Incorporation of mixed metals into SAPO 34 frameworks by the dry gel conversion method using mixed templates: investigating catalysts characterisation and performance
ABSTRACT The crystallisation of the MeAPSO 34 material was studied under dry gel conversion conditions and using two and three templates. This study has been focused on the effect of the incorporation of a mixture of Ni and Mn into the SAPO 34 framework. The MeSAPO 34 samples were characterised by X ray diffraction, energy dispersive X ray spectrometer, scanning electron microscope, temperature programmed desorption and Brunner Emmett Teller. The influence of metal incorporation into the framework of SAPO 34 (MeAPSO 34) on methanol conversion was investigated in this study. The performances on methanol conversion for these catalysts were different according to the properties of metals incorporated into the SAPO 34 structure. The catalytic performance demonstrated high activity and light olefins selectivity for the prepared catalysts. Among the light olefin products, Mn and Ni incorporation is helpful for propylene generation, but samples with a mixture of Ni and Mn favour the ethylene production.