Issue 42, 2016, Issue in Progress

Impact of double-solvent impregnation on the Ni dispersion of Ni/SBA-15 catalysts and catalytic performance for the syngas methanation reaction

Abstract

Several nickel-based SBA-15 catalysts with Ni content in range of 3 wt% to 10 wt% were prepared by the “double-solvent” impregnation method and investigated for synthetic natural gas (SNG) production in a continuous flow fixed-bed reactor. Using a double-solvent impregnation method could improve the dispersion of nickel particles, which significantly improved the catalytic activity of the Ni-based catalysts in the syngas methanation reaction. The 10%Ni/SBA-15(D) catalyst achieved the best activity with 100% CO conversion and about 99% CH4 yield at 400 °C, 0.3 MPa and 15 000 mL g−1 h−1. The catalysts were characterized by N2 adsorption–desorption, X-ray diffraction (XRD), transmission electron microscope (TEM), H2-temperature-programmed reduction (H2-TPR), H2 pulse chemisorption, CO-temperature-programmed desorption (CO-TPD) and thermogravimetric (TG). It could be speculated that using the double-solvent impregnation method strengthened the interactions between NiO and the support based on the TPR results. The results of XRD and TG analysis showed that catalyst sintering rather than carbon deposition led to catalyst deactivation in the heat-resistant performance and 100 h stability test.

Graphical abstract: Impact of double-solvent impregnation on the Ni dispersion of Ni/SBA-15 catalysts and catalytic performance for the syngas methanation reaction

Article information

Article type
Paper
Submitted
19 Feb 2016
Accepted
31 Mar 2016
First published
12 Apr 2016

RSC Adv., 2016,6, 35875-35883

Impact of double-solvent impregnation on the Ni dispersion of Ni/SBA-15 catalysts and catalytic performance for the syngas methanation reaction

M. Tao, Z. Xin, X. Meng, Y. Lv and Z. Bian, RSC Adv., 2016, 6, 35875 DOI: 10.1039/C6RA04490E

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