<html><head></head><body bgcolor="#FFFFFF"><div>Dear Tasliman and all</div><div><br></div><div>You left out </div><div><br></div><div>CO + H2O ==> CO2 + H2. </div><div><br></div><div>Which is the "Watergas Shift" reaction.</div><div><br></div><div>The energy (enthalpy) change is very close to zero. It is favored for entropy reasons below about 700C over an iron or cobalt catalyst. It is a very important reaction, see Wikipedia .</div><div><br></div><div>Tom Reed</div><div><br></div><div><br><br>Dr Thomas B Reed<span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "> </span><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">The Biomass Energy Foundation</span><div><a href="http://www.Woodgas.com">www.Woodgas.com</a></div></div></div><div><br>On Feb 10, 2012, at 12:52 AM, Tasliman <<a href="mailto:emtaz2010@gmail.com">emtaz2010@gmail.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div>
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Dear list<br>
I must write a brief explanation about biomass and coal
gasification. I am confused when I must explain hydrogen production
from gasification. I can understand quite well about biomass
gasification, because biomass contains H in their chains. But I
still have no idea when many authors wrote about producing Hydrogen
from coal.<br>
<br>
AFAIK coal is mainly carbon, but many wrote this reaction,
concerning <b>oxygen gasification</b><br>
<br>
C + O2 --> CO2<br>
C + 1/2 O2 --> CO<br>
H + 1/2 O2 --> H2O<br>
<br>
my question is where does the <b>hydrogen</b> in that reaction come
from if it is not a steam gasification?<br>
Or it should be a steam gasification ?<br>
<br>
Thank you,<br>
Tasliman<br>
<br>
<br>
<br>
<br>
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