Transport of hydrogen

The rate of transport of hydrogen across the membrane of area As in units of mol / time is givenby ... 

GL 21] [no reactor] [P 22] A linear increase in conversion with increasing diffusion coefficient was observed [73], This shows that liquid transport of hydrogen to the catalyst has a dominant role. 

The anodic oxidation of molecular hydrogen dissolved in the electrolyte at a Pt electrode consists of several steps the transport of hydrogen... 

DOT. 1994a. Transportation of hydrogen sulfide by pipeline. Department of Transportation. 

Asahi, H. and Ishitsuka, T. Applicability of Line Pipe to Transportation of Hydrogen-Containing Gas, Steel Research Laboratories, Nippon Steel Corporation, Japan. 

Comparison of Exergy Loss during Storage and Transportation of Hydrogen... 

Fig. 14.3 shows schematically how the hydrogen infrastructure options - comprising the whole supply chain of hydrogen from production (central or onsite), via transport and distribution to the (implementation of) refuelling stations - are modelled in MOREHyS. It has to be noted, that from the point of view of model implementation, transport refers to the transportation of hydrogen between different areas, while distribution is defined as the transportation of hydrogen within the... 

The transport of hydrogen from the entry side to the exit side of the membrane can be described by Pick s laws of diffusion. In the steady state, the hydrogen flux is given hy Pick s first law of diffusion ... 

Figure 5.12 Typical cyclic voltammogram at 0.3mV/s of a hydrogenase film adsorbed at a pyrolytic graphite edge electrode immersed in a pH 9.00 hydrogen saturated solution at 45°C (active-inactive interconversion is too slow to be reasonably studied at lower temperatures) and rotating at ISOOrpm. Under these conditions mass transport of hydrogen is not rate limiting.

In the near future, hydrogen gas will undoubtedly play an important role in the energy media for effective use of primary energies. The production of high purity hydrogen gas, and the storage and transport of hydrogen gas are very important for this purpose. 

Figure 24 depicts schematically the concentration profile of dissolved hydrogen in a porous catalyst particle brought about by interaction of diffusive mass transport of hydrogen into the porous catalyst particles and the consumption of hydrogen by anodic oxidation at the inner surface of the catalyst. 

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