Abstract
Titanium silicate-1 (TS-1) was treated with a mixed alkaline of tetrapropyl ammonium hydroxide (TPAOH) and NaOH. It was characterized by XRD, nitrogen physical adsorption, SEM, FT-IR, UV–Vis and ICP-OES, and studied in propylene epoxidation. The mixed alkaline treatment with TPAOH/NaOH solution did not destroy the MFI structure of TS-1. With increasing NaOH concentrations, the relative crystallinity and the framework titanium decreased to some extent while the mesopore volume, mesopore diameter, and extra-framework titanium increased appreciably. When NaOH concentration was 0.0333 mol L−1, the best catalytic performance was obtained.
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Acknowledgements
This study was supported by the National Natural Science Foundation of China (No. 21276183).
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Wang, Y., Li, H., Liu, W. et al. Effect of TS-1 Treatment by Mixed Alkaline on Propylene Epoxidation. Trans. Tianjin Univ. 24, 25–31 (2018). https://doi.org/10.1007/s12209-017-0092-8
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DOI: https://doi.org/10.1007/s12209-017-0092-8