Ion selective ceramic membrane
AssigneeHaldor Topsoe A/S
InventorNiels Christiansen
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Abstract
Ion selective ceramic membrane with high proton conductivity, which membrane is formed of lanthanide phosphate being doped with one or more metals Me from Group IIA of the Periodic Table and having a composition: Ln.sub.1-x Me.sub.x PO.sub.4 wherein Ln is lanthanum, cerium, praseodymium, neodymium, samarium, europium and/or gadolinium; and 0<x.ltoreq.0.5.
Claims6
An ion selective ceramic membrane with high proton conductivity formed of lanthanide phosphate with monoazite structure and doped with at least one metal Me of Group IIA of the Periodic Table, and having a composition:
- Ln.sub.1-x Me.sub.x PO.sub.4 wherein Ln is at least one member of the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, europium and gadolinium;
- and
- 0<x.ltoreq.0.5.
In an apparatus for sensing hydrogen or humidity, said apparatus including an ion selective ceramic membrane,
- the improvement wherein said ion selective ceramic membrane is formed of lanthanide phosphate with monoazite structure and doped with at least one metal, Me, from Group IIA of the periodic table, said membrane having a composition
- Ln.sub.1-x Me.sub.x PO.sub.4,
- where
- Ln is selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, europium and gadolinium;
- and
- 0<x.ltoreq.0.5.
Dependencies are inferred from the claim text.