Nickel phyllosilicate materials were usually prepared by the hydrothermal method under severe conditions with high hydrothermal temperature and long hydrothermal time. In order to obtain Ni-phyllosilicate under mild hydrothermal conditions, a modified hydrothermal method assisted by double accelerators of ammonium fluoride and urea was proposed in this work. The N/F-A₁₀₀-12 catalyst was prepared by the modified hydrothermal method at 100 °C for 12 h with similar Ni content and morphology as N/F-H₂₂₀-48 prepared by the conventional hydrothermal method at 220 °C for 48 h. The improvement derived from that ammonium fluoride accelerated the etching of FDU-12 to form the intermediate of H₄SiO₄, and urea could facilitate the formation of Ni(OH)₂, resulting in the quick formation of Ni-phyllosilicate under mild conditions. N/F-A₁₀₀-12 exhibited high TOF_CO2 (220 °C) value of 3.05 × 10⁻³ s⁻¹ and low activation energy of 96.5 kJ mol⁻¹ for CO₂ methanation due to the small Ni particle size and enhanced CO₂ and H₂ adsorption property. In addition, N/F-A₁₀₀-12 also displayed high long-term stability and anti-sintering property. In all, the modified hydrothermal method was highly efficient to synthesize Ni-phyllosilicate material under mild hydrothermal conditions.

镍页硅酸盐材料通常在水热温度高、水热时间长的恶劣条件下采用水热法制备。为了在温和的水热条件下获得Ni-页硅酸盐，本文提出了一种改进的水热法，在氟化铵和尿素双重促进剂的辅助下。N/FA ₁₀₀ -12 催化剂是通过改进的水热法在 100 °C 下 12 h 制备的，其 Ni 含量和形貌与通过常规水热法在 220 °C 下 48 h 制备的N/FH ₂₂₀ -48相似。源自氟化铵的改进加速了 FDU-12 的蚀刻形成 H ₄ SiO ₄中间体, 尿素可以促进 Ni(OH) ₂的形成，导致在温和条件下快速形成 Ni-页硅酸盐。N/FA ₁₀₀ -12由于小的 Ni 粒径和增强的 CO ₂表现出3.05 × 10 ^-3 s ^{-1 的}高 TOF _CO2 (220 °C) 值和 96.5 kJ mol ^{-1 的}低CO ₂甲烷化活化能和H ₂吸附性能。此外，N/FA ₁₀₀ -12 还表现出较高的长期稳定性和抗烧结性。总之，改进的水热法在温和的水热条件下非常有效地合成镍-页硅酸盐材料。