Abstract
The construction of monolithic adsorbents can promote the potential industrial application for adsorption desulfurization of fuel. Herein, the 3D-CeO2/ATP monolithic adsorbents were successfully constructed through a 3D printing strategy, possessing superior adsorption desulfurization performance of more than 85 % sulfur removal under optimized adsorption reaction conditions at room temperature. Combined with the 3D-printed multifunctional fixed-bed reactor, the reaction process capable of adsorption-elution was designed for continuously realizing the deep adsorption of sulfide in fuel and the resource recovery of high-value sulfide products. The structure and physicochemical property of 3D-CeO2/ATP monolithic adsorbents were analyzed by series of characterizations, and the adsorption and elution mechanism were investigated in detail. The results reveal that the monolithic adsorbent with the internal staggered honeycomb structure was compared with that of the traditional in-line structure in terms of adsorption performance and computational fluid dynamics (CFD) fluid simulations, reflecting the advantages of 3D printing in structural forming to enhance mass transfer for promoting the adsorption process. Moreover, the 3D-printed monolithic adsorbents exhibit exceptional mechanical stability and good circulation performance, reaching the requirements for potential industrial application.
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