An Investigation of MnOx and K/MnOx-Based Catalysts on MnO2 and Fe3O4 Supports for the Deep Oxidation of Cyclohexane

Processes, Год журнала: 2025, Номер 13(3), С. 634 - 634

Опубликована: Фев. 24, 2025

K/MnOx catalysts on MnO2 and Fe3O4 supports were synthesized compared for the deep oxidation of cyclohexane. The presence potassium (K) enhanced catalytic activity to with similar composition but without K. Interestingly, lowest loading used in this study (0.63 mmoles/g support) performed better than those higher loadings. K increased water adsorption, decreased extent sintering, inhibited changes crystal phase catalyst support, as evidenced by TGA, XRD, BET surface area analyses. XRD profiles showed mixed phases MnOx FeOx species, EPR results support valence states Fe Mn. activation energies MnOx-supported FeOx-supported approximately 50 kJ/mole 53 kJ/mole, respectively.

Язык: Английский

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Catalytic oxidation of volatile organic compounds by plasma–metal oxide coupling

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116045 - 116045

Опубликована: Март 1, 2025

Язык: Английский

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Biomass-derived green polymers for environmental remediation

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 213 - 265

Опубликована: Янв. 1, 2025

Язык: Английский

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Casuarina seed-packed biofilter for the treatment of gaseous mixture: performance, optimization, synergistic effects, neural model analysis, and kinetics

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116689 - 116689

Опубликована: Апрель 1, 2025

Язык: Английский

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Rapid One-Pot Synthesis of Hyper-Cross-Linked Polymers at Room Temperature for the Efficient Adsorption of VOCs

ACS Applied Polymer Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 2, 2024

Язык: Английский

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Recycling waste textiles for the synthesis of δ-MnO2/C catalysts with full-light conversion to highly photothermal oxidation indoor formaldehyde

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 129891 - 129891

Опубликована: Сен. 1, 2024

Язык: Английский

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Kinetic Study and Catalytic Activity of Cr3+ Catalyst Supported on Calcium Silicate Hydrates for VOC Oxidation

Materials, Год журнала: 2024, Номер 17(14), С. 3489 - 3489

Опубликована: Июль 14, 2024

Volatile organic compounds (VOCs) are pollutants that pose significant health and environmental risks, necessitating effective mitigation strategies. Catalytic oxidation emerges as a viable method for converting VOCs into non-toxic end products. This study focuses on synthesizing catalyst based calcium silicate hydrates with chromium ions in the CaO-SiO2-Cr(NO3)3-H2O system under hydrothermal conditions evaluating its thermal stability catalytic performance. A varying concentrations of (10, 25, 50, 100 mg/g Cr3+) was synthesized unstirred suspensions saturated steam pressure at temperature 220 °C. Isothermal curing durations were 8 h, 16 48 h. Results X-ray diffraction atomic absorption spectroscopy showed synthesis is incorporating up to Cr3+ hydrates. The (50 mg/g) remained stable 550 °C, beyond which chromatite formed. experiments propanol propyl acetate revealed supported enhances oxygen exchange during heterogeneous process. Kinetic calculations indicated active, an activation energy lower than 65 kJ/mol. highlights potential Cr3+-intercalated efficient catalysts VOC oxidation.

Язык: Английский

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Three-Dimensionally Printed Mini Air Scrubbing Cartridges Based on Nano-Graphite for Air Pollution Monitoring

Sensors, Год журнала: 2024, Номер 25(1), С. 122 - 122

Опубликована: Дек. 28, 2024

Ecosystems and environments are impacted by atmospheric pollution, which has significant effects on human health climate. For these reasons, devices for developing portable low-cost monitoring systems required to assess exposure during daily life. In the last decade, advancements of 3D printing technology have pushed researchers exploit, in different fields applications, advantages offered, such as rapid prototyping replication complex sample treatment devices. this work, we present fabrication testing printed cartridges based both commercial photopolymer a modified version with intrusion nano graphite. The air scrubbing performances towards some volatile organic compounds been investigated, inserting into system using photoionization sensor. particular, were tested presence concentrations ethanol, benzene, toluene evaluate abatement percentage without their use. Although results shown that all abated ethanol toluene, benzene increased 20 times case resin These could enable employment reduce concentration interfering systems.

Язык: Английский

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Absorption and Recovery of Dichloroethane with a Low Viscosity Absorbent of Multi-Component

Опубликована: Янв. 1, 2024

As a highly volatile and lipid-soluble industrial solvent widely used in production, dichloroethane easily causes pollution human health damage, which is attracting increasing attention. In the present study, six common oils (three vegetable three mineral oils) 11 organic were to prepare absorbents. The absorbent viscosity, absorption ability, dynamic effect, reusability evaluated. prepared absorbents showed good abilities, i.e., low partition coefficient, saturated capacities of colza, soybean, peanut oil-based equaled 113.26–164.06, 113.21–160.89, 78.99–147.82 mg/g, respectively. Besides, viscosity decreased obviously after preparation, conducive gas-liquid mass transfer. Especially, addition ethyl hexanoate dioctyl adipate favored both reduction absorption. With 10 min heating at ~90 °C, model could be efficiently recycled lost <25% its initial capacity cycles.

Язык: Английский

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The Novelty Non-Thermal Plasma-Enhanced Uv-Led Light for the Degradation of Toluene: Effects, By-Products and Mechanism

Опубликована: Янв. 1, 2024

Язык: Английский

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