The synthesis of Fe-MCM-22 zeolite is reported for the first time. Its structure and characteristics are similar to those of the MCM-22 zeolite. The aluminum is in a framework tetrahedral position in the [Fe,Al]-MCM-22 samples. The white color of the samples, the increase of the29Si and27Al NMR linewidths with increasing Fe content and the constancy of the (Fe+Al)/u.c. values all suggest that Fe is also incorporated in tetrahedral position of the framework. © 1999 Elsevier Science B.V.
SYNTHESIS AND CHARACTERIZATION OF FE AND [FE-AL]-MCM-22 ZEOLITES
Testa, F.;Crea, F.;Pasqua, L.;AIELLO, ROSARIO;
1999-01-01
Abstract
The synthesis of Fe-MCM-22 zeolite is reported for the first time. Its structure and characteristics are similar to those of the MCM-22 zeolite. The aluminum is in a framework tetrahedral position in the [Fe,Al]-MCM-22 samples. The white color of the samples, the increase of the29Si and27Al NMR linewidths with increasing Fe content and the constancy of the (Fe+Al)/u.c. values all suggest that Fe is also incorporated in tetrahedral position of the framework. © 1999 Elsevier Science B.V.File in questo prodotto:
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