Silicalite-1 Encapsulated Fe Particles over an In-situ Crystal Process for Syngas to Gasoline with Low CO₂ Selectivity

Zeolite synthesis involved use of large volumes of solvent that resulted in waste and enhanced production costs. In our study, we selected a solvent-free synthesis route that involved mixing, grinding and crystallization at various times creating Fe@Silicalite-1. This synthesis method produced a hierarchical in-situ microporous crystal morphology with Fe particles caged inside zeolite displaying a high gasoline (C₅-C₁₁) selectivity of 66.0% with a relatively low CO₂ and CH₄ selectivity (18.5% and 10.0%, respectively) in Fischer-Tropsch synthesis. Prolonged crystallization time of 72 h and other subsequent procedures contributed to zeolite structure and performance. Iron moieties were appropriately immobilized over silicalite support. The characterization results were correlated with the zeolite activity and selectivity. This novel zeolite at its best possesses all the potential to be advanced in other related material synthesis because of its expedient procedure, characteristics and worthwhile outcomes.