Issue 4, 2020

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

Abstract

In the past, H2O2 has been used as an oxidant when Ti-based materials are used as catalysts at ambient conditions. However, H2O2 suffers from high cost and safety concerns. Therefore, replacing H2O2 with O2 has been highly desired. In this study, a Ti-based bi-MOF, MIL-125(Ti)@NH2-MIL-125(Ti) has been synthesized through the internal extended growth of MIL-125(Ti) on NH2-MIL-125(Ti). This Ti-based bi-MOF performed in sequence to synergistically catalyze the oxidative desulfurization (ODS) reaction with O2. In this bi-MOF catalyst, MIL-125(Ti) is partly embedded and well distributed on the surface of NH2-MIL-125(Ti). NH2-MIL-125(Ti) serves as a catalyst for the production of H2O2 from O2/methanol under visible light, while MIL-125(Ti) serves as an ODS catalyst. The ODS over MIL-125(Ti) is the most effective as the in situ generated H2O2 could be used fully, and the consumed H2O2 (ODS reaction) also promotes further H2O2 production through the Le Chatelier's principle. MIL-125(Ti) and NH2-MIL-125(Ti) exist in close proximity in the bi-MOF material, which leads to an increase in the catalytic efficiency by 2.5-fold in comparison to that obtained from their physical mixture.

Graphical abstract: A Ti-based bi-MOF for the tandem reaction of H2O2 generation and catalytic oxidative desulfurization

Supplementary files

Article information

Article type
Paper
Submitted
15 nov 2019
Accepted
05 jan 2020
First published
06 jan 2020

Catal. Sci. Technol., 2020,10, 1015-1022

A Ti-based bi-MOF 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, 10, 1015 DOI: 10.1039/C9CY02318F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements