What are the conditions for reducing ZnO to elemental zinc?
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What are the conditions for reducing ZnO to elemental zinc? Can hydrogen be used as a reducing agent, and what is the reduction temperature? Are those the reaction conditions for the reaction ZnO + H2 = Zn + H2O? Temperature, pressure, hydrogen partial pressure? Thank you
This reaction goes against common sense; zinc is more reducible than hydrogen, so this redox reaction is very difficult to carry out. Since no reaction is a perfectly complete one, according to reaction equilibrium, reducing the amount of water present can shift the equilibrium to the right…
At a temperature of 1975 °C, zinc oxide decomposes to produce zinc vapor and oxygen. Elemental carbon can be used to reduce zinc in zinc oxide; a reaction takes place at high temperatures: · ZnO + C → Zn + CO
Replying to question 1# fengdingwen about the S-Zorb device? If that is the case, in actual operation the role of the reducer is not as described in the manual – where ZnO is supposed to undergo a reduction reaction inside the reducer – but rather it is believed that a certain degree of reduction reaction can take place directly within the reactor, and moreover the temperature of the reducer should not be too high.