Experimental and Mathematical Investigation of Hydrogen Absorption in LaNi5 and La0.7Ce0.1Ga0.3Ni5 Compounds DOI Creative Commons
Sihem Belkhiria, Abdulrahman Alsawi,

Ibtissem Hraiech

et al.

Metals, Journal Year: 2024, Volume and Issue: 14(9), P. 967 - 967

Published: Aug. 27, 2024

In the present study, hydrogen-absorption properties of LaNi5 and La0.7Ce0.1Ga0.3Ni5 compounds were determined compared. This work is therefore divided into two parts: an experimental part that presents discusses kinetics isotherms hydrogen absorption in at different temperatures (298 K 318 K). addition, temperature variations inside hydride bed determined. second section, compared to a numerical model processed using statistical physics. Following that, thanks perfect agreement between data proposed model, stereographic energetic parameters associated with reaction, such as number atoms per receptor site (n1, n2), densities sites (Nm1, Nm2), half-saturation pressures (P1, P2) energies (ΔE1, ΔE2) for each site, calculated. All these are acquired by making adjustments data. Thermodynamic functions, internal energy Gibbs energy, which regulate process, then identified parameters. For both compounds, all aforementioned discussed relation initial pressure. The results demonstrated hydrogen-storage enhanced more than 30% stored mass when Ce Ga substituted La sites.

Language: Английский

Spatial Effects and Mechanisms of the Digital Economy on Energy Efficiency: Empirical Findings from China DOI Creative Commons

R. Zhang,

Xiaoxiao Wu, Yifei Chen

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(5), P. 1170 - 1170

Published: Feb. 27, 2025

Energy efficiency plays a vital role in the transition towards carbon neutrality. The rapid rise of digital economy as an emerging growth engine raises important questions about its capacity to enhance energy efficiency. Understanding this relationship is essential for advancing sustainable development and minimizing emissions. Using spatial Durbin models, mediation panel threshold paper empirically examines nonlinear impact on utilization efficiency, taking Chinese cities case study areas. This research shows that there U-shaped between characterized by initial suppression followed promotion, while economy’s improvement surrounding inverted relationship, demonstrating promotion suppression. Heterogeneity studies found eastern has significant positive promotional effect central western regions show suppressive effect. Mechanism tests indicated enhances promoting industrial structure upgrading improving green technological progress. However, significantly affected external factors exhibits effects—only when urban levels cross specific values can generate

Language: Английский

Citations

0
Circular economy in biohydrogen: A state-of-the-art review on advances in sustainable production, storage, and transportation DOI
Amit Kumar Sharma, Praveen Kumar Ghodke, Wei‐Hsin Chen

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145305 - 145305

Published: March 1, 2025

Language: Английский

Citations

0
Renewable energies in Morocco: A comprehensive review and analysis of current status, policy framework, and prospective potential DOI Creative Commons
Hamza El Hafdaoui, Ahmed Khallaayoun,

Salah Al-Majeed

et al.

Energy Conversion and Management X, Journal Year: 2025, Volume and Issue: unknown, P. 100967 - 100967

Published: March 1, 2025

Language: Английский

Citations

0
Circular economy and EU’s energy transition: The moderating and transitioning effects of financial structure and circular carbon technology innovation: Evidence from C-Lasso and PSTR approaches. DOI
Khadim Hussain, Jian Zhong, Anwar Khan

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145434 - 145434

Published: April 1, 2025

Language: Английский

Citations

0
Circular Economy for the Energy System as a Leverage for Low-Carbon Transition: Long-Term Analysis of the Case of the South-East Region of France DOI Creative Commons

Carlos Andrade,

Sandrine Selosse

Energies, Journal Year: 2024, Volume and Issue: 17(6), P. 1407 - 1407

Published: March 14, 2024

The circular economy is a decisive strategy for reconciling economic development and the environment. In France, CE was introduced into law in 2015 with objective of closing loop. legislation also delegates energy policy towards French regions by granting them jurisdiction to directly plan energy–climate issues on their territory develop local resources. Thereby, SUD PACA region has redefined its objectives targeted carbon neutrality transition 2050. To study this transition, we developed TIMESPACA optimization model. results show that following perspective system could contribute reducing CO2 emissions 50% final consumption reaching almost free electricity production. obtain greater reductions, regional systems should follow careful design favoring low energy-consuming behavior strategical allocation resources across different sectors. Biomethane be allocated buildings industrial sector, while hydrogen deployed buses freight transport vehicles.

Language: Английский

Citations

2
Experimental and Mathematical Investigation of Hydrogen Absorption in LaNi5 and La0.7Ce0.1Ga0.3Ni5 Compounds DOI Creative Commons
Sihem Belkhiria, Abdulrahman Alsawi,

Ibtissem Hraiech

et al.

Metals, Journal Year: 2024, Volume and Issue: 14(9), P. 967 - 967

Published: Aug. 27, 2024

In the present study, hydrogen-absorption properties of LaNi5 and La0.7Ce0.1Ga0.3Ni5 compounds were determined compared. This work is therefore divided into two parts: an experimental part that presents discusses kinetics isotherms hydrogen absorption in at different temperatures (298 K 318 K). addition, temperature variations inside hydride bed determined. second section, compared to a numerical model processed using statistical physics. Following that, thanks perfect agreement between data proposed model, stereographic energetic parameters associated with reaction, such as number atoms per receptor site (n1, n2), densities sites (Nm1, Nm2), half-saturation pressures (P1, P2) energies (ΔE1, ΔE2) for each site, calculated. All these are acquired by making adjustments data. Thermodynamic functions, internal energy Gibbs energy, which regulate process, then identified parameters. For both compounds, all aforementioned discussed relation initial pressure. The results demonstrated hydrogen-storage enhanced more than 30% stored mass when Ce Ga substituted La sites.

Language: Английский

Citations

0