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Confinement in a Zeolite and Zeolite Catalysis
Accounts of Chemical Research, 2021ConspectusZeolites, accompanied by their initial discovery as natural mines and the subsequent large-scale commercial production, have played indispensable roles in various fields such as petroleum refining and the chemical industry. Understanding the characteristics of zeolites, in contrast to their counterparts with similar chemical compositions and ...
Yuchao Chai +4 more
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ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Pramatha Payra, Prabir K. Dutta
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AbstractFor Abstract see ChemInform Abstract in Full Text.
Pramatha Payra, Prabir K. Dutta
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Lab on a Chip, 2003
Free-standing silicalite-1 (Sil-1) zeolite micromembranes have been successfully fabricated onto silicon substrate. Gas permeation test using permanent gases (i.e., helium, hydrogen, argon and nitrogen) and hydrocarbons (i.e., methane and n-butane) indicates that the micromembranes have excellent permeance flux and high permselectivity.
Chau, JLH, Leung, AYL, Yeung, KL
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Free-standing silicalite-1 (Sil-1) zeolite micromembranes have been successfully fabricated onto silicon substrate. Gas permeation test using permanent gases (i.e., helium, hydrogen, argon and nitrogen) and hydrocarbons (i.e., methane and n-butane) indicates that the micromembranes have excellent permeance flux and high permselectivity.
Chau, JLH, Leung, AYL, Yeung, KL
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Zeolites and zeolite-like materials
Pure and Applied Chemistry, 1986Abstract
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2014
Zeolite membranes are selective barriers, which can be supported or not, and prepared with well-defined aluminosilicate crystalline structures having a uniform and well-defined porous framework. Zeolites are attractive molecular sieve materials which have been used for a long time as adsorbents, catalysts, and softeners in detergents (ion-exchange ...
Julbe, Anne, Drobek, Martin
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Zeolite membranes are selective barriers, which can be supported or not, and prepared with well-defined aluminosilicate crystalline structures having a uniform and well-defined porous framework. Zeolites are attractive molecular sieve materials which have been used for a long time as adsorbents, catalysts, and softeners in detergents (ion-exchange ...
Julbe, Anne, Drobek, Martin
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Zeolite content determination in zeolitic catalysts
Applied Catalysis, 1982Abstract A method of X-ray diffraction and one of vaporization of a liquid adsorbate were compared to determine the zeolite content in silica-alumina-NaY zeolite mixtures. For mixtures with low zeolite content, the vaporization of benzene at controlled temperature seemed to be more reliable than the X-ray diffraction method.
Ruby Cid, M.E. Konig, R. Arriagada
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2014
Zeolite X, together with zeolite Y, belongs to the family of aluminosilicate molecular sieves with a faujasite-type structure (FAU). It is characterized by the formula |(Ca, Mg, Na 2) 29 (H 2O) 240|[Al 58Si 134O 384]– FAU (International zeolite association (IZA)).
Julbe, Anne, Drobek, Martin
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Zeolite X, together with zeolite Y, belongs to the family of aluminosilicate molecular sieves with a faujasite-type structure (FAU). It is characterized by the formula |(Ca, Mg, Na 2) 29 (H 2O) 240|[Al 58Si 134O 384]– FAU (International zeolite association (IZA)).
Julbe, Anne, Drobek, Martin
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Texture of zeolites and zeolite‐containing solids
Recueil des Travaux Chimiques des Pays-Bas, 1980AbstractTexture studies, in which specific surface area and total pore volume were determined by low temperature nitrogen adsorption, were carried out on a number of porous solids, ranging from cation‐exchanged Y‐zeolites, impregnated with β‐AlF3 and copper, to steamed silica‐alumina. The zeolites were impregnated with β‐AlF3 and Cu in order to improve
L. E. Aneke +2 more
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EPR Imaging on Zeolites and Zeolite Catalysts
2018This chapter demonstrates the possibilities of using electron paramagnetic resonance (EPR) imaging as a useful tool for the characterization of diffusion and coking processes in zeolite powders and in pelletized zeolite catalysts. The measurements have been carried out by using a conventional EPR spectrometer ERS 221 and the accessory unit ZZG1 for ...
K. Ulbricht +6 more
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