C1 chemistry, which is the catalytic transformation of C1 molecules including CO, CO2 , CH4 , CH3 OH, and HCOOH, plays an important role in providing energy and chemical supplies while meeting environmental requirements. Zeolites are highly efficient solid catalysts used in the chemical industry. The design and development of zeolite-based mono-, bi-, and multifunctional catalysts has led to a booming application of zeolite-based catalysts to C1 chemistry. Combining the advantages of zeolites and metallic catalytic species has promoted the catalytic production of various hydrocarbons (e.g., methane, light olefins, aromatics, and liquid fuels) and oxygenates (e.g., methanol, dimethyl ether, formic acid, and higher alcohols) from C1 molecules. The key zeolite descriptors that influence catalytic performance, such as framework topologies, nanoconfinement effects, Bronsted acidities, secondary-pore systems, particle sizes, extraframework cations and atoms, hydrophobicity and hydrophilicity, and proximity between acid and metallic sites are discussed to provide a deep understanding of the significance of zeolites to C1 chemistry. An outlook regarding challenges and opportunities for the conversion of C1 resources using zeolite-based catalysts to meet emerging energy and environmental demands is also presented.

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Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities

Exploring the structure of iron-based catalysts on the catalytic performance of Fischer-Tropsch synthesis (FTS) reaction has attracted much attention. With this in mind, the mixture of SiO2 or Al2O3 powder and non-porous iron oxide powder (α-Fe2O3) have been investigated for understanding the nature role of different iron carbides in the FTS reaction by adjusting the formation of iron carbides. Under the typical FTS reaction conditions, the CO conversion of Al2O3/α-Fe2O3 = 1 catalyst could reach up to 61.6 %, which is about 3.3 times that of the pure α-Fe2O3 catalyst. Based on the characterization results, including in situ XPS and CO-DRIFTS as well as Mossbauer spectra, it is found that the electronic state of iron atoms is affected by the existence of SiO2 or Al2O3, and the interactions of Fe-Si or Fe-Al are formed on the surface of iron powder, which plays an important role in formation of C-rich iron carbide active phase (e-Fe2C). Although χ-Fe5C2 is usually as the active phase in the FTS reaction, we have found that the content of e-Fe2C is more positive to activity.

Revealing the activity of different iron carbides for Fischer-Tropsch synthesis

Herein, we explore a facile “defect-mediated outward contraction” strategy to fabricate three-dimensional (3D) hollow-out ZnZrO@C (HO-ZnZrO@C) materials by carbonizing local defect-engineered multi...

Advanced 3D Hollow-Out ZnZrO@C Combined with HierarchicalZeolite for Highly Active and Selective CO Hydrogenation to Aromatics

Among the many biological entities employed in the development of biosensors, enzymes have attracted the most attention. Nanotechnology has been fostering excellent prospects in the development of enzymatic biosensors, since enzyme immobilization onto conductive nanostructures can improve characteristics that are crucial in biosensor transduction, such as surface-to-volume ratio, signal response, selectivity, sensitivity, conductivity, and biocatalytic activity, among others. These and other advantages of nanomaterial-based enzymatic biosensors are discussed in this work via the compilation of several reports on their applications in different industrial segments. To provide detailed insights into the state of the art of this technology, all the relevant concepts around the topic are discussed, including the properties of enzymes, the mechanisms involved in their immobilization, and the application of different enzyme-derived biosensors and nanomaterials. Finally, there is a discussion around the pressing challenges in this technology, which will be useful for guiding the development of future research in the area.

https://www.mdpi.com/2673-3293/2/1/12/pdf

Designing of Nanomaterials-Based Enzymatic Biosensors: Synthesis, Properties, and Applications

Unveiling the roles of Fe-Co interactions over ternary spinel-type ZnCoxFe2-xO4 catalysts for highly efficient CO2 hydrogenation to produce light olefins

Nano-sized ZrO2 derived from metal–organic frameworks and their catalytic performance for aromatic synthesis from syngas

Hierarchically mesoporous iron oxide/graphene oxide (GO) composites have been synthesized by a facile, one-step hydrothermal method and utilized as Fischer–Tropsch synthesis (FTS) catalysts. The ca...

Mesoporous Iron Oxide Nanoparticle-Decorated Graphene Oxide Catalysts for Fischer–Tropsch Synthesis

Nano-ZrO2 as hydrogenation phase in bi-functional catalyst for syngas aromatization

Ru catalysts supported by Si3N4 for Fischer-Tropsch synthesis

A facile green approach to efficiently tune the particle size and dispersion of graphene oxide-supported iron oxide catalysts (Fe/G) through the controlled hydrothermal treatment with the addition ...

Linlin Yan

Papers

Nano-sized ZrO2 derived from metal–organic frameworks and their catalytic performance for aromatic synthesis from syngas

Mesoporous Iron Oxide Nanoparticle-Decorated Graphene Oxide Catalysts for Fischer–Tropsch Synthesis

Nano-ZrO2 as hydrogenation phase in bi-functional catalyst for syngas aromatization

Ru catalysts supported by Si3N4 for Fischer-Tropsch synthesis

Glucose-Induced Monodisperse Iron Oxide/Graphene Oxide Catalysts for Efficient Fischer–Tropsch Synthesis