Method of Operating Hydrogen Pumps with High-Concentration Hydrogen Sulfides



Reference #: 01018

The University of South Carolina is offering licensing opportunities for a method for purifying hydrogen from a hydrogen-containing gas stream that has hydrogen sulfide impurities.

Invention Description:

The subject invention is a method to purify hydrogen in the presence of high concentrations of hydrogen sulfide impurities using a hydrogen pump.

Potential Applications:

Hydrogen purification

Advantages and Benefits:

The invention is simple, requires little power, and has been shown to pump hydrogen to high pressures.


Hydrogen is an important gas for industrial applications and as a fuel for fuel cell devices. Any hydrocarbon fuel that contains sulfur containing impurities (such as diesel, military strategic fuels, and jet fuel) that is used to produce hydrogen will convert the sulfur impurities to hydrogen sulfide. Hydrogen sulfide acts as a poison to fuel cell catalysts and must be removed prior to use in fuel cells or other industrial applications. However, current hydrogen purification methods are energy-intensive processes, require significant excess hydrogen venting, or are expensive to operate.

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date Patent Status
Methods of Purifying a Hydrogen Gas Stream Containing Hydrogen Sulfide Impurities Utility United States 14/481,163 9,806,365 9/9/2014 10/31/2017   Issued
For Information, Contact:
Technology Commercialization
University of South Carolina
Brian Benicewicz
Guoqing Qian
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