followed by a temperature treatment. The acidic properties of the Al-modified PCH are evaluated by the adsorption of acetonitrile-d(3), (CD3CN), revealing a strong Bronsted acidity.
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