The advantages of ammonia as a hydrogen carrier have led to proposals for on-site hydrogen production through its decomposition. Rapid cold start of ammonia decomposition is crucial for applications such as ammonia-powered vehicles, but conventional heating methods are challenged by the high decomposition temperature of ammonia. In this study, we successfully achieved the rapid cold start of ammonia decomposition using Co nanoparticle catalysts driven by magnetic induction heating, demonstrating excellent catalytic performance and stability. The magnetic induction heating-driven ammonia decomposition system was integrated with a hydrogen fuel cell, proving its ability to achieve the cold start of ammonia decomposition within 10 s, as demonstrated by comparative experiments using 75% H-25% N from a gas cylinder as the control. This study provides a deeper understanding of hysteresis heating catalysis, promoting the practical use of ammonia as a hydrogen carrier for rapid hydrogen production in the energy industry.
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http://dx.doi.org/10.1021/jacs.4c10851 | DOI Listing |
J Hazard Mater
December 2024
Department of Sustainable Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamilnadu, India. Electronic address:
This study explores the integration of ammonium hydroxide with diesel fuel, focusing on enhancing combustion efficiency and reducing emissions. The research addresses the challenge of ammonia's high activation energy during decomposition by introducing a carbon nanotube catalyst, which significantly improves catalytic performance. Additionally, an electrostatic precipitator (ESP) was developed to capture nanoparticles from engine exhaust, preventing their release into the atmosphere.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Sonny Astani Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, California 90089, United States.
In this paper, a concept of integrated CO capture and reverse water-gas shift (ICCrWGS) process was proposed using NH as the H carrier. The CO efficiency and total thermal energy consumption for the conventional rWGS, ICCrWGS using H (H-ICCrWGS) and NH (NH-ICCrWGS), were calculated. ICCrWGS using H and NH was conducted over the thermally stable Ni/CaZr dual-function materials (DFMs).
View Article and Find Full Text PDFJ Environ Manage
December 2024
Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Zhejiang Engineering Research Center of Non-Ferrous Metal Waste Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China. Electronic address:
Ammonia (NH), as a hydrogen energy carrier, is advantageous for mitigating energy consumption and carbon emission; however, the current Haber process for NH synthesis requires harsh conditions with a low conversion rate. To address these challenges, chemical looping ammonia synthesis (CLAS) has been proposed for utilizing aluminum dross (AD)-a hazardous waste containing sufficient active Al and N as a nitrogen carrier-involving carbon conversion without emissions. AD samples were employed to investigate the performance of CLAS, and the evolution of nitrogen carrier.
View Article and Find Full Text PDFJ Comput Chem
January 2025
Department of Chemistry, University of Hawaii, Honolulu, Hawaii, USA.
This computational study focuses on the mechanism of the consecutive decomposition of FOX-7 and compares the results with recent experimental study [J. Phys. Chem.
View Article and Find Full Text PDFAnal Bioanal Chem
December 2024
College of Control Science & Engineering, China University of Petroleum (East China), Qingdao, 266580, P.R. China.
A detection sensor for mid-infrared ammonia (NH) has been developed according to wavelength modulation spectroscopy-tunable diode laser absorption spectroscopy (WMS-TDLAS) technology, which can be applied in the chemical and aquaculture industries. A 9.06 µm quantum cascade laser (QCL) and a 41.
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