Determination of the Pore Topology of Zeolite IM-5 by Means of Catalytic Test Reactions and Hydrocarbon Adsorption Measurements

• Published in: Journal of catalysis Vol. 189; no. 2; pp. 382 - 394
• Main Authors: Corma, A., Chica, A., Guil, J.M., Llopis, F.J., Mabilon, G., Perdigón-Melón, J.A., Valencia, S.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 25-01-2000; Elsevier
• Subjects: Catalysis; Catalysts: preparations and properties; Chemistry; Exact sciences and technology; General and physical chemistry; IM-5 adsorption properties; IM-5 catalytic activity; IM-5 zeolite; pore topology; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; IM-5 catalytic activity; IM-5 adsorption properties; IM-5 zeolite; pore topology; Catalytic reaction; Disproportionation; Hydrocarbon; Pore structure; Isomerization; Adsorption isotherm; Zeolite; X ray diffraction; Molecular sieve; Hexadecane; m-Xylene; Heterogeneous catalysis; Decane; Alkane; Benzenic compound; Catalyst activity
• ISSN: 0021-9517; 1090-2694
• DOI: 10.1006/jcat.1999.2718

The pore topology of a recently synthesized zeolite IM-5 has been determined by means of catalytic test reactions, i.e., n-decane hydroisomerization–cracking, m-xylene isomerization–disproportionation, n-hexadecane isodewaxing, and adsorption–microcalorimetry of molecules with different sizes and shapes (n-hexane, toluene, m-xylene, and 1,3,5 trimethylbenzene). It has been found that the channel network consists of a system of unidirectional 10 MR with lobes or side pockets, or crossing 10 membered ring pores with a pore diameter somewhat smaller than those in ZSM-5. This structure offers interesting shape selectivity features for catalytic reactions.