Two-dimensional porous SiO2 nanomesh supported high dispersed Ni nanoparticles for CO methanation

Panpan Li, Mingyuan Zhu, Jianming Dan, Lihua Kang, Linfei Lai, Xiaoyi Cai, Jianshu Zhang, Feng Yu, Zhiqun Tian, Bin Dai

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Two-dimensional (2D) porous SiO2 nanomesh obtained from mixed acid etching of vermiculite (VMT) was successfully used as a catalyst support for CO methanation. Compared with three-dimensional (3D) MCM-41, 2D VMT-SiO2 provided a superior position for implantation of NiO species. Although NiO/VMT-SiO2 has a total loading of 10 wt.% NiO as well as the NiO/MCM-41, the NiO particles on VMT-SiO2 were observed to show a better dispersion as the of 3D MCM-41 channels were easily blocked by large NiO particles. Moreover, on the basis of the H2 temperature-programming reduction results, NiO particles on VMT-SiO2 were more easily reduced than those on MCM-41. These characteristics indicated that NiO/VMT-SiO2 was significantly superior to NiO/MCM-41. The as-obtained NiO/VMT-SiO2 exhibited a CO conversion of 85.9%, CH4 selectivity of 78% at 450 °C, 0.1151 s−1 turn over frequency at 320 °C and a gas hourly space velocity of 20745 ml/g/h. All of which were much better than those measured for NiO/MCM-41. We believed that 2D VMT-SiO2 as a new catalyst support open a prospect application of catalyst.

Original languageEnglish
Pages (from-to)774-780
Number of pages7
JournalChemical Engineering Journal
Volume326
DOIs
StatePublished - 2017

Keywords

  • CO methanation
  • Porous silica nanomesh
  • Two-dimensional materials
  • Vermiculite

Fingerprint

Dive into the research topics of 'Two-dimensional porous SiO2 nanomesh supported high dispersed Ni nanoparticles for CO methanation'. Together they form a unique fingerprint.

Cite this