Issue 17, 2018

Synthesis of vanadium phosphorus oxide catalysts promoted by iron-based ionic liquids and their catalytic performance in selective oxidation of n-butane

Abstract

A series of vanadium phosphorus oxide (VPO) catalysts have been firstly synthesized using iron-based ionic liquids (ILs) as additives for selective oxidation of n-butane to maleic anhydride (MA) in this work. Meanwhile, VPO catalysts doped with inorganic iron salts were also prepared for comparison. The catalytic evaluation presented that iron-based IL modification remarkably enhanced the n-butane conversion and MA yield. A combination of techniques including XRD, Raman, TG, BET, SEM, TEM, XPS and H2-TPR was employed to investigate the intrinsic distinction among these catalysts. The results demonstrated that iron-based ILs notably change the morphology of the VPO catalyst from a plate-like structure into chrysanthemum-shape clusters, leading to a significant increase in the surface area of the catalyst, and largely promote the formation of (VO)2P2O7. All of these were closely associated with the synergistic effect existing between the structure-oriented cations and metal anions in ILs during the preparation of the VPO catalyst. In addition, the differences in the structure and redox properties of the catalysts studied were also discussed and compared with those doped with conventional inorganic salt additives.

Graphical abstract: Synthesis of vanadium phosphorus oxide catalysts promoted by iron-based ionic liquids and their catalytic performance in selective oxidation of n-butane

Article information

Article type
Paper
Submitted
19 May 2018
Accepted
02 Aug 2018
First published
07 Aug 2018

Catal. Sci. Technol., 2018,8, 4515-4525

Synthesis of vanadium phosphorus oxide catalysts promoted by iron-based ionic liquids and their catalytic performance in selective oxidation of n-butane

F. Dai, Z. Li, X. Chen, B. He, R. Liu and S. Zhang, Catal. Sci. Technol., 2018, 8, 4515 DOI: 10.1039/C8CY01023D

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