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Synthesis of Porous Chromia-Pillared Tetratitanate

✍ Scribed by Wenhua Hou; Yashao Chen; Canxiong Guo; Qijie Yan

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
194 KB
Volume
136
Category
Article
ISSN
0022-4596

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✦ Synopsis

The first chromia-pillared tetratitanate is prepared by the reaction of the layered tetramethylammonium-intercalated tetratitanate with an aqueous chromium(III) acetate followed by calcination at 400°C. The new porous material has a specific surface area as high as 94 m 2 g ؊1 and an interlayer distance of 1.06 nm along with a moderately strong acidity. The layered nature of the pillared material may be retained above 600°C.

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The microporosity of chromia-and titania-pillared clays differing in pillar density has been explored. Nitrogen adsorption data determined at very low relative pressures were used. These data were analyzed by means of the a s method and the BET, Langmuir, Dubinin-Radushkevich and Dubinin-Stoeckli ap