The structural stability at high temperatures of both Cu-exchanged SAPO-34 and CuAPSO-34 with isomorphously substituted copper ions has been investigated. SAPO-34 undergoes an extensive crystallinity loss upon copper ion exchange. The CuAPSO-34 framework showed good hydrothermal stability, as reflected in its surface area and X-ray diffraction pattern after ageing treatments. This catalyst exhibited good activity in N2O decomposition even when the reaction was run in the presence of H2O or after ageing treatment under H2O vapor at 600 C for 80 h which, conversely, led to a drastic loss of activity of Cu-ZSM-5.
CuAPSO-34 Catalysts for N2O Decomposition in the Presence of H2O. A Study of Zeolitic Structure Stability in Comparison to Cu-SAPO-34 and Cu-ZSM-5 / Frache, ; Palella, BORIS IGOR; M., Cadoni; R., Pirone; H. O., Pastore; L., Marchese. - In: TOPICS IN CATALYSIS. - ISSN 1022-5528. - STAMPA. - 22:(2003), pp. 53-59.
CuAPSO-34 Catalysts for N2O Decomposition in the Presence of H2O. A Study of Zeolitic Structure Stability in Comparison to Cu-SAPO-34 and Cu-ZSM-5
PALELLA, BORIS IGOR;
2003
Abstract
The structural stability at high temperatures of both Cu-exchanged SAPO-34 and CuAPSO-34 with isomorphously substituted copper ions has been investigated. SAPO-34 undergoes an extensive crystallinity loss upon copper ion exchange. The CuAPSO-34 framework showed good hydrothermal stability, as reflected in its surface area and X-ray diffraction pattern after ageing treatments. This catalyst exhibited good activity in N2O decomposition even when the reaction was run in the presence of H2O or after ageing treatment under H2O vapor at 600 C for 80 h which, conversely, led to a drastic loss of activity of Cu-ZSM-5.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
