Zeolites electrocatalysis

To conclude this review, I highlight three topics within heterogeneous catalysis for which DFT-based calculations appear poised to allow rapid progress in the near future, the development of catalysts for use in reversible hydrogen storage, electrocatalysis for fuel cell applications, and catalysis in zeolites. 

Microheterogeneous electrocatalysis can be performed with zeolite-based catalysts using suspensions of such materials in organic solvents with low ionic strength by applying a DC voltage to suspensions of zeolite particles, as described by Rolison and Stemple (1993) for the Pd"-Cu"-NaY catalyzed oxidation of propene, but a wide variety of systems has been studied. 

Domenech, A., Domenech, M.T., Garcia, H., and GaUetero, M.S. 1999a. Electrocatalysis of neu-reotransmitter catecholamines by 2,4,6-triphenylpyrylium ion immobilized inside zeolite Y supercages. Journal of the Chemical Society Chemical Communications 2173-2174. 

Rolison, D.R., and Bessel, C.A. 2000. Electrocatalysis and charge-transfer reactions at redox-modified zeolites. Accounts of Chemical Research 33, 737-744. 

The unique three-dimensional aluminosilicate crystalline lattice of zeolites gives rise to three intriguing characteristics (104). These characteristics are high cation-exchange capacity, sensitive molecular recognition (size and shape selectivity), and good catalytic activity. These properties give rise to the use of zeolite modified electrodes in sensor development, and electrocatalysis (106). These and other applications are outlined in Table 8.6. More detailed descriptions can be found in recent reviews (7, 96, 102-106), with extensive lists compiled by Rolison (Table 11 in (102)) and Walcarius (Tables 1 and 3 in (105) and Table 1 in (106)). 

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