One‐Step Synthesis of Pseudo‐Boehmite by Carbonation in a Microchannel Reactor

Pseudo‐boehmite with a high specific surface area and large pore volume was continuously synthesized in a microchannel reactor using the carbonation method. The effects of the microchannel on the prepared pseudo‐boehmite, strongly present in gas‐liquid mixing efficiency, were studied. In time scale, the crystallinity of pseudo‐boehmite in the microchannel, without the aging process of high‐temperature stirring, reaches the standard of industrial products. Besides, the fluid and mass transfer effect of the gas‐liquid mixing process in the microreactor was simulated under experimental conditions in computational fluid dynamics. The result illustrated the base‐liquid surround by the acid‐gas model in the microreactor, which is significantly different from the batch reactor.