Journal ArticleDOI
Determination of the Pore Topology of Zeolite IM-5 by Means of Catalytic Test Reactions and Hydrocarbon Adsorption Measurements
A. Corma,A. Chica,J.M. Guil,Francisco J. Llopis,Gil Mabilon,J.A. Perdigón-Melón,Susana Valencia +6 more
TLDR
The pore topology of a recently synthesized zeolite IM-5 has been determined by means of catalytic test reactions, i.e., n -decane hydroisomerization-cracking, m -xylene isomerization−disproportionation, n -hexadecane isodewaxing, and adsorption-microcalorimetry of molecules with different sizes and shapes as mentioned in this paper.About:
This article is published in Journal of Catalysis.The article was published on 2000-01-25. It has received 96 citations till now. The article focuses on the topics: Xylene & Decane.read more
Citations
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Journal ArticleDOI
Fluid catalytic cracking: recent developments on the grand old lady of zeolite catalysis.
TL;DR: Fluid catalytic cracking (FCC) is one of the major conversion technologies in the oil refinery industry, and the largest commercial catalytic process that uses zeolite materials.
Journal ArticleDOI
Structure of the polycrystalline zeolite catalyst IM-5 solved by enhanced charge flipping.
Christian Baerlocher,Fabian Gramm,Lars Massüger,Lynne B. McCusker,Zhanbing He,Sven Hovmöller,Xiaodong Zou +6 more
TL;DR: A charge-flipping structure-solution algorithm is presented, extended to facilitate the combined use of powder diffraction and electron microscopy data, and elucidated the complex structure of zeolite catalyst IM-5, with 24 topologically distinct silicon atoms and an unusual two-dimensional medium-pore channel system.
Journal ArticleDOI
A zeolite with interconnected 8-, 10- and 12-ring pores and its unique catalytic selectivity.
TL;DR: A zeolite containing fully interconnected 8-, 10- and 12-membered-ring pores, synthesized by combining the structure-directing effect of the organic 1,5-bis-(methylpyrrolidinium)-pentane and the framework isomorphic substitution of germanium for silicon, presents unique catalytic shape-selectivity effects derived from its particular pore topology.
Journal ArticleDOI
Conversion of methanol over 10-ring zeolites with differing volumes at channel intersections: comparison of TNU-9, IM-5, ZSM-11 and ZSM-5
Francesca Lønstad Bleken,Wegard Skistad,Katia Barbera,Marina Kustova,Silvia Bordiga,Pablo Beato,Karl Petter Lillerud,Stian Svelle,Unni Olsbye +8 more
TL;DR: Effluent yield-conversion plots suggested that polymethylated benzene intermediates were more important in IM-5 and TNU-9 than in ZSM-5, where alkene methylation and cracking reactions seemed to dominate product formation, but this difference had only minor influence on effluent selectivity.
Journal ArticleDOI
Changing the Si distribution in SAPO-11 by synthesis with surfactants improves the hydroisomerization/dewaxing properties
TL;DR: In this article, the silicoaluminophosphates SAPO-11 isodewaxing catalysts were synthesized with varying Si content following conventional methods and using a route involving the presence of surfactant.
References
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Journal ArticleDOI
MCM-22: A Molecular Sieve with Two Independent Multidimensional Channel Systems
TL;DR: The molecular sieve MCM-22 contains structural features previously unobserved in this class of materials, including an unusual -T-O-T- chain that passes through the center of a modified dodecasil-1H cage.
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Shape-selective catalysis in zeolites
TL;DR: The shape-selective catalysis as discussed by the authors was proposed to increase the selectivity of a desired product and reduce the coke formation in zeolite catalysts by reducing the number of catalytic sites inside the pore structure.
Shape-selective catalysis in zeolites
TL;DR: In this paper, a study was made of the selectivity of zeolite catalysts due to the shape and size of their pore diameters, and they had pores with one or more discreet sizes.
Journal ArticleDOI
SAPO-11, SAPO-31, and SAPO-41 Molecular Sieves: Synthesis, Characterization, and Catalytic Properties inn-Octane Hydroisomerization☆
TL;DR: In this article, a large-pore SAPO-5 and a medium-POR SAPO were synthesized using a hydrothermal method, and they were characterized by chemical analysis, XRD, SEM, IR, TPD of NH 3, and MAS NMR; Pt dispersion was measured by H 2 adsorption.
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Estimation of the void structure and pore dimensions of molecular sieve zeolites using the hydroconversion of n-decane
TL;DR: In this paper, a reaction catalytique test is used for obtenir des donnees sur the structure of zeolites inconnues in the presence of palladium sous forme palladium.