Abstract
Crystallization of aluminophosphate gels prepared using boehmite and phosphoric acid with different di-n-propylamine/Al2O3 ratios was studied. Depending on the di-n-propylamine/Al2O3 ratio, the following intermediate phases can be formed in reaction gels in the course of further crystallization: hydrated aluminophosphate AlPO4·2H2O, the layered phase, and their mixtures. Procedures were suggested for controlling the morphology of the AlPO4-11 molecular sieve, based on variation of the template/Al2O3 ratio in the course of the reaction gel preparation.
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The study was supported by the Russian Science Foundation, project no. 23-73-00119, https://rscf.ru/project/23-73-00119/.
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Agliullin, M.R., Kuvatova, R.Z., Gus’kov, V.Y. et al. Influence of the Template/Al2O3 Ratio in Reaction Aluminophosphate Gels on the Characteristics of Intermediate Phases and AlPO4-11 Molecular Sieves. Pet. Chem. 63, 708–717 (2023). https://doi.org/10.1134/S0965544123060026
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DOI: https://doi.org/10.1134/S0965544123060026