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Structure and Catalytic Performance of Zeolites
Abstract This chapter is concerned with the chemistry and physics of channels, cages, and cavities, the diameters of which are large enough to permit ingress of small organic molecules, but sufficiently small to prevent the entry of larger ones. Aperture diameters of ~ 3–8 Å are, therefore, central to our discussion. Cages and cavities of this dimension are common in many branches of chemistry and indeed in numerous biological contexts. The notion that a lock-and-key principle dominates many catalytic phenomena or holds sway in the formation of certain guest: host complexes, has been around since the days of Emil Fischer in the early years of this century. It is also well known that the mode of action of certain enzymes is crucially governed by the shape- selectivity of the recess at which the active sites are centered. In lysozyme, for example, reactant molecules are neatly accommodated and are subsequently cut at the cleft, the active site in the enzyme surface.
Structure and Catalytic Performance of Zeolites
Abstract This chapter is concerned with the chemistry and physics of channels, cages, and cavities, the diameters of which are large enough to permit ingress of small organic molecules, but sufficiently small to prevent the entry of larger ones. Aperture diameters of ~ 3–8 Å are, therefore, central to our discussion. Cages and cavities of this dimension are common in many branches of chemistry and indeed in numerous biological contexts. The notion that a lock-and-key principle dominates many catalytic phenomena or holds sway in the formation of certain guest: host complexes, has been around since the days of Emil Fischer in the early years of this century. It is also well known that the mode of action of certain enzymes is crucially governed by the shape- selectivity of the recess at which the active sites are centered. In lysozyme, for example, reactant molecules are neatly accommodated and are subsequently cut at the cleft, the active site in the enzyme surface.
Structure and Catalytic Performance of Zeolites
Thomas, J. M. (author)
1986-01-01
26 pages
Article/Chapter (Book)
Electronic Resource
English
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