Thermochemical conversion and gasification of high-density polyethylene (HDPE) in supercritical CO2: A sustainable approach to plastic waste management

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 512, P. 162343 - 162343

Published: April 8, 2025

Language: Английский

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Transition Copper‐Modified Iron Foam Electrode as a Green and New Method for Electrochemical CO₂ Reduction for the Synthesis of Benzyl 3‐Phenylpropiolate Derivatives Under Electro‐Oxidation Reaction Conditions Using NaCl

Applied Organometallic Chemistry, Journal Year: 2025, Volume and Issue: 39(5)

Published: April 27, 2025

ABSTRACT This research explores the application of electrocatalytic oxidation in reduction CO 2 for synthesis benzyl 3‐phenylpropiolate derivatives, involving phenylacetylene 1(a–e) , carbon dioxide 2a and chloride 3(a–j) under electro‐oxidation reaction conditions with sodium (NaCl), utilizing highly efficient catalysts, specifically graphite rod Cu‐modified Fe foam. NaCl serves as an inexpensive readily available reagent roles electrolyte, cocatalyst, activator copper metal. Phenylpropiolate derivatives are crucial generating a wide range products agricultural chemicals, versatile industrial pharmaceuticals, other industries. The utilization electrocatalysis represents environmentally sustainable eco‐friendly alternative to conventional methods, highlighting its potential impact on organic synthesis. noteworthy efficiency exhibited by foam catalysts emphasizes their role advancing field chemistry. study not only offers promising path towards creation friendly methods synthesizing 5(a–j) using isopropyl alcohol (iPrOH) solvent, time 30 min, counter current 20 mA, all conducted at room temperature atmospheric pressure, yielding high percentages (91%–95%), but also details fabrication confirmation electrodes through SEM, EDS, XRD, XPS, CV analysis. Subsequent characterization synthesized involved CHN analysis, 1 H NMR, melting point determination.

Language: Английский

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Fixation of CO2 as carboxylic acid catalyzed by acetylglucosyl 2-methyl-imidazolium and AuNP-modified polyacrylonitrile fiber

European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 114013 - 114013

Published: May 1, 2025

Language: Английский

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Structural Evolution of Olivine during Mechanochemically-Assisted Mineral Carbonation under CO2 Flow

Published: Aug. 28, 2024

The mechanism of the mechanically assisted mineral carbonation commercial olivine under flow CO2/N2 mixture has been elucidated by ex situ powder X-ray diffraction and Fourier-transform infrared spectroscopy. overall CO2 conversion depends to rotation frequency mill’s engine, reached 85% within 90 minutes mechanical treatment, at a rate 2.5 l min-1. By tuning rotation, kinetics changed from sigmoid behaviour into more complex reaction pathway, involving subsequent steps. structural analyses suggest clinochlore, Mg- Fe- containing aluminosilicate gathered among components olivine, is formed consumed in different stages, thus promoting sequestration that eventually results formation hydrated anhydrous Mg-based carbonates.

Language: Английский

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Influence of Chromium in Cr/Zn-Bea Metal–Zeolite Composites on Their Acid–Base Characteristics and Catalytic Properties in the Processes of Propane Dehydrogenation

Theoretical and Experimental Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Language: Английский

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Use of Periodic Mesoporous Organosilica–Benzene Adsorbent for CO2 Capture to Reduce the Greenhouse Effect

Materials, Journal Year: 2024, Volume and Issue: 17(11), P. 2669 - 2669

Published: June 1, 2024

The CO2 adsorption of a phenylene-bridged ordered mesoporous organosilica (PMO–benzene) was analyzed. maximum capture capacity 638.2 mg·g−1 (0 °C and 34 atm). Approximately 0.43 g would be enough to reduce the amount atmospheric in 1 m3 pre-industrial levels. data were analyzed using several isotherm models, including Langmuir, Freundlich, Sips, Toth, Dubinin–Radushkevich, Temkin models. This study confirmed capability this material for use reversible with minimal loss (around 1%) after 10 cycles. Various techniques employed characterize material. findings from can help mitigate greenhouse effect caused by CO2.

Language: Английский

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Unlocking The Potential of Carbon Transportation: Paving the Way for CCUS Service in the UAE

Published: Nov. 4, 2024

Abstract Carbon Capture, Utilization, and Storage (CCS) technology is one of the most relevant technologies aimed at reducing GHG emissions. It vital for energy sector industry, especially hard-to-abate industries, to decarbonize them. When CO2 utilized, instead stored, overall known as CCUS, where "U" stands utilization; although market utilization small compared produced amount CO2, it adds an attractive alternative storage, allows introduce new or improved products into market. To assess commercial viability CCUS measures incentivize their deployment a service, which can only emerge through adequate policies technical assessments, transportation key enabler. The objective this paper analyze UAE’s potential regional cluster support UAE international net-zero ambitions within tightening environmental regulatory landscape expansion in carbon coverage. strategic location, existing oil gas infrastructure, end-to-end value chain expertise represent competitive advantages. This also focuses on identifying drivers success global service deployment, broadly be classified under four distinct criteria: 1) net impact, 2) economic viability, 3) transportation, 4) social aspects. methodology based primary literature review current advancements by sea, pipeline, & road scenario assessments criteria matrix interviews. A mapping assessment integrated, considering storage potential, risks, options develop optimal logistics solutions. vast capacity hub provide opportunities receive from locations with limited subsurface space. requires appropriate vessel designs mechanisms, such green maritime corridors long distances pipelines transport shorter routes. However, technical, regulatory, financial, logistical challenges must carefully managed addressed ensure safety, compliance, feasibility. Scenario planning highlights importance connectivity well-structured accounting mechanism, fees, robust liability system accelerate establishment. study represents novel determine feasibility (port-storage-final sinks port-to-port) enabler positioning domain, main identified clusters diversification strategies significant implications. Additionally, providers assist clients navigating markets, leveraging credits offsets monetize activities, providing incentives developing complementary like Dioxide Removal (CDR), dioxide feedstock fuel chemical production. Continuous research development are essential improve efficiency cost-effectiveness while ensuring compliance safety standards, public acceptance, regulations.

Language: Английский

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Metal-Organic Framework-derived Base Catalyst for Conversion of Dimethyl Carbonate to Glycerol Carbonate

Applied Catalysis A General, Journal Year: 2024, Volume and Issue: 685, P. 119878 - 119878

Published: Sept. 1, 2024

Language: Английский

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Structural Evolution of Olivine during Mechanochemically Assisted Mineral Carbonation under CO2 Flow

Inorganics, Journal Year: 2024, Volume and Issue: 12(10), P. 269 - 269

Published: Oct. 15, 2024

The mechanism of the mechanically assisted mineral carbonation commercial olivine under flow a carbon dioxide (CO2)/nitrogen (N2) mixture has been elucidated by ex situ powder X-ray diffraction and Fourier-transform infrared spectroscopy. overall CO2 conversion depends on rotational frequency mill’s engine, it reaches 85% within 90 min mechanical treatment at rate 2.5 L min−1. By tuning rotation, kinetics unveil complex reaction pathway involving subsequent steps. Structural analyses suggest that clinochlore, magnesium (Mg-)- iron (Fe-)-containing aluminosilicate gathered among components olivine, is formed consumed in different stages, thus promoting sequestration eventually results formation hydrated anhydrous Mg-based carbonates.

Language: Английский

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An assessment of photochemical carbon dioxide utilisation technologies using real options

Sustainable Energy Technologies and Assessments, Journal Year: 2024, Volume and Issue: 72, P. 103994 - 103994

Published: Oct. 17, 2024

Language: Английский

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