ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Adsorption performance of CeO₂@NS-HNbMoO₆ for ethyl mercaptan in methane gas

Lifang Hu, Xianyun Zheng, Jichao Zhu, and Jie He

School of Chemical Engineering, Anhui University of Science and Technology, Huainan, China

E-mail: hulf@aust.edu.cn

Received: 24 September 2021  Accepted: 28 December 2021

Abstract:

Adsorption technology is an effective method to remove trace impurities sulfide in methane gas. Hydrogen bonding and metal–sulfur (M–S) coordination are important adsorption models. The CeO₂@NS-HNbMoO₆ composites are synthesized using the cerium species and the HNbMoO₆ nanosheet with the abundant surface hydroxyl as the load and carrier. The properties of as-prepared samples are characterized by XRD, HRTEM, SEM, EDS, Raman, and XPS. It is found that CeO₂ nanoparticles are evenly dispersed on the surface of NS-HNbMoO₆, and the interaction between CeO₂ and NS-HNbMoO₆ is obvious. Results shows that the adsorption capacity of CeO₂@NS-HNbMoO₆ is 107.19 μmol g⁻¹ which is significantly better than that of the NS–HNbMoO₆ due to the combination of hydrogen bonding and Ce–S interaction. Hydrogen bond and M–S interaction have synergistic promoting effect on adsorption desulfurization.

Keywords: Adsorption; Hydrogen bonding; M-S interaction; Ethyl mercaptan; Methane gas

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-02057-0

Chemical Papers 76 (4) 2495–2504 (2022)