[Stoves] Re Alexis Belonio article

[Thomas Reed]

Dear Crispin:

There is no such reactant as "O", it is always written "O2" (O is a free 
radical and begins to be important above 3,000C).  Same for hydrogen, 
always H2 below 3000 C. 

The Water gas shift reaction is CO + H2O <==> CO2 + H2. DH(reaction)  ~ 
0, so the reaction is energy neutral and driven by entropy considerations. 

The equilibrium values depend on the temperature, so I use the double 
arrow.  At temperatures above 700 C, the reverse reaction makes CO.  At 
temperatures below 700 C H2 begins to be favored. 

All of this is explained in gory detail in our "Encyclopedia of Biomass 
Thermal Conversion" (at www.woodgas.com).  You may not want to know the 
details, but the above outlines the facts of life in the hydrogen lane. 

Yours truly,

TOM REED       CHIEF CHEMIST, BEF
------------------------------------------------------------------------

Crispin Pemberton-Pigott wrote:
> Dear Penn
>
> Do you know the temperature at which might take place?
>
>   
>> 2 CO + H2O + O --> 2 CO2 + 2 H
>>     
>
> Thanks
> Crispin
>
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