Synthesis of new cobalt aluminophosphate framework by opening a cobalt methylphosphonate layered material

Abstract

A highly stable, cobalt rich, template free Co–AlPO material was prepared by opening the structure of CoMeP under hydrothermal treatment in the presence of aluminium.

Improved Catalytic Transfer Hydrogenation of Biomass-Derived Aldehydes with Metal-Loaded Aluminum Phosphate

“…Additionally, the bands at 632 and 559 cm −1 were assigned to double-ring vibration modes, while the band located at 460 cm −1 could be assigned to the internal T−O bending mode vibration. 23,27,28 Importantly, there were no formation of new bands and no shift in all of these characteristic bands after the introduction of AEM into the APO1.5, 28 indicating that the AEMs were indeed outside the framework, in line with the XRD results. N 2 physisorption measurements on the catalysts showed all typical IV isotherms with H3-type hysteresis loops in the region 0.75 < P/P 0 < 0.95 (Figure S6), indicating mesoporous structures.…”

“…In the FT-IR spectra, both APO1.5 and the AEM-loaded catalysts (Figure S5) had a strong band at around 1106 cm –1 , which is characteristic of an asymmetric P-O-Al stretching vibration, , and bands at 704 and 663 cm –1 assignable to the symmetric stretching and bending mode vibrations of P-O-Al, respectively. Additionally, the bands at 632 and 559 cm –1 were assigned to double-ring vibration modes, while the band located at 460 cm –1 could be assigned to the internal T–O bending mode vibration. ,, Importantly, there were no formation of new bands and no shift in all of these characteristic bands after the introduction of AEM into the APO1.5, indicating that the AEMs were indeed outside the framework, in line with the XRD results.…”

“…In the FT-IR spectra, both APO1.5 and the AEM-loaded catalysts (Figure S5) had a strong band at around 1106 cm −1 , which is characteristic of an asymmetric P-O-Al stretching vibration, 23,27 respectively. Additionally, the bands at 632 and 559 cm −1 were assigned to double-ring vibration modes, while the band located at 460 cm −1 could be assigned to the internal T−O bending mode vibration.…”

SYSU-6, A New 2-D Aluminophosphate Zeolite Layer Precursor

“…The other typical peaks appearing at 637 cm −1 arose from asymmetric stretching vibration of the P–O–Al unit, suggesting that AlPOs material was formed. Accordingly, the UV Raman spectrum (Figure S2) shows a typical aluminophosphate, with bands below 700 cm −1 corresponding to the Al–O–P structural species and a set of peaks in the range of 900–1100 cm −1 originating with the stretching modes of PO 4 [20,21].…”

Catalyst sites and active species in the early stages of MTO conversion over cobalt AlPO-18 followed by IR spectroscopy

“…The families of signals positioned around 1460 cm −1 and 900 cm −1 must be traced to N,N-diisopropylethylamine since they are completely missing in the computed AlPO-18 spectrum. The latter is characterized by two main types of vibrational modes, the asymmetric and symmetric stretching of TO 4 tetrahedra between 1250 cm −1 and 1000 cm −1 (νTO 4 ) and lattice out-ofplane and in-plane bending below 700 cm −1 (δTO 4 ), 54,55 to which the signal at 250 cm −1 must be added. Reasonably it corresponds to the channel ring's breathing mode.…”