Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (5): 128-136.doi: 10.19964/j.issn.1006-4990.2022-0501

• Catalytic Materials • Previous Articles     Next Articles

Study on controllable preparation of nickel phyllosilicate nanotubes catalysts and their catalytic performance

LI Tong(), YIN Hongfeng()   

  1. Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China
  • Received:2022-08-23 Online:2023-05-10 Published:2023-05-15

Abstract:

Nickel phyllosilicate nanotubes(Ni-PSNTs) materials with tubular structure were synthesized by hydrothermal method.The effects of hydrothermal reaction temperature,time,pressure,and sodium hydroxide content on the morphology and structure of the materials were investigated.The results showed that the amount of sodium hydroxide,hydrothermal reaction temperature,and reaction time were key factors affecting the formation of Ni-PSNTs,while the hydrothermal reaction pressure had no significant impact on the formation of Ni-PSNTs.The optimal hydrothermal reaction conditions for the synthesis of Ni-PSNTs materials were determined as hydrothermal reaction temperature of 200 ℃,hydrothermal reaction pressure of 2 MPa,n(Ni)∶n(NaOH)=1∶(54~72),and hydrothermal reaction time of 12 h.In addition,the catalytic performance of the Ni-PSNTs catalyst for the methanation of carbon dioxide was investigated.The results showed that the Ni-PSNTs catalyst exhibited excellent catalytic performance and reaction stability for the methanation of carbon dioxide.After 72 h of reaction testing,the catalyst performance did not significantly decrease,nor did nickel nanoparticles agglomerate and sinter.

Key words: nickel phyllosilicate nanotubes, nickel catalysts, controllable synthesis, methanation, sintering

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