The active site of acidic aluminosilicate catalysts


The availability of solid acidic catalysts based on zeolite ZSM-5 make possible observations on the nature and the absolute rate behaviour of the individual protonic sites. Tetrahedral aluminium atoms are the highly reactive ingredients, even at levels of parts per million, or less. Turnover numbers for several hydrocarbon reactions equal and exceed familiar enzymatic turnover values. Intensive catalytic activities can result from aluminium levels likely to be ignored by the experimenter.

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Haag, W., Lago, R. & Weisz, P. The active site of acidic aluminosilicate catalysts. Nature 309, 589–591 (1984).

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