【摘要】 考察了不同条件下制备的镍取代合成云母-蒙脱石(NiSMM)的结晶情况,并进行了这些合成样品的反应活性评价。结果表明,NiSMM的合成条件远比文献报道的缓和,合成产物不仅有良好的结晶度,而且对正辛烷加氢异构化具有很高的反应活性。更多还原

【Abstract】 Hydrothermal synthesis of nickel-substituted mica-montmorillonite (NiSMM) was carried out in a stainless steel pressure vessel. Sodium silicate, aluminium isopropylate, nickel acetate, fluoride and aqueous ammonia were used as starting materials. The products were detected and identified by X-ray diffraction analysis. The catalytic activity of NiSMM-supported palladium catalyst was evaluated for the hydroisomeriza-tion of n-octane. The results showed that the synthesis of NiSMM could be performed under 40kg/cm2 and 250℃, it presented a striking contrast to the synthetic conditions (87kg/cm2 and 300 ℃) reported in literature. And the crystallization time was also greatly shortened. The synthetic product was of good crystallinity, and Pd-NiSMM showed fairly high catalytic activity thereby.更多还原