Results 181 to 190 of about 19,084 (216)

Isomorphous Substitution in Zeolite Zsm-5

1989
A series of metal-substituted silicalite samples has been prepared. Preliminary experiments indicate that some of the metal species occupy framework sites in the zeolite structure. An interesting feature of all of the products is the large size of the crystallites, some being as much as 500μm long.
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Acidic properties of nanolayered ZSM-5 zeolites

Microporous and Mesoporous Materials, 2014
The acidic properties of nanolayered ZSM-5 zeolites synthesized with the aid of multiquaternary ammonium surfactants were investigated in detail. A substantial fraction of Al is present in highly dispersed form at extraframework positions indicative of the defective nature of the calcined nanolayered zeolites.
Wu, L., Magusin, P.C.M.M., Degirmenci, V., Li, M., Almutairi, S.M.T., Zhu, X., Mezari, B., Hensen, E.J.M.   +7 more
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ZSM-5 türü zeolit sentezi ve karakterizasyonu

2020
ABSTRACT ZSM=5 zeolite samples have been produced using a primary monoalkyl amine (n-propylamine or i-bütylamine) as a template, sodium silicate solutions which had two differenLcompositions as. sources of silica, and aluminum sulphate, Aİ2(S04)3.18HaO, as a source of alumina in the initial gel.
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ZSM-5 zeolite modified with vanadyl ions

Zeolites, 1994
Abstract Properties of the ZSM-5 zeolite modified with VO2+ ions in a one-step exchange reaction in water medium have been investigated. Physicochemical characterization (chemical analysis, XRD, MAS n.m.r., e.s.r.) shows that during the preparation the ZSM-5 zeolite structure remains preserved and the vanadyl ions enter the zeolite structure.
J. Komorek, T. Romotowski, E.M. Serwicka, V.M. Mastikhin   +3 more
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Manufacture of ZSM-5 zeolites

Zeolites, 1995
J.P. Verduijn, L.R.M. Martens, J.A. Martens   +2 more
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Reactions on ZSM-5-type zeolite catalysts

Journal of Catalysis, 1979
Abstract Catalytic reactions and sorption measurements have been carried out with ZSM-5 and silicalite catalysts which are distinguished by variation in skeletal heteroatom concentration. The catalysts were used in both the hydrogen-exchanged and sodium-exchanged forms.
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Methane activation by ZSM-5-supported transition metal centers

Chemical Society Reviews, 2021
Daniyal Kiani, Sagar Sourav, Jonas Baltrusaitis   +2 more
exaly  

Synthesis of zeolite ZSM-5

Zeolites, 1988
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Propene Oligomerization Over H-ZSM-5 Zeolite

1988
Abstract Oligomerization of propene over a fixed bed of H-ZSM-5 zeolite (1.22 wt.% Al) at 24 bar and 462K gives dimer (C 6 ), trimer (C 9 ), tetramer (C 12 ). etc-without shape selectivity. Reaction probably occurs on the external surface of the zeolite particles, producing branched oligomers with a distribution not unlike that in commercial polymer ...
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Acidity in Zeolite ZSM-5

1983
G. W. SKEELS, W. H. FLANK
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