Hydrogen permeation through mixed protonic-electronic conducting materials
US6296687A · kind A · utility
13Cited by
21References
7Claims
0Family size
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Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ionic conductor has been developed which exhibits both hydrogen ion conductivity and electronic conductivity. The conductor is a perovskite-type oxide represented by the general formula: ABO.sub.3 where A consists of at least one element selected from the group consisting of Ba, Ca, Mg and Sr and B is Ce.sub.1-x M.sub.x where M is a multivalent dopant metal, preferably Eu or Tb, and x is greater than 0 and less than 1. It is particularly useful in processes in which hydrogen is separated from a hydrogen-containing gas, e.g. in conversion of natural gas, operation of hydrogen fuel cells, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.