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- W1574002541 abstract "The synthesis and functionalization of mesoporous zirconium (IV) phosphate-phenylphosphonate have been systematically described as a new non-siliceous mesoporous material. The mesostructure formation and functionalization could be proved through XRD, BET, 31PMASNMR, IR, TEM and TGA characterization methods. The samples prepared have worm-like 3D-connected tubular mesopores, higher surface areas and better thermal stabilities in contrast to the layered analogs. The amount of phenyl groups inside the samples could be adjusted by controlling the molar ratio of the phosphoric and phosphonic acids during the synthesis procedure. Furthermore, the phenyl groups inside the pore channels of samples can be easily functionalized through phenyl substitution reactions to incorporate sulphonate, bromic, nitro groups. After functionalization, the sulphonated and brominated samples still kept the mesostructure but the nitrified sample did not. The results of the NH3 adsorption microcalorimetric and TGA measurements demonstrated that the sulphonated sample had more strong acid sites and higher thermal stability, and consequently possess higher acid catalytic activity for the liquid phase esterification reaction between benzoic acid and methanol." @default.
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- W1574002541 date "2004-01-01" @default.
- W1574002541 modified "2023-10-15" @default.
- W1574002541 title "Synthesis and functionalization of mesoporous zirconium (IV) phosphate-phenylphosphonate with small mesopores" @default.
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- W1574002541 doi "https://doi.org/10.1016/s0167-2991(04)80936-4" @default.
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