07-04-2016 дата публикации
Номер: US20160096151A1
A proton conducting ceramic membrane comprising a conducting layer, wherein said conducting layer comprises a mixture of a rare-earth tungstate as herein defined and a mixed metal oxide as herein defined. The invention also relates to a reactor comprising said membrane and the use of said membrane in a dehydrogenation process. 1. A proton conducting ceramic membrane comprising a conducting layer , wherein said conducting layer comprises a mixture of: {'br': None, 'sub': z1', 'z2', 'a', 'b-c', 'c', '12-y, '(LnDp)WM1O\u2003\u2003(I)'}, '(i) a rare-earth tungstate of formula (I)'}whereinLn is Y, an element numbered 57 to 71, or a mixture thereof;Dp is Y or an element numbered 57 to 71 of the periodic table different from Ln;Z1 is 0.5 to 1;Z2 is 0.5 to 0;M1 is a metal selected from the group consisting of Mo, Re, V, Cr, Nb, U and Mn, or a mixture thereof;the molar ratio of a:b is 4.8 to 6;c is 0 to (0.5*b); andy is 0≦y≦1.8 and is a number such that formula (I) is uncharged; and(ii) a mixed metal oxide selected from the group consisting of {'br': None, 'sub': e-d', 'd', '1-f', 'f', '3-x, 'LnM3CrM2O\u2003\u2003(II)'}, '(a) a mixed metal oxide of formula (II)'}whereinLn is Y, an element numbered 57 to 71, or a mixture thereof;M3 is a metal selected from Ca, Sr or Ba;M2 is a metal selected from the group consisting of Al, Ga, Co, Ti, Mg, Mn, Fe, Ni, Y, Sc, Yb and Lu, or a mixture thereof;e is 0.95 to 1;d is 0.4 to 0.01;f is 0 to 0.5; andx is 0≦x≦0.5 and is a number such that formula (II) is uncharged; {'br': None, 'sub': z1', 'z2', 'a', 'b-c', 'c', '12-y, '(LnDp)WM1O\u2003\u2003(III)'}, '(b) a mixed metal oxide of formula (III) different to that of formula (I)'}wherein Ln is Y or an element numbered 57 to 71, or a mixture thereof;Dp is Y or an element numbered 57 to 71 of the periodic table different from Ln;the molar ratio of a:b is 4.8 to 6;Z1 is 0.5 to 1;Z2 is 0.5 to 0; andM1 is a metal selected from the group consisting of Mo, Re, V, Cr, Nb, U and Mn, or a mixture ...
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