Optimization of SiO2/Al2O3 mole ratio of mordenite for n-pentane isomerization

Koradia, Pramod

doi:10.1016/0021-9517(80)90033-0

Cited by 52 publications

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“…Asuquo et al also note that by varying the aluminum content, the maximum rate of n-butane conversion was obtained at a SiO 2 /Al 2 O 3 ratio of 15, with Si/Al ratios of 10 and 20 both yielding lower rates [28]. Other studies demonstrate that the maximum activity of acidic mordenite has been found at a Si/Al ratio of 15 for a variety of other target reactions [64][65][66][67]. De Rossi et al found that ZSM-5 catalysts ranging from purely siliceous to a Si/Al ratio of 120 were catalytically inert [53].…”

Section: Influence Of Acid Site Densitymentioning

confidence: 95%

Butane Isomerization as a Diagnostic Tool in the Rational Design of Solid Acid Catalysts

et al. 2020

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The growing demand for isobutane as a vital petrochemical feedstock and chemical intermediate has for many decades surpassed industrial outputs that can be supplied through liquified petroleum gases. Alternative methods to resource the isobutane market have been explored, primarily the isomerization of linear n-butane to the substituted isobutane. To date the isobutane market is valued at over 20 billion US dollars, enticing researchers to seek unique and novel catalytic materials to improve on current commercial practices. Two main classes of catalysts have dominated the butane isomerization literature in the last few decades; namely microporous zeolites and sulfated zirconia. Both have been widely researched for butane isomerization, to the point where key catalytic descriptors such as acidity, framework topology and metal doping are becoming well understood. While this provides new researchers with a roadmap for developing new materials, it is has also begun developing into an invaluable tool for diagnosing and understanding the effect of these individual descriptors on catalytic properties. In this review we explore the different factors that influence the active site behavior of particularly zeolites and sulfated zirconia catalysts towards understanding the use of butane isomerization as a diagnostic tool for solid-acid catalysts.

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Section: Influence Of Acid Site Densitymentioning

confidence: 95%

Butane Isomerization as a Diagnostic Tool in the Rational Design of Solid Acid Catalysts

et al. 2020

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“…A maximum catalytic activity was obtained for Pt/mordenite with a Si/Al ratio of about 10, for which all the framework Al atoms are isolated, and consequently, present the highest acid strength (38,39). However, if the only factor controlling the zeolite acidity is the framework Si/Al ratio, one should obtain the same activity for a given Si/Al ratio, irrespective of the method of dealumination used.…”

Section: Fig 23 Bifunctional Mechanism For N-paraffin Isomerizationmentioning

confidence: 97%

The Chemistry of Catalytic Processes

Corma¹,

Martínez²

2002

Zeolites for Cleaner Technologies

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Isomerization

Sie

2008

Handbook of Heterogeneous Catalysis

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The sections in this article are Introduction Mechanism of Skeletal Isomerization of C 5+ Alkanes with Acid Catalysts Reaction Cycle in Isomerization of Alkanes The Isomerization Reaction: Rearrangement of the Intermediate Carbenium Ion Supporting Evidence for the Protonated Cyclopropane ( PCP ) Isomerization Mechanism Reactions with n ‐Butane Effect of Chain Length on the Relative Rates of Isomerization of n ‐Alkanes Location of Branching in Isomerized Alkanes Chain Termination Reactions: Catalyst Deactivation Acid‐catalyzed Cracking and Isomerization: Effect of Chain Length on Selectivity for Isomerization Mechanism of C 4 Alkane Isomerization Isomerization Catalysts Monofunctional Acidic Catalysts Bifunctional Catalysts Isomerization of Pentanes and Hexanes for Octane Enhancement Octane Numbers and Thermodynamic Equilibrium Concentrations of Isomeric Pentanes and Hexanes Processes for Isomerization of Pentanes and Hexanes Processes Using Aluminum Chloride/Hydrochloric Acid as Monofunctional Catalyst Processes Using Bifunctional Catalysts Consisting of Pt Supported on Chlorinated Alumina Processes Using a Noble Metal on Amorphous Silica–Alumina as Bifunctional Catalyst Processes Using a Noble Metal on Zeolite as Bifunctional Catalyst Combining C 5 and C 6 Alkane Isomerization with Physical Separations Processes for Isomerization of Higher Alkanes Processes for Conversion of n ‐Butane to Isobutane Role of Alkane Isomerization in the Hydrocarbon Processing Industry

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Optimization of SiO2/Al2O3 mole ratio of mordenite for n-pentane isomerization

Cited by 52 publications

References 1 publication

Butane Isomerization as a Diagnostic Tool in the Rational Design of Solid Acid Catalysts

Butane Isomerization as a Diagnostic Tool in the Rational Design of Solid Acid Catalysts

The Chemistry of Catalytic Processes

Isomerization

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