Chemistry · S and p Block Elements
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Commercial hydrogen is obtained from:
- A
coal gas
- B
oil gas
- C
marsh gas
- D
producer gas
In steam-methane reforming, methane(marsh gas) reacts with steam under 3–25 bar pressure (1 bar = 14.5 psi) in the presence of a catalyst to produce hydrogen, carbon monoxide, and a relatively small amount of carbon dioxide. Steam reforming is endothermic—that is, heat must be supplied to the process for the reaction to proceed.
Coal gas is a mixture of gases that is obtained by heating coal in the absence of air. While hydrogen is present in small quantities in coal gas, it is not the primary component and is not typically commercially extracted from coal gas
Oil gas, also known as refinery gas, is a byproduct of the refining process of crude oil. While hydrogen is present in oil gas, it is not typically commercially extracted from oil gas.
In steam-methane reforming, methane (Marsh gas) reacts with steam under 3-25 bar pressure ( 1 bar = 14.5 psi) in the presence of a catalyst to produce hydrogen, carbon monoxide, and a relatively small amount of carbon dioxide. Steam reforming is endothermic – that is, heat must be supplied to the process for the reaction to proceed.
Producer gas is a fuel gas that is produced by the partial combustion of solid fuel, such as coal, wood, or biomass, in the presence of a limited amount of air or oxygen. While Hydrogen is present in producer gas, it is not typically the primary component and is not commercially extracted from producer gas
Tagged under Chemistry · S and p Block Elements · 2015