asteroza + splitting   28

Efficient Generation of H2 by Splitting Water with an Isothermal Redox Cycle
Interesting work showing no temperature swing, only the presence of steam, is the determinant in a redox reaction supporting water/steam cracking for hydrogen production at 1350C which is both lower than expected and avoids thermal cycling the metal oxide catalyst.
water  reaction  cycle  hercynite  isothermal  oxidation  solar  splitting  production  gas  redox  oxide  metal  hydrogen  cracking  reduction  steam  Delicious 
august 2013 by asteroza
Caltech Chemical Engineers Devise New Way to Split Water - Caltech Media Relations
850C 4 step thermochemical complete water splitting for hydrogen gas production, which puts it in the realm of operation with high temperature nuclear reactors.
thermochemical  water  splitting  manganese  oxide  sodium  carbonate  hydrogen  gas  production  chemistry  research  development  850C  Delicious 
august 2012 by asteroza
Scavenging energy waste to turn water into hydrogen fuel, Headlines for March 12, 2010, UW-Madison Engineering
Interesting that they used ultrasonic frequencies to drive the nanofibers. I wonder if that is due to the fiber length being the limiting factor on available driving frequencies?
PZEC  direct  wawter  splitting  piezoelectrochemical  hydrogen  production  electrolysis  zinc  oxide  barium  titanate  nanocrystal  nanofiber  materials  science  research  technology  nanotechnology  green  energy  Delicious 
march 2010 by asteroza
Scavenging energy waste to turn water into hydrogen fuel
Direct harvesting of mechanical energy to split water for hydrogen production via nanofiber piezoelectric output coupling into water. But will it scale, and how pure does the water have to be before the fibers become matted/clogged?
PZEC  piezoelectrochemical  effect  water  splitting  splitter  nanofiber  crystal  piezoelectric  hydrogen  production  green  energy  materials  science  research  technology  nanotechnology  Delicious 
march 2010 by asteroza
Sun-powered water splitter makes hydrogen tirelessly - tech - 11 February 2010 - New Scientist
This could be a big breakthrough in hydrogen production. I wonder if this can be used at moderately higher temperatures (below boiling)?
indium  phosphide  cluster  nanocluster  solar  light  electrolysis  hydrogen  production  materials  science  research  technology  nanotechnology  green  energy  water  splitting  inorganic  Delicious 
february 2010 by asteroza
A Promising Catalyst for Solar-Based Hydrogen Energy Production
I wonder if a small electric charge in the water could substitute for the reagent electron donor that otherwise contaminates the water...
technology  green  energy  power  materials  research  Water  oxygen  carbon  solar  production  hydrogen  electrolysis  polymer  mat  splitting  layered  nitride  Delicious 
february 2009 by asteroza

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