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Microporous ZSM-5 zeolite was post-treated by desilication with sodium hydroxide, dealumination with oxalic acid, or both of them in a sequential way to finely tune the zeolite catalysts with hierarchically porous structure and varying acidity. In the catalytic dehydration of ethanol, diethyl ether and ethylene were two main products competitively formed at 200°C and atmospheric pressure. The post-treated...
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