zeolite Catalyzed - Catalysis

What are Zeolites?

Zeolites are crystalline aluminosilicates composed of silicon, aluminum, oxygen, and sometimes other elements. They have a porous structure that can accommodate a wide variety of cations, such as Na+, K+, Ca2+, and Mg2+. Due to their unique properties, zeolites are extensively used as catalysts in chemical reactions.

Why Use Zeolites in Catalysis?

Zeolites are highly valued in catalysis for several reasons:

Shape Selectivity: Their porous structure allows for selective catalysis based on the size and shape of the reactant molecules.
Thermal Stability: Zeolites can withstand high temperatures, making them suitable for reactions that require elevated conditions.
Ion Exchange: The ability to exchange cations within their structure allows for the fine-tuning of their catalytic properties.
Acidic Sites: The presence of acidic sites makes zeolites effective in catalyzing acid-base reactions.

Types of Reactions Catalyzed by Zeolites

Zeolites are used in a variety of chemical processes, including:

Hydrocracking
Isomerization
Alkylation
Dehydration

How Do Zeolites Work?

The catalytic activity of zeolites is largely due to their structure and composition. The pore size and shape of a zeolite determine which molecules can enter and react within the cavities. Additionally, the acidic sites within the zeolite framework facilitate various chemical transformations.

Applications in Industry

Zeolites are widely used in the petrochemical industry for refining crude oil and in the production of high-octane gasoline. They are also used in environmental catalysis to remove pollutants from industrial emissions and in biomass conversion to produce biofuels.

Challenges and Future Directions

While zeolites offer numerous advantages, they also face challenges such as deactivation due to coking and the need for regeneration. Research is ongoing to develop more robust zeolite catalysts with enhanced stability and to explore new applications in emerging fields such as green chemistry and renewable energy.

Relevant Publications

Confined Ionic Environments Tailoring the Reactivity of Molecules in the Micropores of BEA-Type Zeolite.

Issue Release: 2024

Solvent effect in H-BEA catalyzed cyclohexanol dehydration reaction.

Issue Release: 2024

Kinetic Monte Carlo Analysis Reveals Non-mean-field Active Site Dynamics in Cu-Zeolite-Catalyzed NO Reduction.

Issue Release: 2024

Screening Cu-Zeolites for Methane Activation Using Curriculum-Based Training.

Issue Release: 2024

An alternative catalytic cycle for selective methane oxidation to methanol with Cu clusters in zeolites.

Issue Release: 2024

Coupled conversion of polyethylene and carbon dioxide catalyzed by a zeolite-metal oxide system.

Issue Release: 2024

Selectivity descriptors of the catalytic -hexane cracking process over 10-membered ring zeolites.

Issue Release: 2024

Selectivity Descriptors of Methanol-to-Aromatics Process over 3-Dimensional Zeolites.

Issue Release: 2024

Tracking the Impact of Koch-Carbonylated Organics During the Zeolite ZSM-5 Catalyzed Methanol-to-Hydrocarbons Process.

Issue Release: 2024

Review and perspectives on TS-1 catalyzed propylene epoxidation.

Issue Release: 2024

Acid-Base Cascades in Zeotype Single Crystal for Sugar Conversion.

Issue Release: 2024

Elucidating the deactivation mechanism of beta zeolite catalyzed linear alkylbenzene production with oxygenated organic compound contaminated feedstocks.

Issue Release: 2024

Mechanistic investigation of methanol-to-olefins conversion catalyzed by H-ZSM-5 zeolite: a DFT study.

Issue Release: 2024

Highly Selective Synthesis of Acetic Acid from Hydroxyl-Mediated Oxidation of Methane at Low Temperatures.

Issue Release: 2024

High Reactivity of Dimethyl Ether Activated by Zeolite Ferrierite within a Fer Cage: A Prediction Study.

Issue Release: 2024

Selective production of methylindan and tetralin with xylose or hemicellulose.

Issue Release: 2024

Advancements in nanoparticle-modified zeolites for sustainable water treatment: An interdisciplinary review.

Issue Release: 2024

Synergy between Brønsted Acid Sites and Carbonaceous Deposits during Skeletal 1-Butene Isomerization over Ferrierite.

Issue Release: 2024

Direct Oxidation of Methane to Methanol over Transition-Metal-Free Ferrierite Zeolite Catalysts.

Issue Release: 2024

H-Promoted Benign Coke Strategy for Dimethyl Ether Carbonylation with Long-Term Stability and High Activity.

Issue Release: 2024

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