• Synthesis of well-ordered MCM-41 containing highly-dispersed NiO nanoparticles and efficient catalytic epoxidation of styrene

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      https://www.ias.ac.in/article/fulltext/jcsc/130/06/0062

    • Keywords

       

      NiO/MCM-41; heterogeneous catalysis; styrene; epoxidation.

    • Abstract

       

      Well-ordered MCM-41 materials with different loadings of NiO were prepared combining hydrothermal method using cetyltrimethylammonia bromide as the structure-directing agent in an ammonia aqueous solution with calcination. A series of characterization of the resulting samples revealed that the materialsmaintained ordered mesostructure of MCM-41 after loading NiO and NiO nanoparticles were highly dispersed in the mesoporous wall and on the external surface of MCM-41. Characterization results also unveiled that Ni2+ prefer to enter the pores that formed by silicone gel during the hydrothermal reaction and incorporated into the pore wall and then formed NiO during the calcination process. And the TEM images indicated that smaller size NiO nanoparticles are easier to be formed on the MCM-41 materials. Catalytic results revealed that NiO should be the catalytic active centers for the oxidation of styrene and Ni-based materials showed the efficient catalytic property.

    • Author Affiliations

       

      KAI HUANG1 ZHILI WANG DONGFANG WU

      1. School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing 211189, China
    • Dates

       
  • Journal of Chemical Sciences | News

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