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      N-doped graphene and TiO 2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH 3

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          Abstract

          A series of N-doped graphene (NG) and TiO 2 supported MnO x –CeO 2 catalysts were prepared by a hydrothermal method. The catalysts with different molar ratios of Mn/Ce (6 : 1, 10 : 1, 15 : 1) were investigated for the low-temperature selective catalytic reduction (SCR) of NO x with NH 3. The synthesized catalysts were characterized by HRTEM, SEM, XRD, BET, XPS, and NH 3-TPD technologies. The characterization results indicated that manganese and cerium oxide particles dispersed on the surface of the TiO 2–NG support uniformly, and that manganese and cerium oxides existed in different valences on the surface of the TiO 2–NG support. At Mn element loading of 8 wt%, MnO x –CeO 2(10 : 1)/TiO 2–1%NG displayed superior activity and improved SO 2 resistance. On the basis of the catalyst characterization, excellent catalytic performance and SO 2 tolerance at low temperature were attributed to the high content of manganese with high oxidation valence, extensive oxidation of NO into NO 2 by CeO 2 and strong NO adsorption capacity, and electron transfer of N-doped graphene.

          Author and article information

          Journal
          Journal of Advanced Ceramics
          Journal of Advanced Ceramics
          Tsinghua University Press (Tsinghua University, Beijing 100084, China )
          2226-4108
          05 September 2018
          : 07
          : 03
          : 197-206 (pp. )
          Affiliations
          [1] aInstitute of Ceramic Science, China Building Material Academy, Beijing, China
          [2] bDepartment of Materials Science and Engineering, Pingxiang College, Jiangxi, China
          [3] cJiangxi Province Building Materials Industry Catalyst and Carrier Engineering Technology Research Center, Jiangxi, China
          Author notes
          * Corresponding author. E-mail: zhaochunlin@ 123456cbmamail.com.cn
          Article
          2226-4108-07-03-197
          10.1007/s40145-018-0271-7
          e931ec37-d7b5-41f1-b9d7-3c6087f7f804
          Copyright @ 2018

          © The Author(s) 2018. This article is published with open access at Springerlink.com

          Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

          History
          : 08 December 2017
          : 18 March 2018
          : 19 March 2018
          Categories
          Research Article

          Materials technology,Materials properties,Materials characterization,Composites,Ceramics
          low-temperature,selective catalytic reduction (SCR),N-doped grapheme (NG),manganese and cerium oxides

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