ZEOLITES FOR SELECTIVE ETHYLAMINE SYNTHESIS
269
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the smallest channels of the zeolites investigated, the avail-
able space for ether formation over weakly acidic centers
will be lower and consequently the rate to DEE will de-
crease. The rate to TEA is greatly influenced by the dif-
fusional constraints imposed on the products. FAU, with
its open, three-dimensional pore system, had the highest
TEA selectivity(23% ), whereasMOR and MAZ, with their
one-dimensional pore system, produced much less TMA
(1–2% ).
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caused by increasing substitution of the alkylammonium
ions and the elimination of accessible Brønsted acid sites
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ACKNOWLEDGMENT
Thiswork wasperformed under the auspicesofNIOK, The Netherlands
Institute for Catalysis Research, Lab. Report UT-98-1-08.
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