5 Scientific Knowledge and Challenges Related to Hydrogen
89
This type of catalytic reaction is well known and has been long applied in the
oil industry. Among the hydrocarbon compounds identified, other than volatile carbon gases, we also note the presence of heavier hydrocarbons and oxidised organic
compounds (carboxylic acids). Another consequence of the high concentrations of
hydrogen found in fluids is its impact on deep-sea bacterial flora, explaining the
mixture of abiogenic and biogenic molecules synthesised during hydrothermal convection and found in fluids.
Since 1995, seven active high (> 350 °C) or medium (~ 90 °C) temperature sites
have been discovered in the mantle, all producing large quantities of hydrogen
Fig. 5.1 Active high temperature sites discovered and explored to date on the Mid-Atlantic Ridge
( black basalt sites; pink peridotite sites). (From Charlou et al. 2010)
89
This type of catalytic reaction is well known and has been long applied in the
oil industry. Among the hydrocarbon compounds identified, other than volatile carbon gases, we also note the presence of heavier hydrocarbons and oxidised organic
compounds (carboxylic acids). Another consequence of the high concentrations of
hydrogen found in fluids is its impact on deep-sea bacterial flora, explaining the
mixture of abiogenic and biogenic molecules synthesised during hydrothermal convection and found in fluids.
Since 1995, seven active high (> 350 °C) or medium (~ 90 °C) temperature sites
have been discovered in the mantle, all producing large quantities of hydrogen
Fig. 5.1 Active high temperature sites discovered and explored to date on the Mid-Atlantic Ridge
( black basalt sites; pink peridotite sites). (From Charlou et al. 2010)