Question

industrial preparation of hydrogen​

Answer 1

Explanation:

The most important industrial method for the production of hydrogen is the catalytic steam–hydrocarbon process, in which gaseous or vaporized hydrocarbons are treated with steam at high pressure over a nickel catalyst at 650°–950° C to produce carbon oxides and hydrogen: CnH2n+2 + nH2O → nCO + (2n + 1)H2; CnH2n+2 + 2nH ...

Answer 2

• The most important industrial method for the production of hydrogen is the catalytic steam–hydrocarbon process, in which gaseous or vaporized hydrocarbons are treated with steam at high pressure over a nickel catalyst at 650°–950° C to produce carbon oxides and hydrogen:  

CnH2n+2 + nH2O → nCO + (2n + 1)H2; CnH2n+2 + 2nH2O→ nCO2 + (3n + 1)H2.

      The primary reaction products are processed further in various ways, depending on the desired application of the hydrogen.

• Another important process for hydrogen production is the noncatalytic partial oxidation of hydrocarbons under elevated pressures:

              CnH2n+2 + (n/2)O2→ nCO + (n + 1)H2.

This process requires a feed system for delivering precise rates of fuel and oxygen, burners of special design to give rapid mixing of the reactants, a refractory-lined reactor, and a cooling system to recover heat from the effluent gases.

• The latter process is exothermic (heat producing), in contrast to the endothermic (heat absorbing) steam–hydrocarbon process.