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Citation: Bian Guo-Zhu, Han Bo, Fu Yi-Lu. Sol-gel Method Preparation and Characterization of NiMoO₄ Ultrafine Particle Catalyst[J]. Acta Physico-Chimica Sinica, ;1999, 15(11): 1001-1004. doi: 10.3866/PKU.WHXB19991109 shu

Sol-gel Method Preparation and Characterization of NiMoO₄ Ultrafine Particle Catalyst

1.
Department of Chemical Physics,University of Science and Technology of China,Hefei 230026

Received Date: 10 February 1999
Available Online: 15 November 1999

Ni Mo ultrafine particle samples have been prepared by sol gel method with citric acid as complexant. DTA, BET, XRD and LRS have been employed to characterize the structures of the samples obtained by calcining the Ni-Mo gel at various temperatures. The results show that when the Ni Mo gel is calcined in air at 210 ℃, citric acid reacts violently with O2, it produces a flash heat and results in an aggregation of the Ni-Mo particles. When the gel is calcined in ar n, citric acid is removed mildly and NiMoO4 ultrafine particles are formed. After calcined at 500 ℃, the ultrafine particles grow up with a decrease of BET surface area from 51.5 m2•g-1 to 25.0 m2•g-1.
- Ni-Mo complex oxide,
- Preparation of ultrafine particles,
- Sol-gel method
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Sol-gel Method Preparation and Characterization of NiMoO4 Ultrafine Particle Catalyst

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通讯作者: 陈斌, bchen63@163.com

Sol-gel Method Preparation and Characterization of NiMoO₄ Ultrafine Particle Catalyst