Fossil fuels hydrogen production

Kermode, R.I., Hydrogen from fossil fuels, in Hydrogen Its Technology and Implications, Section 3.2.2, Chapter 3, Vol. 1—Hydrogen Production Technology, eds., K.E. Cox, and K.D. Williamson, CRC Press, Cleveland, OH, 1977. 

Some but not all of the C02 is emitted in concentrated streams at elevated pressure. At an intermediate step in the production of hydrogen from fossil fuels, there is a mixture of C02 and H2 under pressure, together with impurities. At this stage, there are two options ... 

At the present time, global crude hydrogen production relies almost exclusively on processes that extract hydrogen from fossil fuel feedstock (see Figure 7-1). It is not current practice to capture and store the by-product C02 that results... 

Carbon-free Production of Hydrogen from Fossil Fuels, Global Climate and Energy Project, Stanford University, Stanford, CA, April 2004. 

These unit operations add weight and volume, and reduce the efficiency of the system (fuel processor efficiencies typically range from 75 to 90 percent, but similar losses occur in the production of hydrogen from fossil fuels). In addition to the unit operations however, it is important to realize that their presence also impacts the size, performance, and cost of the fuel cell stack ... 

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