All Questions
14
questions
-5
votes
1
answer
88
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Is it possible to make a reversible "Solid State" Hydrogen fuel cell using Ammonia Borane and Iron Oxide? [closed]
Well, I saw this video about hydrogen reduction, in which pure hydrogen gas is exposed to iron oxide at high temperatures, producing water vapor and leaving pure iron behind.
And as such, I wondered ...
- 101
1
vote
1
answer
401
views
Hydrogen fuel cell purity / concentration
This is a chemistry/technology kind of question. Some PEM fuel cells work with a rated hydrogen purity of 99.99%.
What would happen if the fuel cell stack is supplied with a hydrogen purity/...
- 29
0
votes
1
answer
105
views
Which is more efficient way to generate energy using hydrogen: direct hydrogen combustion or through fuel cell? [closed]
Which is more efficient way to generate energy using hydrogen: direct hydrogen combustion or through fuel cell? Please explain so that even a primary school student can understand.
- 9
1
vote
0
answers
32
views
How to get the right formulas for combustion (rocket chamber) or where to find them? [closed]
I am a space enthusiast and am intrigued mostly by rockets.
I recently found a book HOW to DESIGN, BUILD and TEST SMALL LIQUID-FUEL ROCKET ENGINES and have been fiddling around with rocket engine ...
- 19
0
votes
1
answer
240
views
Typical reaction yield for combustion of hydrogen [closed]
I am writing an essay on the chemistry of rocket fuel, and I was wondering what, if any, would be a commonly accepted value for the actual yield of the reaction between hydrogen, $\ce{H2},$ and oxygen,...
- 13
0
votes
1
answer
343
views
Why does hydrogen burn spontaneously in fuel cell at room temperature?
It's well known that if you mix $\ce{H2}$ and $\ce{O2}$ in ambient conditions, the $\ce{H2}$ will be stable indefinitely, and will only react with $\ce{O2}$ to form water when ignited by a flame. The ...
- 139
-2
votes
2
answers
68
views
Would a hydrogen/oxygen fuel cell be a good choice for energy storage and generation in H2 rich atmospheric environments?
So imagine an atmospheric probe sent to enter the atmosphere of a giant gas planet. There would be no need to store hydrogen since a compressor or an inlet with sufficient dynamic pressure would allow ...
- 1
1
vote
1
answer
247
views
Can we use liquid hydrogen to power a conventional engine? [closed]
Hydrogen has the best fuel efficiency, so if we were to use it in our engines wouldn't their efficiency increase as well.
The engines would require changes and all but would it be plausible to have ...
- 19
0
votes
1
answer
187
views
Can hydrogen alone be used as a fuel? [duplicate]
I have always thought that fuel such as petrol, diesel, etc.. are getting burnt to move the pistons in the car (I am not bringing physics). Why not hydrogen be used as a fuel but I know the incident ...
- 207
1
vote
2
answers
4k
views
Will ammonia react with gasoline mixed with ethanol?
Recently, a few South Koreans invented a car that runs on an 70% ammonia 30% gasoline fuel mix.
Trevor Brown, The AmVeh – an ammonia fueled car from South Korea, June 20, 2013.
In America, we ...
1
vote
1
answer
322
views
Production of hydrogen through the reaction of aluminium metal and sodium hydroxide
If I have a solution of 25% $\ce{NaOH}$, and I simply add a cut-up aluminium can or some aluminium foil, will it react into hydrogen and sodium aluminate?
In principle this reaction should happen, ...
- 1,494
1
vote
2
answers
1k
views
Is it possible to efficiently convert hydrogen to methane?
According to this wikipedia page, hydrogen can combine with the carbon found in carbon steel to form some methane inside the steel, weakening it. Is is possible to convert hydrogen to methane by ...
- 1,494
2
votes
2
answers
790
views
Hydrogen Fuel Cell and Battery
For hydrogen fuel cell to produce electricity, hydrogen will need to be supplied to the anode. To split oxygen and hydrogen from water and obtain hydrogen, we need to use electrolysis. To use ...
- 21
1
vote
1
answer
146
views
Could this be a feasible fuel system?
First off, please forgive me, I am a chemistry novice!
Overall Process
Fuel for the system is distilled water
Split water into Hydrogen and Oxygen (electrolysis or similar process)
Exhaust Oxygen
...
