Acidic and catalytic properties of the Ca-Pt-H-mordenite system

Vishnoi, Savita ; Ratnasamy, Paul (1981) Acidic and catalytic properties of the Ca-Pt-H-mordenite system Journal of Catalysis, 72 (1). pp. 111-120. ISSN 0021-9517

Full text not available from this repository.

Official URL:

Related URL:


The acid strength distribution and catalytic behavior (activity, selectivity, and deactivation in the reactions of ortho-xylene) of H-mordenite (HM), calcium mordenite (CaM), platinum H-mordenite (PtHM), calcium platinum H-mordenite (CaPtHM) and calcium platinum H-dealuminated-mor-denite (DCaPtHM) have been studied. Measurement of the isosteric heats of adsorption of NH3 indicate that the concentration of strong acid sites in these catalysts follow the order: HM > DCaPtHM > CaPtHM > PtHM > CaM. Their initial activity for the conversion of ortho-xylene decreases as HM > DCaPtHM > PtHM > CaPtHM > CaM. The selectivity of these catalysts in yielding isomeric xylenes rather than non-C8 aromatics by disproportionation reaction decreases in the following order: CaM > DCaPtHM > HM > CaPtHM > PtHM. The catalyst undergo deactivation due to coke formation in the following order: HM > DCaPtHM > CaPtHM > PtHM=CaM. An attempt is made to correlate the observed catalytic behavior with the acidic and steric features of the catalysts.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:41389
Deposited On:28 May 2011 09:37
Last Modified:28 May 2011 09:37

Repository Staff Only: item control page