Abstract
NaOH treated silicalite-1/CuYOH core–shell composites were synthesized at the mass ratio of tetraethyl orthosilicate (TEOS)/tetrapropylammonium hydroxide (TPAOH)/ethanol/H2O/CuY = 20 g (0.096 molar):19 g (0.0234 molar):17 g (0.369 molar):87 g (4.8293 molar):5 g to achieve the selective adsorption desulfurization of dimethyl disulfide (DMDS) from methyl tert-butyl ether (MTBE). As the core zeolite, CuY was obtained by Cu2+ ion-exchange on NaY. After alkali treatment, NaY zeolite was provided with more loading positions for silicalite-1 crystals owing to the desilication effect of NaOH. Results showed that the core–shell YOH-CuCl2 displayed the best performance in desulfurizing DMDS from MTBE with a sulfur adsorption capacity of 37.073 mgs/gadsorbent for the sake of its significant mass gain and compact silicalite-1 coatings. The preparation of silicalite-1/CuYOH core–shell composites and the shape selective adsorption mechanism of desulfurizing DMDS on these core–shell composites were expounded.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.