A new microporous zeolitic silicoborate (ITQ-52) with interconnected small and medium pores
Fecha
Directores
Editores
Otras autorías
Unidades organizativas
Handle
https://riunet.upv.es/handle/10251/61872
Cita bibliográfica
Simancas Coloma, R.; Jorda Moret, JL.; Rey Garcia, F.; Corma Canós, A.; Cantin Sanz, A.; Peral, I.; Popescu, C. (2014). A new microporous zeolitic silicoborate (ITQ-52) with interconnected small and medium pores. Journal of the American Chemical Society. 136(9):3342-3345. doi:10.1021/ja411915c
Titulación
Resumen
A new zeolite (named as ITQ-52) having large cavities and small and medium channels has been synthesized. This was achieved by using a new family of amino-phosphonium cations as organic structure directing agents (OSDA). These cations contain P−C and P−N
bonds, and therefore they lie between previously reported P-containing OSDA, such as tetraalkylphosphonium and phosphazenes. In this study, it has been found that 1,4-
butanediylbis[tris(dimethylamino)]phosphonium dication is a very efficient OSDA for crystallization of several zeolites, and in some particular conditions, the new zeolite
ITQ-52 was synthesized as a pure phase. The structure of ITQ-52 has been solved using high-resolution synchrotron X-ray powder diffraction data of the calcined solid. This new zeolite crystallizes in the space group I2/m, with cell parameters a = 17.511 Å, b = 17.907 Å, c = 12.367 Å, and β = 90.22°. The topology of ITQ-52 can be described as a replication of a composite building unit with ring notation [435461] that gives rise to the formation of an
interconnected 8R and 10R channel system.
Palabras clave
Fuente
Journal of the American Chemical Society issn: 0002-7863