IN-SITU INVESTIGATION OF MAGNESIUM ALUMINOPHOSPHATE SYNTHESIS BY SYNCHROTRON X-RAY-POWDER DIFFRACTION

Time-resolved synchrotron X-ray powder diffraction was used to study s ynthesis of magnesium substituted aluminophosphates. Four organic temp late molecules were applied, which resulted in different reaction prod ucts. Triethylamine: MAPO-5 and MAPO-47. Di-n-propylamine: MAPO-39 and MAPO-46. Tripropylamine: MAPO-36. Tetramethylammonium hydroxide: MAPO -20. Some synthesis passed through the formation of precursor phases. A precursor observed in the lower temperature range of the synthesis w as Mg(H2O)(4)[Al(PO3OH)OH](H2O)(2).