Abstract
This paper reports a comparison of the structure and catalytic properties of zeolite-Y whendealuminated by hydrothermal and ammonium hexafluorosilicate treatments. Initial results have shown that dealumination using ammonium hexafluorosilicate is highly sensitive to many of the reaction parameters such as reaction temperature, rate of AHFS addition, reaction time, pH, framework Si/Al ratio and also to the extent of washing of the final product. Further, degrees of dealumination beyond 50% are difficult to obtain without causing decreases in framework crystallinity. Structural characterisation of the samples has been performed using X-ray diffraction, X-ray fluorescence spectroscopy, nitrogen adsorption and 27 Al MAS NMR. The catalytic properties of the samples were studied using the n-butane cracking reaction. In future work, analysis of the cracking data will be performed as well as a detailed comparison of the deactivation processes occurring within the samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
