Premium
The Important Role of Rubidium Hydroxide in the Synthesis of Hierarchical ZSM‐5 Zeolite Using Cetyltrimethylammonium as Structure‐Directing Agent
Author(s) -
Wannapakdee Wannaruedee,
Meng Lingqian,
van Hoof Arno J. F.,
Bolshakov Alexsei,
Wattanakit Chularat,
Hensen Emiel J. M.
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900324
Subject(s) - chemistry , zeolite , physisorption , mesoporous material , microporous material , sodalite , hydroxide , bifunctional , zsm 5 , inorganic chemistry , catalysis , chemical engineering , methanol , organic chemistry , engineering
Hierarchical ZSM‐5 zeolite with uniform mesopores was synthesized with a simple cetyltrimethylammonium (CTA + ) template, which acted as a bifunctional surfactant in a RbOH‐based alkaline synthesis gel. Rb + plays a key role in obtaining uniform mesopores within ZSM‐5 crystals. The structural, textural properties and the acidity were characterized by XRD, Ar physisorption, TEM, as well as CO IR and 27 Al MAS NMR spectroscopy. These data point to partial retention of the initial mesoscale ordered texture of the precursor in the final zeolite. These textural properties result in a strongly improved catalytic performance in the methanol conversion reaction compared to bulk zeolite.