Chemical synthesis of SbSn intermetallic compound and its performance in viscosity reducing for emulsion of crude oil
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摘要: 以化学法合成金属间化合物SbSn，采用XRD、DSC和XPS等手段对材料的体相、熔点和表层价电子态进行表征。将SbSn合金粉体负载于金属丝网上，考察在通电情况下两种W/O型原油乳液经循环处理后的黏度变化。结果表明,以Zn粉为还原剂所合成的产物SbSn，粒径分布为500nm~1000nm。随着循环处理时间的延长和电场电压的增大，两种乳液的黏度均明显下降。当电压为10.35V，处理20h后，W(10)/O(90)和W(20)/O(80)分别由原来的9000mPa·s和8500mPa·s下降到6000mPa·s和4500mPa·s。降黏的机理推测为，原油乳状液中的负极性有机物在电流的诱导下与SbSn的表层发生电化学反应。Abstract: SbSn intermetallic compound was synthesized by chemical method; its bulk phase structure, melting point and valence electron state on surface layer were determined by XRD, DSC and XPS. With SbSn powder supported on wire net as carrier, the viscosity variation of two types of crude oil emulsions was investigated through cycled process under electrifying. The SbSn product with Zn powder as reductive agent exhibited a particle size of between 500nm and 1000nm. With the extension of cycled processing time and the increase of electric field voltage, the viscosity of two types of emulsions declined obviously. After 20h processing at 10.35V, the viscosities of W(10)/O(90) and W(20)/O(80) decline from 9000mPa·s to 6000mPa·s and 8500mPa·s to 4500mPa·s, respectively. It was presumed that the viscosity reducing is due to the electrochemical reaction between negative polar organics in emulsion and SbSn surface on the condition of electric current induction.
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Key words:
- chemical synthesis /
- intermetallic compound /
- SbSn /
- emulsion /
- electrochemistry /
- reducing viscosity
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