Wang, Dehua published the artcileMicroporous Aluminophosphate ULM-6: Synthesis, NMR Assignment, and Its Transformation to AlPO4-14 Molecular Sieve, Category: alcohols-buliding-blocks, the publication is Journal of Physical Chemistry C (2016), 120(22), 11854-11863, database is CAplus.
A pure fluorinated aluminophosphate [Al8P8O32F4·(C3H12N2)2(H2O)2] (ULM-6) was synthesized via an aminothermal strategy, in which triisopropanolamine (TIPA) was used as the solvent together with the addition of propyleneurea and HF. The 13C NMR spectrum demonstrates that 1,3-diaminopropane, the in situ decomposer of propyleneurea, is the real structure-directing agent (SDA) for ULM-6 crystals. The local Al, P, and F environments of the dehydrated ULM-6 were studied by 1-dimensional and 2-dimensional solid-state NMR spectroscopy. The spatial proximities are extracted from 19F{27Al}, 19F{31P}, 27Al{19F}, and 31P{19F} rotational-echo double resonance (REDOR) NMR experiments as well as 19F → 31P heteronuclear correlation (HETCOR) NMR and {31P}27Al HMQC NMR experiments, allowing a full assignment of all the 19F, 27Al, and 31P resonances to the corresponding crystallog. sites. Also, the structure of ULM-6 is closely related to that of AlPO4-14. A combination of high-temperature powder XRD, thermal anal., and 19F NMR reveals that the removal of F atoms at higher temperature is crucial to the phase transformation of ULM-6 to AlPO4-14. The calcined product shows high CO2/CH4 and CO2/N2 selectivity with ratios of 15.5 and 29.1 (101 kPa, 25°), resp.
Journal of Physical Chemistry C published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C38H24F4O4P2, Category: alcohols-buliding-blocks.
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