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Reference type: Journal
Authors: Morihara K, Doi S, Takiguchi M, Shimada T
Article Title: Footprint catalysis .7. Reinvestigation of the imprinting procedures for molecular footprint catalytic cavities - the effects of imprinting procedure temperature on the catalytic characteristics.
Publication date: 1993
Journal: Bulletin of the Chemical Society of Japan
Volume: 66
Issue: (10)
Page numbers: 2977-2982.
DOI: 10.1246/bcsj.66.2977

Abstract: The authors' imprinting procedures for ''molecular footprint'' catalytic cavities on a silica (alumina) gel surface were reinvestigated. The increases of temperature during the incorporation of aluminum ions into the silicate matrix and during the footprint- imprinting with a template remarkably affected the catalytic characteristics of the resulting cavities. A change from room temperature to 75-80-degrees-C increased the catalytic specificities (k(cat)/K(m)) by a factor of nearly 50. The results also provided experimental proof for the speculated mechanism of footprint formation. That is, the imprinting comprises precedent Lewis acid site generation on a silicate and subsequent Lewis acid-template complexation. The resulting acid-template complexes give rise to the footprint cavities upon removal of the template

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