croyant que je voulais mettre en pratique...
c'est le principal composant du soleil...
.Mitsui Chemical Inc. of Japan has decided to begin construction of a pilot plant for continued development of producing methanol from industrial CO2 effluent and photocatalyst produced hydrogen
This process uses a highly efficient thin film, anatase titania photocatalyst that has a photon to current quantum efficiency of 60%.
Here Mitsui participated and took the research further with proprietary ultra high activity catalysts. This base research was in zinc oxide and copper catalysts that are upgraded to yield 44% efficiency for methane and 24% for ethylene from 82% of the carbon dioxide feed. This published rate does not deactivate the catalysts when operating in a pulsed bias.
The 82% CO2 used number is just outstanding. This is a much better concept than the US effort to somehow sequester and bury CO2. A few months ago the U.S. dropped a coal plant sequestration effort as it was simply too expensive. It is much smarter to make use of the value in the waste CO2 than try to make another kind of “landfill” for CO2. CO2 actually has value, as any green plant can tell you, and when processed up to a value added product it can stop being a sujet of such contention.
Utah State University (USU) biochemists Zhi-Yong Yang and Lance Seefeldt, along with colleague Dennis Dean of Virginia Tech, discovered a molybdenum nitrogenase enzyme capable of converting carbon monoxide into usable hydrocarbons and may lead to motor fuel molecules.
dedeleco a écrit :En chimie, il existe une armada de réactions qui dégagent de l'hydrogène,
dedeleco a écrit :Il faut voir le rendement énergétique global et la facilité de l'ensemble de près.
More promising for a future refining of fuels for the motorized traffic is the production of methanol
out of carbon dioxide (CO2) and hydrogen (H): CO2 + 3 H2 ──> 3H-C-OH + H2O.
This is an exothermic reaction, so that the generated heat can be further used in the process of
low-pressure synthesis.
The production of methanol from carbon dioxide and hydrogen appears as an environmentally re-
levant method, because thereby is consumed a part of the harmful CO2.
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