Ethanol can be made by biomass;
parts of plant that would be thrown away - corn stalks, straw etc, cannot be fermented in normal way as it contains a lot of cellulose, yeast can't convert the cellulose into ethanol, temperature - 35 degrees C with a pH 6.
The sustainability is similar to the normal fermentation, the advantage is you don't have to grow crop specially for producing ethanol.
Ethene can be reacted with steam to produce ethanol
Fermentation is too slow if making ethanol on a large scale.
1)Ethane = hydrocarbon found in crude oil
2) Split to form ethene (C2H4) and hydrogen (ethane - ethene + hydrogen)
3)Ethene will react with steam to make ethanol - (ethene+steam--ethanol)
4)Needs a temperature of 300 degrees Cand pressure of 70atmospheres, phosphoricacid is used as a catalyst.
QUESTIONS
1) Yes; 2) High; 3)Hydrogen gas; 4)High temp and pressure; 5) oil spills; 6)High temp and pressure is carefully controlled; 7) no specific; 8)Yes
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