Ionic conduction and vibrational characteristics of Al3+ modified monoclinic LiZr2(PO4)3

Molybdenum modified Montmonrillonite clay as an efficient catalyst for low temperature NH3‐SCR

“…The basal spacing was enlarged by 0.25 nm after Al-pillaring, which was wider than twice of the diameter of an Al 3+ ion (d = 0.106 nm, Al 3+ tetrahedral 4-coordinated). [30][31][32] These observations confirmed Al species had entered the interlayer space of the Mt clay. The small peak observed at 2⊔ = 9°for Al-PILC could be suggesting a very small fraction of the clay was not pillared.…”

“…For sample Al‐PILC, the (001) peak shifted toward a lower value of 5.08°, corresponding to a d‐value of 1.74 nm, thus, a basal spaces of 0.78 nm. The basal spacing was enlarged by 0.25 nm after Al‐pillaring, which was wider than twice of the diameter of an Al 3+ ion (d = 0.106 nm, Al 3+ tetrahedral 4‐coordinated) . These observations confirmed Al species had entered the interlayer space of the Mt clay.…”

“…The basal spacing increased 0.37 nm for AlZr‐PILC, illustrating the AlZr co‐pillaring was more effective than Al‐pillaring. This was due to the insertion of larger Zr 4+ ions (4‐coordinated, tetrahedral, diameter of 0.146 nm) . Al, Zr and AlZr intercalations was effective in ‘prop open’ the layered structure to achieve higher S BET and more porous structure for effective MnCe dispersion.…”

“…This was due to the insertion of larger Zr 4+ ions (4-coordinated, tetrahedral, diameter of 0.146 nm). [30][31][32] Al, Zr and AlZr intercalations was effective in 'prop open' the layered structure to achieve higher S BET and more porous structure for effective MnCe dispersion. To further quantify catalytic activities, the pseudo-first order rate constant (k, cm 3 ·g −1 ·s −1 ), its normalised value to the S BET (k/s ratio, the rate constant per unit area, when reactions take place at the boundary of the reactants and catalyst) were caculated and showed in Table 3.…”

Temperature and processing effects on lithium ion conductivity of solution‐deposited lithium zirconium phosphate (LiZr2P3O12) thin films

“…9 The ion conductivity of these films also matches some reports for bulk, aluminum-doped LZP at room temperature (~2.5 × 10 −6 S/cm). 11,30 There are two possible contributing factors to the increased ion conductivity of these films. First, the stabilization of the fast ion conducting rhombohedral phase and second, the measurement geometry limiting the number of resistive grain-boundary interfaces that are introduced to the conduction path, resulting in an ion conductivity value that approaches the intrinsic ('bulk') ion conductivity of the material.…”