The Synthesis of NiY Zeolite via the Acid Hydrolysis of Ethyl Silicate and Its Catalytic Performance in the Degradation of Benzyl Phenyl Ethers

Inorganics, Journal Year: 2025, Volume and Issue: 13(3), P. 89 - 89

Published: March 17, 2025

The siliceous precursor was hydrolyzed from tetraethylorthosilicate (TEOS) under acidic conditions, followed by the addition of sodium aluminate and hydroxide. Y zeolite subsequently obtained through hydrothermal crystallization alkaline conditions. Key synthesis parameters, including reactant molar ratios, temperature, time, were systematically varied to optimize synthesized products characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption analysis, inductively coupled plasma (ICP) elemental analysis. Well-crystallized with a silica-alumina ratio (SAR) 5.55 successfully via TEOS hydrolysis catalyzed sulfuric acid at low temperature 85 °C. catalytic performance benzyl phenyl ether, lignin model compound, over NiY catalyst evaluated in high-pressure reactor. results indicate that efficiency as silicon source conditions is significantly superior prepared silica sol source.

Language: Английский

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Highly efficient oxidation of methane into methanol over Ni-promoted Cu/ZSM-5

RSC Advances, Journal Year: 2025, Volume and Issue: 15(11), P. 8244 - 8252

Published: Jan. 1, 2025

Ni-Promoted Cu/ZSM-5 catalyst presented an excellent methanol yield of 82 162 μmol g cat −1 h (with a selectivity ∼74%) in direct conversion methane to methanol.

Language: Английский

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Packed-Bed Pyrolysis of Alkali Lignin for Value-Added Products

Recycling, Journal Year: 2025, Volume and Issue: 10(2), P. 66 - 66

Published: April 9, 2025

Lignin is the largest renewable source of aromatic biopolymers on Earth, and it commercially available as by-product biorefineries pulp/paper industries. It mainly burned for heat power, but pyrolysis can provide high-value-added products. In this study, characteristics alkali lignin pellets are investigated using a packed-bed reactor at laboratory scale heating temperatures 800–900 K. Conversion dynamics analyzed by means thermal field rates gaseous species release, which very innovative aspect study. The yields lumped product classes do not vary significantly in range examined (biochar around 58–63 wt%, together with gas liquid 9–12 28–30 respectively). Carbon dioxide most abundant product, followed methane carbon monoxide (smaller amounts C2 hydrocarbons hydrogen), while bio-oil rich phenolic compounds, especially guaiacols, cresols, phenol. A comparison conversion fir, beech, straw reveals that, consequence softening melting, heat- mass-transfer well actual reaction profoundly different. fact, characteristic process size becomes diameter rather than that pellets.

Language: Английский

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Preparation of metal-modified carbon-based catalyst and experimental study on catalytic pyrolysis of distillers dried grains with solubles

Journal of Analytical and Applied Pyrolysis, Journal Year: 2024, Volume and Issue: unknown, P. 106771 - 106771

Published: Sept. 1, 2024

Language: Английский

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Catalytic pyrolysis of hydrolyzed lignin using HZSM-5/MCM-41 supported transition-metal to produce monocyclic aromatic hydrocarbons

Journal of Analytical and Applied Pyrolysis, Journal Year: 2024, Volume and Issue: 183, P. 106819 - 106819

Published: Oct. 1, 2024

Language: Английский

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HZSM-5 supported with N-doped Fe for microwave catalytic pyrolysis of lignin

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 500, P. 156809 - 156809

Published: Oct. 24, 2024

Language: Английский

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