Synthesis of zeolite zsm-35

Details Synthesis of zeolite zsm-35 Synthesis of zeolite zsm-35

C - Chemistry, Metallurgy

01

B

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C01B 39/44 (2006.01) B01J 29/65 (2006.01)

Patent

CA 2035453

The synthesis of ZSM-35 involves maintaining at 80 to 250°C for 16 hours to 60 days a mixture comprising sources of alkali or alkaline earth metal cations (M), an oxide of trivalent element (X), an oxide of tetravalent element (Y), water and a hexamethyleneimine directing agent, and having a composition, in terms of mole ratios, within the following ranges: YO2/X2O3 ~~15 to 35 H2O/YO2 ~~10 to 100 OH-/YO2 ~~0.15 to 0.5 M/YO2 ~~0.15 to 0.5 R/YO2 ~~0.1 to 1.0 R/M2O ~~0.5 to 3.6.

Le procédé de synthèse de la zéolite ZSM-35 consiste à maintenir à des températures comprises entre 80 et 250 °C pendant une période comprise entre 16 heures et 60 jours un mélange, qui contient: des sources de cations d'un métal alcalin ou alcalino-terreux (M); un oxyde d'un élément trivalent (X); un oxyde d'un élément tétravalent (Y); de l'eau; et un agent directif à base d'hexaméthylène-imine; et dont les composants présentent des rapports molaires compris: entre 15 et 35 pour YO2/X2O3; entre 10 et 100 pour H2O/YO2; entre 0,15 et 0,5 pour OH-/YO2; entre 0,15 et 0,5 pour M/YO2; entre 0,1 et 1,0 pour R/YO2; et entre 0,5 et 3,6 pour R/M2O.

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