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access icon free Preparation of silica-supported nanoFe/Ni alloy and its application in viscosity reduction of heavy oil

  • Author(s): Xueliang Liu 1 ; Zhancun Yang 2 ; Xiaohong Li 1 ; Zhijun Zhang 1 ; Mengyun Zhao 3 ; Changming Su 3
    • View affiliations
    • Affiliations: 1: Key Laboratory of Ministry of Education for Special Functional Materials, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan Province, Kaifeng 475004, People's Republic of China;
      2: Institute of Nano-Structured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450005, People's Republic of China;
      3: Research Institute of Petroleum Exploration and Development, Beijing 100083, People's Republic of China
  • Source: Volume 10, Issue 3, March 2015, p. 167 – 171
    DOI:  10.1049/mnl.2014.0524 , Online ISSN 1750-0443
© The Institution of Engineering and Technology
Received 07/09/2014, Accepted 04/11/2014, Revised 28/10/2014, Published 24/02/2015

Nanozero valent iron and nickel particles of silica composite (SiO2/Fe/Ni) were prepared via sodium borohydride reduction of ferric chloride and nickel chloride mixed solution in the presence of surface-modified silica. The prepared nano-SiO2/Fe/Ni was characterised by transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectrometry and Brunauer–Emmett–Teller specific surface area method. It was found that the SiO2/Fe/Ni, composed of silica with an average size of about 12 nm and zero valent iron and nickel nanoparticles (Fe/Ni) with an average size of several nanometres, exhibited good anti-oxidation stability, dispersity and phase transfer function. The catalytic effect of SiO2/Fe/Ni on the Shengli extra-heavy oil was evaluated at a low temperature and the sulphur content of heavy oil before and after aquathermolysis was analysed by an elemental analyser. Results have revealed that the SiO2/Fe/Ni has good catalytic performance in the aquathermolysis process of heavy oils. In particular, at the condition of mass fraction of 0.5% and reaction temperature of 150°C for 48 h, it could significantly reduce the viscosity of heavy oil from 184 to 42 Pa·s. When compared with the original heavy oil sample the viscosity reduction rate was 77.17%, showing promising potential in the industrial production of heavy crude oils.

Inspec keywords: nanofabrication; nanoparticles; X-ray diffraction; nanocomposites; particle size; iron; particle reinforced composites; Fourier transform infrared spectra; viscosity; catalysis; pyrolysis; transmission electron microscopy; reduction (chemical); silicon compounds; crude oil; nickel

Other keywords: silica-supported nanostructured alloy; ferric chloride-nickel chloride mixed solution; catalytic effect; aquathermolysis; low-temperature condition; surface-modified silica; temperature 150 degC; SiO2-Fe-Ni; viscosity reduction; X-ray diffraction; phase transfer function; Shengli extraheavy oil; Fourier transform infrared spectrometry; silica composite; particle size; elemental analysis; nanozero valent iron particles; Brunauer-Emmett-Teller specific surface area method; antioxidation stability; nickel nanoparticles; transmission electron microscopy; time 48 h; sodium borohydride reduction

Subjects: Viscosity of liquids; diffusive momentum transport; Decomposition reactions (pyrolysis, dissociation, and group ejection); Other methods of nanofabrication; Heterogeneous catalysis at surfaces and other surface reactions; Infrared and Raman spectra and scattering (condensed matter); Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Optical properties of thin films, low-dimensional and nanoscale structures

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