Effect of various surfactants on the stability time of kerosene-boron nanofluids

被引:16
|
作者
Shariatmadar, Fateme Sadat [1 ]
Pakdehi, Shahram Ghanbari [1 ]
机构
[1] Malek Ashtar Univ Technol, Fac Chem & Chem Engn, POB 11365-8486, Tehran, Iran
来源
MICRO & NANO LETTERS | 2016年 / 11卷 / 09期
关键词
petroleum; boron; nanoparticles; particle size; nanofluidics; nanofabrication; surfactants; liquid mixtures; sedimentation; viscosity; slurries; B; surfactant loadings; kerosene-boron slurries; CTAB; Tween; 85; sorbitan oleate; propylene glycol; oleic acid; weight concentration; viscosity properties; weight fractions; sedimentation times; micron size boron particles; nanosized boron particles; long-term suspension; fuel mixtures; nanometre sized particles; liquid fuels; nanotechnology-based fluids; nanofluid fuels; kerosene-boron nanofluids; stability time; surfactants effect; NANOPARTICLES; FUEL; COMBUSTION; ALUMINA; TOLUENE; HEAT;
D O I
10.1049/mnl.2016.0223
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Nanofluid fuels, a new class of nanotechnology-based fluids, are liquid fuels with a stable suspension of nanometre-sized particles. The preparation of fuel mixtures and achieving to a stable and long-term suspension is the key step in nanofluid synthesis. The idea of this work is to suspend nano- and micron-sized boron particles in kerosene, exploring the differences between the complete sedimentation times of particles in fuel at various weight fractions of surfactants and investigating the viscosity of nanofluid at low weight concentration of nanoparticles. Various surfactants including oleic acid, propylene glycol, sorbitan oleate, Tween 85 and CTAB were used to prepare stable kerosene/boron slurries. Suspensions were prepared with varying surfactant loadings of 0.1-2.0% by weight, in steps, for the same particle loading of 0.5 wt%. The results showed that sorbitan oleate was the best surfactant and the optimum weight ratio of boron particle to sorbitan oleate for enhanced stability of nanofluid was determined to be 2. The complete sedimentation time of nanoparticles at the most stable nanofluid was approximate to 57 h. At low temperature and high weight fraction of particles, nanofluids showed similar 67% enhancement in viscosity properties.
引用
收藏
页码:498 / 502
页数:5
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