Effects of Synthesis Method on the Physicochemical Properties and Catalytic Activity of BEA Zeolite in Toluene Disproportionation: Fid-Bau Portal

Effects of Synthesis Method on the Physicochemical Properties and Catalytic Activity of BEA Zeolite in Toluene Disproportionation

Ponomareva, O. A. / Andriako, E. P. / Dubtsova, A. P. / Vdovchenko, N. K. / Vorobkalo, V. A. / Dobryakova, I. V. / Rodionova, L. I. / Shutkina, O. V. / Ivanova, I. I.

Abstract

A series of BEA-type zeolites with SiO₂/Al₂O₃ ratios of about 50 were synthesized by steam-assisted (SAC) and hydrothermal crystallization (HTC) in fluoride and alkaline media. Their physicochemical properties were characterized by low-temperature nitrogen adsorption, XRD, SEM, XRF, and NH₃-TPD. The catalytic performance was investigated in liquid-phase toluene disproportionation. The SAC-synthesized samples were distinguished by a higher concentration of acid sites. The BEAs prepared by SAC in alkaline media exhibited a higher activity in toluene disproportionation. The samples synthesized in fluoride media, both by steam-assisted and hydrothermal crystallization, proved to be comparable in activity.

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Effects of Synthesis Method on the Physicochemical Properties and Catalytic Activity of BEA Zeolite in Toluene Disproportionation

Ponomareva, O. A. / Andriako, E. P. / Dubtsova, A. P. / Vdovchenko, N. K. / Vorobkalo, V. A. / Dobryakova, I. V. / Rodionova, L. I. / Shutkina, O. V. / Ivanova, I. I.

Abstract

Effects of Synthesis Method on the Physicochemical Properties and Catalytic Activity of BEA Zeolite in Toluene Disproportionation

Ponomareva, O. A. / Andriako, E. P. / Dubtsova, A. P. / Vdovchenko, N. K. / Vorobkalo, V. A. / Dobryakova, I. V. / Rodionova, L. I. / Shutkina, O. V. / Ivanova, I. I.