Novel alumina 'KK Leaf Structures' as catalyst supports


Kolaczkowski, S. T. and Kim, S., 2006. Novel alumina 'KK Leaf Structures' as catalyst supports. Catalysis Today, 117 (4), pp. 554-558.

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A method has been devised in which alumina can be formed into a layer of thin leaf-like structures that have a thickness of 0.2-0.8 micro m. This consists of a process in which aluminum iso-propoxide is transformed into a sol-gel and then: frozen (-195 DegC), freeze-dried (-60 DegC), and finally calcined (450 DegC). These special conditions lead to the formation of a structure that is named: 'KK Leaves'. After calcining at 450 DegC, the leaves have a sp. surface area of 282 m2/g, an av. pore size of 2.8 nm, and exhibit a curly shape. The structure has the appearance of a loosely packed (but ordered) collection of thin curly leaves with fine ribs resembling leaf veins on trees and plants. They would readily act as a support, e.g., for a catalyst, or adsorbents, or act as a membrane filter.


Item Type Articles
CreatorsKolaczkowski, S. T.and Kim, S.
Uncontrolled Keywordsfilters,membranes,surface area,pore size,freeze drying,freezing,adsorbents,catalyst supports,sol-gel processing,alumina kk leaf structure catalyst support,surface structure (alumina kk leaf structures as catalyst supports),calcination
DepartmentsFaculty of Engineering & Design > Chemical Engineering
ID Code876


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