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Highly selective production of renewable p-xylene from bio-based2,5-dimethylfuran and ethylene over Al-modified H-Beta zeolites
p-xylene ethylene Al-modified H-Beta zeolites
2023/6/19
Highly selective synthesis of renewable p-xylene (PX) from bio-based 2,5-dimethylfuran (DMF) and ethylene was successfully realized on H-Beta zeolite catalysts with further Al-modifications. The influ...
Post-modification of desilicated MFI zeolites by phosphorous promoter
Desilicated zeolites Acidity tailoring Phosphorous modification Glycerol dehydration
2023/6/19
Developments in microporous zeolites-base catalysts have evidenced the necessity of acidity tailoring in order to meet the exact requirements of specific reactions, which can be achieved by the post-m...
Zeolites are a class of minerals used in everything from industrial catalysts and chemical filters to laundry detergents and cat litter. They are mostly composed of silicon and aluminum — two abundant...
Kaolin, bentonite, and zeolites as feed supplements for animals: health advantages and risks
kaolinite phyllosilicate geophagy
2015/2/5
Feeding kaolin as a supplement to pigs for prevention of diarrheal diseases has been introduced into some farms in the CzechRepublic. Peat was used in the 1990s for a similar purpose; however, most fa...
Methyl Halide to Olefins and Gasoline over Zeolites and SAPO Catalysts: A New Route of MTO and MTG（图）
methyl halide hydrocarbons zeolite SAPO-34 reaction mechanism
2013/10/9
Rational and efficient conversion of methane to more useful higher hydrocarbons is one of the most important topics of natural gas utilization. Although methane activation and its conversion to valuab...
Industrial Outlook on Zeolites and Metal Organic Frameworks（图）
zeolite metal organic framework nanoporous material industrial chemistry nanotechnology catalysis hydrogen storage
2013/10/9
Crystalline nanoporous materials serve numerous pivotal functions in industrial chemistry. They provide crucial features for industrial applications, such as high surface area, uniform porosity, inter...
Calculation of Standard Thermodynamic Potentials for Na-Zeolites with the Use of Linear Programming Problems
Na-Zeolites Standard Thermodynamic Potentials Linear Programming
2013/3/7
Linear programming problems for Na-Al-Si-O-H system have been formulated and solved for calculations of standard enthalpies and Gibbs potentials of zeolites with unknown thermodynamic properties. The ...
A New Protective Polyethylene Based Film Containing Zeolites for the Packaging of Fruits and Vegetables: Film Preparation
Packaging film Polyethylene Zeolite
2009/10/12
To manufacture a polyethylene film containing zeolite particles for the packaging of foods six manufacturing methods were tried: hot pressing, addition of zeolite to molten polyethylene and dissolved ...
Synthesis of Di-t-butyl Polysulfide from Isobutene, Hydrogen Sulfide, and Sulfur (Part 2) Catalytic Behavior of MFI Zeolites
Polysulfide synthesis Zeolite catalyst MFI zeolite Gallium Reaction mechanism
2009/8/4
Synthesis of di-t-butyl polysulfide from isobutene, hydrogen sulfide and sulfur was carried out at 125°C in an autoclave over MFI zeolite catalysts isomorphously framework-substituted with Al, Ga, an...
Adsorption of Hydrocarbons and Formation of Carbocations over Zeolites Studied by IR Spectroscopy
Zeolite catalyst IR Alkene Carbocation Adsorption
2009/8/4
Carbocation species are considered to be important intermediates in the reactions of hydrocarbons over zeolites, and the formation mechanism, as well as the reactivity, has been studied mainly by NMR...
Pretreatment of MFI Type Zeolites with Ethylene to Enhance Their Catalytic Activities for Dehydration of Ethanol
MFI type zeolite Pretreatment Ethylene Dehydration Ethanol
2009/7/28
The effects of the pretreatment of various types of zeolites such as H-ZSM5, H-mordenite, H-beta, HY and gallosilicate with ethylene on their activities for the dehydration of ethanol at low temperat...
Selective Hydroconversion of n-Heptane over Pd-supported Zeolites and Pd-containing Hybrid Catalyst
Hydrocracking Hydroisomerization Heptane catalyst Hydrogen spillover
2009/7/28
Hydroconversion of n-heptane was investigated over Pd-supported H-zeolite and hybrid catalyst consisting of Pd/SiO2 and USY. Highly selective hydrocracking occurred over Pd/ZSM-5 whereas hydroisomeri...
Effect of Micropore Size on Catalyst Deactivation in Vapor Phase Beckmann Rearrangement over Zeolites
Beckmann rearrangement Cyclohexanone oxime Zeolite Caprolactam selectivity
2009/7/27
The vapor phase Beckmann rearrangement of cyclohexanone oxime (CHO) was carried out over TS-1 with an MFI pore structure and SSZ-31 and SSZ-24 with pore sizes larger than that of MFI to elucidate the...
Ammonia Adsorption on Ion Exchanged Y-zeolites as Ammonia Storage Material
Ammonia adsorption Ion exchanged Y-zeolite Ammonia storage IR TPD
2009/7/23
Ammonia adsorption isotherm on ion exchanged Y-zeolites (Na-Y, H-Y, Co-Y, Cu-Y, K-Y, Rb-Y, and Cs-Y) was investigated to asses the potential for use in ammonia separation and storage, by measuring th...
Decolorization of KN-R catalyzed by Fe-containing Y and ZSM-5 zeolites
Catalytic decolorization Anthraquinone dye Fe-containing zeolite Heterogeneous Fenton-like oxidation
2013/12/12
Decolorization of an anthraquinone dye, Reactive Brilliant Blue KN-R by hydrogen peroxide was examined using Fe-containing Y and ZSM-5zeolites as heterogeneous catalysts. Catalysts were prepared by io...