Novel approach towards Al-rich AFI for catalytic application

0517389 - ÚFCH JH 2020 RIV NL eng J - Journal Article
Zhou, Yong - Žilková, Naděžda - Shamzhy, M. - Avadhut, Y. S. - Hartmann, M. - Čejka, J. - Opanasenko, M.
Novel approach towards Al-rich AFI for catalytic application.
Applied Catalysis A - General. Roč. 577, MAY 2019 (2019), s. 62-68. ISSN 0926-860X. E-ISSN 1873-3875
Institutional support: RVO:61388955
Keywords : zeolite synthesis * pore * alkylation * substitution * biphenyl * toluene * beta * ith * utl * fe * afi * Zeolite * Germanosilicate * Isomorphous substitution * Toluene alkylation
OECD category: Physical chemistry
Impact factor: 5.006, year: 2019
Method of publishing: Limited access

A new germanosilicate structural analogue of AFI zeolite (Ge-AFI) was hydrothermally synthesized. One- and two-step alumination of the Ge-AFI zeolites were used to modify their structure and acidic properties traced using XRD, N-2 adsorption, ICP-OES, Al-27 NMR, and FTIR spectroscopy. Two-step aluminated sample (deGe-Al-AFI) provided a higher Al content, stronger acid sites and a higher micropore volume than one-step aluminated sample (Al-AFI). Extensive evaluation of the catalytic performance of these AFI zeolites compared with reference conventional zeolite catalysts for alkylation of toluene with isopropyl alcohol showed that deGe-Al-AFI exhibited relatively high toluene conversion and selectivity to valuable p-cymene due to the optimized textural and acidic properties.
Permanent Link: http://hdl.handle.net/11104/0302708