Proton conducting membrane
AssigneeProtia, LLC
InventorsChristian Kjølseth, Per Christian Vestre
Life of this patent
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Abstract
A reactor comprising a first zone comprising a dehydrogenation catalyst and a second zone separated from said first zone by a proton conducting membrane comprising a mixed metal oxide of formula (I) LnaWbO12−y wherein Ln is Y or an element numbered 57 to 71; the molar ratio of a:b is 4.8 to 6, preferably 5.3 to 6; and y is a number such that formula (I) is uncharged, e.g. y is 0≦y≦1.8.
Claims18
A proton conducting membrane comprising a dehydrogenation catalyst and at least one mixed metal oxide of formula (II)
- LnaWb−cMocO12−y (II)
- wherein Ln is Y or an element numbered 57 to 71;
- the molar ratio of a:b is 4.8 to 6;
- c is 0 to (0.5×b);
- and
- y is a number such that formula (II) is uncharged.
A membrane comprising a dehydrogenation catalyst and at least one mixed metal oxide, wherein said mixed metal oxide is of formula (I)
- LnaWbO12−y (I)
- wherein Ln is Y or an element numbered 57 to 71;
- the molar ratio of a:b is 4.8 to 6;
- and
- y is a number such that formula (I) is uncharged.
A membrane comprising a dehydrogenation catalyst and at least one mixed metal oxide, wherein the mixed metal oxide is of formula (III):
- LnxWO12−y′ (III)
- wherein Ln is Y or an element numbered 57 to 71 of the periodic table;
- x is 4.8 to 6;
- and
- y′ is 0≦y′≦1.8.
A supported proton conducting membrane comprising a porous support and a non porous proton conducting membrane thereon;
- wherein said non porous proton conducting membrane comprises a mixed metal oxide of formula (II)
- LnaWb−cMocO12−y (II)
- wherein Ln is Y or an element numbered 57 to 71;
- the molar ratio of a:b is 4.8 to 6;
- c is 0 to (0.5×b);
- and
- y is a number such that formula (II) is uncharged;
- and wherein said support comprises a porous mixed metal oxide of formula (II)
- LnaWb−cMocO12−y (II)
- wherein Ln is Y or an element numbered 57 to 71;
- the molar ratio of a:b is 4.8 to 6;
- c is 0 to (0.5×b);
- and
- y is a number such that formula (II) is uncharged.
A reactor comprising a first zone comprising a dehydrogenation catalyst and a second zone separated from said first zone by a proton conducting membrane comprising a mixed metal oxide of formula (II)
- LnaWb−cMocO12−y (II)
- wherein Ln is Y or an element numbered 57 to 71;
- the molar ratio of a:b is 4.8 to 6;
- c is 0 to (0.5×b);
- and
- y is a number such that formula (II) is uncharged.
A process for the formation of a proton conducting membrane comprising a rare-earth tungstate having general formula (II)
- LnaWb−cMocO12−y (II)
- wherein Ln is Y or an element numbered 57 to 71;
- the molar ratio of a:b is 4.8 to 6;
- c is 0 to (0.5×b);
- and
- y is a number such that formula (II) is uncharged, comprising forming a solution of an organometallic compound of Ln and an organometallic compound of W ions and if present Mo ions in an organic solvent,
- forming a membrane on a support by coating said support with said solution;
- drying to remove said organic solvent;
- and
- calcining to form said proton conducting membrane.
Dependencies are inferred from the claim text.