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Alkylation of Toluene with Methanol Over AlPO4, AlPO4-Al2O3, AlPO4-TiO2, and AlPO4-ZrO2 Catalysts.-In view of the great industrial importance of reactions of aromatic hydrocarbons on acidic catalysts, for the first time the catalytic activity and selectivity for alkylation of toluene with methanol by AlPO4 and AlPO4/metal oxide are investigated in the temp. range 673-873 K. The results support the supposition that surface Broensted acid sites of AlPO4 are affected by the nature of the loaded metal oxide. Thus, the best result is obtained with Al2O3. The systems act as catalysts in the ring methylation, but not in xylene isomerization or toluene disproportionation. Also, side-chain-methylation is rare. -(BLANCO, A.; CAMPELO, J. M.; GARCIA, A.; LUNA, D.; MARINAS, J. M.; ROMERO, A. A.; J.

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