Nano magnesium aluminum layered double hydroxide as a base material for chromatographic 99 MO 99 MTC column generator

Abstract EN

Nano magnesium aluminum layered double hydroxide (Nano MgAl LDH) sorbent, prepared via autocombustion route, was used as a base material for chromatographic 99 Mo / 99 mTc column generator.

the acid-base titration curve proved the amphoteric nature of the prepared MgAl LDH (with a point of zero charge at pH 6.5).

the sorbent, prepared at the optimum conditions, was characterized by IR spectroscopy and XRD.

the Mo (VI) breakthrough capacity was found to be 6.54 × 10-2 mmol Mo (VI) / g, i.e., 6.27 mg Mo (VI) / g.

the prepared 99 Mo / 99 mTc chromatographic column generator showed a good performance.

the 99 mTc elution yield was found to be 75.0% at flow rate of 1 ml / min, pH of the eluate ranged from 5.5 to 7.5, the radionuclidic purity of the eluted 99 mTc was > 99.99% and Al3 + content in the eluate was < 5 ppm.

the peaks that appeared in the XRD pattern resembled those in the XRD pattern of MgAl LDH, Mg6Al2(OH)162 +, and α-Al2O3 phases.

the FT-IR spectrum showed the band at 681 cm-1 which may be attributed to the translational mode of the Al-OH bond being characteristic of LDH’s.

in conclusion Nano magnesium aluminum layered double hydroxide (MgAl LDH) sorbent was well synthesized and characterized and used as a base material for 99 Mo / 99 mTc column generator achieving higher loading capacities than that of alumina.