Untitled

保, 三好; 佳人, 坊木; 成紀, 棚田

doi:10.1539/joh1959.19.87

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Activated carbon with a high surface area can achieve 0.1%-0.39% of ammonia gravimetric density below 100 Pa which is far from the densities of halides. Studies have proved that the reaction between carbon surface and ammonia is pure physisorption and plays via van der Waals forces, with exothermic reactions [30].…”

Section: Porous and Proton-based Materialsmentioning

confidence: 99%

Nanomaterials enhancing the solid-state storage and decomposition of ammonia

Mateti¹,

Saranya²,

Sathikumar³

et al. 2022

Nanotechnology

View full text Add to dashboard Cite

Hydrogen is ideal for producing carbon-free and clean-green energy with which to save the world from climate change. Proton exchange membrane fuel cells use to hydrogen to produce 100% clean energy, with water the only by-product. Apart from generating electricity, hydrogen plays a crucial role in hydrogen-powered vehicles. Unfortunately, the practical uses of hydrogen energy face many technical and safety barriers. Research into hydrogen generation and storage and reversibility transportation are still in its very early stages. Ammonia (NH3) has several attractive attributes, with a high gravimetric hydrogen density of 17.8 wt.% and theoretical hydrogen conversion efficiency of 89.3%. Ammonia storage and transport are well-established technologies, making the decomposition of ammonia to hydrogen the safest and most carbon-free option for using hydrogen in various real-time applications. However, several key challenges must be addressed to ensure its feasibility. Current ammonia decomposition technologies require high temperatures, pressures and non-recyclable catalysts, and a sustainable decomposition mechanism is urgently needed. This review article comprehensively summarises current knowledge about and challenges facing solid-state storage of ammonia and decomposition. It provides potential strategic solutions for developing a scalable process with which to produce clean hydrogen by eliminating possible economic and technical barriers.

show abstract

Section: Porous and Proton-based Materialsmentioning

confidence: 99%

Nanomaterials enhancing the solid-state storage and decomposition of ammonia

Mateti¹,

Saranya²,

Sathikumar³

et al. 2022

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…[10][11][12][13][14] For example, zeolite, which is crystalline aluminosilicates minerals characterized by cage-like structure with high internal and surface areas, is well known to adsorb NH 3 . 15,16 It is also useful as an efficient adsorbent to capture heavy metal cations from aqueous solution like HAp. 17 According to these phenomena, HAp/zeolite composite (HZc) may become a potent adsorbent to simultaneous removal of unpleasant odorants because HZc may have advantageous characteristics of both HAp and zeolite.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Modification of Hydroxyapatite/Zeolite Composite on Malodors Adsorption Behavior

Nishida

Kanno

Kimata

et al. 2019

Phosphorus Research Bulletin

View full text Add to dashboard Cite

Hydroxyapatite (HAp)/zeolite composite (HZc) was prepared by a simple immersion method, and it was then modified with Cu 2+ and 3-aminoplopyltriethoxysilane (APES) to produce a novel adsorbent for unpleasant odors such as NH 3 , H 2 S and CH 3 CHO gases. The obtained materials were characterized by SEM-EDS, XRD, FT-IR, TG-DTA and ninhydrin reaction test. Nano-sized order HAp was observed distributed on zeolite for HZc, and modification of HZc with Cu 2+ and APES maintained the original framework structure of HZc. Introduced amount of Cu 2+ and APES after the modification was 3.6 mol% and 12.6 mg·g -1 , respectively. The adsorption ability evaluated via a gas bag-detection tube method showed that Cu 2+ -modified HZc increased NH 3 and H 2 S adsorption ability, and APES-modified HZc enhanced CH 3 CHO adsorption ability in comparison to unmodified one, respectively. Sequential modification of HZc with Cu 2+ and APES also maintained H 2 S and NH 3 adsorption ability, but decreased CH 3 CHO adsorption ability. This suggests that adsorption sites for CH 3 CHO were impeded in case of formation of Cu-N coordinate bond derived from direct interaction between Cu 2+ and amino groups of APES. Therefore, use of HZc individually modified with Cu 2+ and APES is recommended to capture multiple unpleasant odors.

show abstract

Adsorption of various kinds of offensive odor substances on activated carbon and zeolite

Tanada

Boki

1979

Bull. Environ. Contam. Toxicol.

View full text Add to dashboard Cite

Untitled

Cited by 4 publications

References 0 publications

Nanomaterials enhancing the solid-state storage and decomposition of ammonia

Nanomaterials enhancing the solid-state storage and decomposition of ammonia

Effect of Chemical Modification of Hydroxyapatite/Zeolite Composite on Malodors Adsorption Behavior

Adsorption of various kinds of offensive odor substances on activated carbon and zeolite

Contact Info

Product

Resources

About