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 drygel 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 Xray spectrometer, scanning electron microscope, temperatureprogrammed desorption and BrunnerEmmettTeller. 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.