Coke deposition and shape-selectivity in the alkylation of biphenyl and naphthalene over H-mordenite: Effect of dealumination
- National Institute of Materials and Chemical Research, Tsukuba, Ibaraki (Japan); and others
Shape-selective alkylation of polynuclear aromatics is the promising way to introduce functional groups for synthesis of advanced materials. We have found H-mordenite is highly potential catalyst for the shape-selective alkylation of biphenyl and naphthalene. The reaction inside pores gives the slimmest isomers such as 4,4`-diisopropylbiphenyl (4,4`-DIBP) for biphenyl and 2,6-diisopropyl-naphthalene (2,6-DIPN) for naphthalene because of their minimum steric requirement at the transition state. However, coke deposition did occur at acid sites to deactivate the catalysis of H-mordenites with low SiO{sub 2}/Al{sub 2}O{sub 3} ratio. The dealumination of H-mordenite can modify acidic properties to decrease the formation of coke deposits and coke. In this paper, we will report the effect of dealumination of H-mordenite on coke deposition and shape-selectivity in the isopropylation of biphenyl and naphthalene.
- OSTI ID:
- 215002
- Report Number(s):
- CONF-950801--
- Country of Publication:
- United States
- Language:
- English
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