TEHRAN – Iranian scientists have succeeded in producing hydrogen with a purity of 99.99% by electrolysis.

The high purity hydrogen produced through high pressure electrolysis (HPE) by the Color Pars Co. in Tabriz, the capital of East Azerbaijan Province, can be used in making medicine, ore reduction, fuel cells, coal purification, and green jet fuel, the head of the Color Pars Co. research team, Firouzeh Taqavi, said on Wednesday.
HPE is electrolysis of water by decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) with a compressed hydrogen output of around 120–200 Bar, Taqavi explained.
Hydrogen can be extracted from water without pollution through electrolysis, and hydrogen is one of the best sources of energy and most valuable fuels, which can greatly reduce pollution, she noted.
And electrolysis will become more economical as non-renewable resources dwindle, she added.
Referring to the high flammability of hydrogen gas, Taqavi said, “It burns in the air at a very wide range of concentrations between 4% and 75% by volume and can cause a fire hazard.”
Hydrogen purity or hydrogen quality is a term to describe the lack of impurities in hydrogen as a fuel gas. The purity requirement varies with the application, for example a H2 ICE requires low hydrogen purity were a hydrogen fuel cell requires high hydrogen purity to prevent catalyst poisoning