Isomorphic substitution of boron in ZSM-5 type zeolite; Preparation and characterization

Substitution of silicon in crystalline molecular sieve structures by various hetroatoms has been a topic of interest for past few decades. The isomorphous substitution of Al and/or Si by other tri- and tetravalent metal ions is generally considered as a tool for modifying the acidic and catalytic properties of zeolites. In this work crystalline zeolite B-ZSM-5 has been synthesized via "Templating method" under static hydrothermal synthesis using tetraethylorthosilicate (TEOS) and tetrapropylammonium bromide (TPABr) as the silica source and structure directing agent, respectively. Characterization of the product zeolite was carried out by Fourier-transformed infrared (FTIR) and X-Ray diffraction methods.

Keywords:

B-ZSM-5 , Zeolite , Boron , TPABr , FTIR