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Ti-based bi-MOFs for the tandem reaction of H2O2 generation and catalytic oxidative desulfurization

Abstract

In the past, the H2O2 are used as oxidant when Ti-based materials as a catalyst at room conditions. But H2O2 suffers for high cost and safety concerns. Replacing H2O2 with O2 has been highly desired. In this work, Ti-based bi-MOFs, MIL-125(Ti)@NH2-MIL-125(Ti) are synthesized through internal extended growth of MIL-125(Ti) on NH2-MIL-125(Ti). This Ti-based bi-MOFs, performed in sequence to synergistically catalysis effects for oxidative desulfurization (ODS) reaction with O2. For this bi-MOFs catalyst, MIL-125(Ti) are embed partly in and well distributed on the surface NH2-MIL-125(Ti). NH2-MIL-125(Ti) serves as a catalyst for the production of H2O2 from O2/methanol under visible light, MIL-125(Ti) is used as a ODS catalyst. The ODS over the MIL-125(Ti) are most effective for the in situ generated H2O2 could been used fully, consumed H2O2 (ODS reaction) also promote the H2O2 production for Le Chatelier's principle. MIL-125(Ti) and NH2-MIL-125(Ti), are in closed proximity on bi-MOFs materials, this leads to the catalytic efficiency is increased by 2.5 times in comparison to their physical mixture.

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Supplementary files

Article information


Submitted
15 Nov 2019
Accepted
05 Jan 2020
First published
06 Jan 2020

Catal. Sci. Technol., 2020, Accepted Manuscript
Article type
Paper

Ti-based bi-MOFs for the tandem reaction of H2O2 generation and catalytic oxidative desulfurization

X. Liao, W. Wei, Y. Zhou, M. Zhang, Y. Cai, H. Liu, Y. Yao, S. Lu and Q. Hao, Catal. Sci. Technol., 2020, Accepted Manuscript , DOI: 10.1039/C9CY02318F

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