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- W2384198775 abstract "Urea as the precipitating agent and SDS as the template, mesoporous Al_2O_3Y was prepared by homogeneous precipitation method. Phosphotungstic acid (HPW) was supported on the mesoporous Al_2O_3Y by impregnation method and Al_2O_3Y/HPW was characterized by SEM, XRD, FT-IR, N_2 adsorption. Al_2O_3, mesoporous Al_2O_3 Y and Al_2O_3 Y/HPW were used as the catalysts for synthesis of heptadecenyimidazoline. The results showed that the as-prepared mesoporous Al_2O_3Y existed in amorphous phase, with grain size of (1-5) μm, average pore size of 5.08 nm, most probable pore size of 2.25 nm and surface area of 627.43 m~2·g~(-1). Phosphotungstic acid loading rate was 93.3% with good thermal stability. In the heptadeceny-imidazoline synthesis experiments, with dosage of the catalyst equivalent to 1% of mass of the reactants, 30% higher yield (up to 98.2%) than alumina was attained under shorter reaction time and lower reaction temperature." @default.
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- W2384198775 date "2010-01-01" @default.
- W2384198775 modified "2023-09-23" @default.
- W2384198775 title "Preparation of mesoporous Al_2O_3Y-supported HPW and their catalytic behaviors" @default.
- W2384198775 hasPublicationYear "2010" @default.
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