Synthesis design and structure of a multipore zeolite with interconnected 12- and 10-MR channels.
J Am Chem Soc
; 134(14): 6473-8, 2012 Apr 11.
Article
em En
| MEDLINE
| ID: mdl-22440136
ABSTRACT
A new molecular sieve, ITQ-38, containing interconnected large and medium pores in its structure has been synthesized. The rational combination of dicationic piperidine-derivative molecules as organic structure directing agents (OSDAs) with germanium and boron atoms in alkaline media has allowed the synthesis of ITQ-38 zeolite. High-resolution transmission electron microscopy (HRTEM) has been used to elucidate the framework topology of ITQ-38, revealing the presence of domains of perfect ITQ-38 crystals as well as very small areas containing nanosized ITQ-38/ITQ-22 intergrowths. The structure of ITQ-38 is highly related to ITQ-22 and the recently described polymorph C of ITQ-39 zeolite. It shares a common building layer with ITQ-22 and contains the same building unit as the polymorph C of ITQ-39. All three structures present similar framework density, 16.1 T atoms/1000 Å(3).
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Zeolitas
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Espanha