Precipitation of Ni and NiO nanoparticle catalysts on zeolite and mesoporous silica by rotary chemical vapor deposition

DOI Web Site 被引用文献4件 参考文献19件
  • ZHANG Jianfeng
    International Advanced Research and Education Organization, Tohoku University Institute for Materials Research, Tohoku University
  • TU Rong
    Institute for Materials Research, Tohoku University
  • GOTO Takashi
    Institute for Materials Research, Tohoku University

抄録

Ni and NiO catalytic nanoparticles were precipitated onto mesoporous silica and zeolite by rotary chemical vapor deposition (RCVD) using NiCp2 as a precursor. The diameter of the nanoparticles precipitated onto zeolite increased from 5 to 50 nm when the oxygen flow rate (RO2) increased from 0 to 0.33 × 10−6 m3 s−1, whereas that of the nanoparticles precipitated onto mesoporous silica was 5 nm, independent of RO2. The nanoparticles could be precipitated inside of the mesoporous silica pores but outside the zeolite pores. The highest H2 production rate in the methanol–steam reforming reaction was 1150 × 10−3 mol kg−1 s−1 at 633 K, which was achieved with a Ni/NiO catalyst on mesoporous silica, and this H2 production rate is almost six times greater than that of the best Ni catalysts reported in literature.

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