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UID:0-1177@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20250825T133000

DTEND;TZID=Asia/Jerusalem:20250825T143000

DTSTAMP:20250813T093808Z

URL:https://aerospace.technion.ac.il/events/hydrogen-generation-from-water
 -and-aluminum-with-different-additives/

SUMMARY:Hydrogen Generation from Aluminum - Water Reaction Using Powder &am
 p\; Tablets with Different Additives
DESCRIPTION:Lecturer:Elinor Kostjukovsky \n Faculty:The Stephen B. Klein Fa
 culty of Aerospace Engineering at the Technion \n Institute:Technion – I
 srael Institute of Technology\n Location:Classroom 165\, ground floor\, Li
 brary\, Aerospace Eng.\n Zoom: https://technion.zoom.us/j/93549691766\n Ab
 stract: \n\n\nHydrogen is one of the most environmentally friendly alterna
 tive fuels\, releasing only water or water vapor upon oxidation and offeri
 ng high energy density. However\, storage and transport challenges limit i
 ts widespread use. A promising solution is on-demand hydrogen generation v
 ia the reaction between aluminum and water:\nAl+3H_2 O→Al(OH)_3+3/2 H_2\
 nThis reaction is hindered under normal conditions due to a passivating ox
 ide layer on aluminum. In previous research\, a patented thermal-chemical 
 method from the Fine Rocket Propulsion Center consisting of depositing 2.5
 % LiH on the aluminum surfaces\, was used to activate the aluminum and ove
 rcome the oxide barrier.\nThe objective of this study was to see the role 
 of LiH and other less expensive and readily available catalyzing additives
  (e.g.\, Ca(OH)2 and NaOH) in the reaction by mixing with the aluminum par
 ticles without the activation by deposition process. The significance of p
 H and molar concentration in facilitating the aluminum-water reaction was 
 investigated. A parametric study varying the reaction temperature and wate
 r-to-aluminum ratio was conducted for the different catalyzing ingredients
 . Through these experiments\, we sought identifying the optimal conditions
  for maximizing hydrogen yield and improving reaction efficiency. In addit
 ion\, the use of tablets of the same compositions was studied for better f
 eeding control. We believe that the small amount of the catalyst reacts wi
 th the oxide layer\, which then exposes the aluminum to react with water e
 nabling efficiencies close to 100% at appropriate conditions.\n\nElinor Ko
 stjukovsky is in Silon program\, an accelerated academic-military program 
 in which we complete both our bachelor’s and master’s degrees within f
 ive years before entering military service. She completed her bachelor's d
 egree with honors in October 2024 in aerospace engineering and currently p
 ursuing my master’s degree under the supervision of Professor Alon Gany.
 \nHer research focuses on on-demand hydrogen generation from aluminum and 
 water.\n\n\n\n Details: \n 
CATEGORIES:Seminars,סמינרים
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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