Low-temperature zeolite synthesis

We should remember that low temperature zeolite synthesis started with Milton s gel synthesis of A and X in the early 1950 s(l). Large pore zeolites were substantially unavailable at that time. Natural faujasite was rare as it still is. Large port mordenite was still ten years in the future as were zeolites L and Omega. Zeolites were regarded as ion exchangers or as selective sorbents, not as catalysts. 

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