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The performance of thick aluminophosphate molecular sieve layers for heat exchanger applications is evaluated. The aluminophosphate AlPO-18 (AEI structure type code) molecular sieve sorbent is coated on aluminium supports prior the sorption measurements. Two AlPO-18 samples with different morphological appearance, i.e. nano-sized crystals with monomodal size distribution and micron-sized crystals...
Titanium silicate ETS-4 was synthesized in Na, Na-K, Na-Li, and Na-Ca containing gels. The partial replacement of sodium with potassium leads to a change in the kinetics behavior of the crystallization curves, which becomes a function of the content of potassium in the gel. The presence of calcium or lithium in the initial gel increases substantially the nucleation time and the time to attain a...
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