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Preparation and characterization of Pt/silicalite catalysts with high Pt loadings
Author(s) -
Rangwala H.A.,
Szymura J.A.,
Wanke S.E.,
Otto F.D.
Publication year - 1988
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450660519
Subject(s) - catalysis , chemisorption , zeolite , aqueous solution , transmission electron microscopy , ammonia , characterization (materials science) , hydrogen , materials science , inorganic chemistry , chemistry , chemical engineering , nuclear chemistry , organic chemistry , nanotechnology , engineering
Methods for preparing Pt/silicalite catalysts are described. Equilibration of silicalite, a pentasil zeolite, in aqueous solutions of Pt(NH 3 ), Cl 2 containing excess ammonia resulted in Pt/silicalite catalysts with Pt loadings of ≥7 wt%. The Pt/silicalite catalysts were characterized by hydrogen chemisorption, X‐ray diffraction and transmission electron microscopy. The characterization studies showed that the majority of the Pt in the heavily loaded catalysts was located in the silicalite pores, and the Pt dispersions in these catalysts exceeded 0.8.