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Showing 1 to 13 of 13 for “"Zeolite Y"”.

  1. Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts

    Galatolo, Paul Joseph VictorDepartment of Chemical Engineering1997

    … the catalysts within the cages of a zeolite, maintaining the activity of the catalyst while allowing it to be easily removed from the reaction medium ( eg. by filtration). However, all research reported so far has only considered rhodium catalysts (1,66-71,87). Furthermore, in most …

    cape-town Repository record

  2. Spectroscopic and photophysical studies of ruthenium (II) polypyridine complexes entrapped within zeolite-Y

    Bhuiyan, Anwarul Afsar

    marquette Repository record

  3. The deactivation of Zeolite-Y and mordenite during hexane cracking and propene oligomerisation

    Möller, Klaus PeterDepartment of Chemical Engineering1989

    The objective of this study was to determine the effect that the type of catalyst and reaction would have on the rate of deactivation, properties of coke and transport properties of the catalyst. HY and HM were chosen because of their different pore structures and acid site distributions. Hexane …

    cape-town Repository record

  4. Vanadium interaction with FCC catalysts

    Sarginson, James StanleyThe Open University1997

    … cracking catalysts, which contain a form of zeolite-Y as the main catalytically active component, are widply used commercially for the conversion of crude oil into more profitable product streams. During the cracking reaction, these catalysts are contaminated with vanadium which has a marked …

    the-open-u Repository record

  5. Gravimetric, neutron scattering and computational studies of the sorption and diffusion of gases in zeolites

    Cray, PM2026

    Zeolites are a class of aluminosilicate materials with many important industrial applications as catalysts, ion exchange materials and sorbents. A novel dynamic Monte Carlo program has been written that allows both the kinetic and equilibrium properties of zeolitic systems such as CaNa zeolite A …

    salford

  6. Catalytic conversion of Ethylbenzene over acid zeolites

    Mabaso, Evans ItaiDepartment of Chemical Engineering2000

    … was employed to compare the acidity of various zeolites, viz. lanthanum/sodium-exchanged zeolite Y (LaNaY-72), hygrogen/sodium-exchanged zeolote Y (LZY-52, LZY-62, LZY-82), hydrogen-exchanged zeolite Beta (H-BEA-15, H-BEA-25) and hydrogen-exchanged ZSM-5 (H-MFI-45).

    cape-town Repository record

  7. The oligomerization of propene over cobalt catalysts

    Dickens, Paul MichaelDepartment of Chemical Engineering1987

    … silica alumina, synthetic mica montmorillonite, zeolite Y and NH₄⁺-ZSM-5. A cobaltmolybdenum hydrodesulphurization catalyst was also tested. The synthesis procedures used in this work included double ammoniation (Co-C), incipient wetness impregnation (Co-C, alumina, NH₄⁺-ZSM-5), ion-exchange …

    cape-town Repository record

  8. Inclusion of Molybdenum into microporous and mesoporous materials

    Djajanti, SamithaUNSW, Sydney2018

    … using porous supports. The supports were zeolite Y types, large microporous cloverite, and mesoporous MCM-41. The large pore supports were used to produce catalysts that can accommodate catalysis reactions involving large molecules. The objective of this work is to study the preparation …

    unsw Repository record

  9. Heterogeneous Photooxidation of Trichloroethene on Titanium Oxides Encapsulated in Zeolites L and Y

    Craig, Gabriel Elmore

    … on titanium particles (TiOx) encapsulated in zeolite pores was studied using Transmission FT-IR. The decomposition was performed by utlizing two distinctly different pore structures. These were the interconnected supercages of zeolite Y and the parallel channeled system of zeolite L. The …

    mo-state Repository record

  10. Gas-solid chromatographic studies of two well-known catalysts

    Mason, Robert PeterDepartment of Chemistry1983

    … responsible for the dehydration of alcohols. Zeolite catalysts are well-known and in this work the catalytic cracking of alkanes over zeolite Y was studied. The reaction mechanism was found to be complex and catalyst deactivation due to build-up of highly carbonaceous deposits occurred. All …

    cape-town Repository record

  11. Conversion of methyl ethyl ketone (MEK) to valuable chemicals over multifunctional supported catalysts

    Al-Auda, Zahraa Fadhil ZuhwarKansas State University2018

    … over supported copper catalysts (Cu-Al₂O₃, Cu-zeolite Y sodium (Cu-ZYNa) and Cu-zeolite Y hydrogen (Cu-ZYH)) in a fixed bed reactor. In this reaction, MEK is hydrogenated to 2-butanol over metal sites, and further dehydrated on acid sites to produce butene. Experimental results showed that the …

    ksu Repository record

  12. Zeolite encapsulated metal complexes as heterogeneous catalysts for oxidation reactions

    Willingh, Gavin VonUniversity of the Western Cape2012

    … or modify the framework or structure of the zeolite, confirming successful immobilization of Schiff-bases through the voids of zeolite Y.These encapsulated complexes were screened as heterogeneous catalysts for various oxidation reactions such as such as phenol, benzene, styrene and …

    western-cape Repository record

  13. An investigation into the use of synthetic zeolites for in situ land reclamation.

    Rebedea, ILiverpool John Moores University1997

    … study to determine the feasibility of using zeolite addition for the in situ treatment of soils contaminated with heavy metals. The aim of the present work was to examine the effectiveness of three synthetic zeolites to reduce plant available metal pools in contaminated soils. Three …

    liverpool-jm Repository record