We synthesized four different Nu-1-type zeolites containing, respectively, Al, B, Ga, and Fe as the trivalent element. With the exception of B-Nu-1, the synthesis is difficult because of the competitive formation of other crystalline phases as sodalite, ZSM-39-type, or glassy phases. The trivalent elements isomorphous substitution was demonstrated by X-ray powder diffraction, FTi.r., e.s.r., u.v.-Vis., and 27Al, 11B, and 71Ga-MAS-n.m.r. By the same techniques and t.g.a. measurements, we evaluated the thermal stability of the different Nu-1-type zeolites.

Synthesis and comparative characterization of Al, B, Ga, and Fe containing Nu-1-type zeolitic framework / G. Bellussi, R. Millini, A. Carati, G. Maddinelli, A. Gervasini. - In: ZEOLITES. - ISSN 0144-2449. - 10:7(1990), pp. 642-649.

Synthesis and comparative characterization of Al, B, Ga, and Fe containing Nu-1-type zeolitic framework

A. Gervasini
1990

Abstract

We synthesized four different Nu-1-type zeolites containing, respectively, Al, B, Ga, and Fe as the trivalent element. With the exception of B-Nu-1, the synthesis is difficult because of the competitive formation of other crystalline phases as sodalite, ZSM-39-type, or glassy phases. The trivalent elements isomorphous substitution was demonstrated by X-ray powder diffraction, FTi.r., e.s.r., u.v.-Vis., and 27Al, 11B, and 71Ga-MAS-n.m.r. By the same techniques and t.g.a. measurements, we evaluated the thermal stability of the different Nu-1-type zeolites.
characterization; synthesis; TS-1; ZSM-5
Settore CHIM/02 - Chimica Fisica
ZEOLITES
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/195774
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