Surfactant-Only Stabilized Dispersions of Multiwalled Carbon Nanotubes in High-Electrolyte-Concentration Brines
| Autor: | Jeffrey H. Harwell, Mohannad J. Kadhum, Marissa C. Mercado, Changlong Chen, Benjamin Shiau |
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| Rok vydání: | 2016 |
| Předmět: |
Nanotube
Materials science business.industry General Chemical Engineering Fossil fuel Energy Engineering and Power Technology Nanotechnology 02 engineering and technology Electrolyte 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Catalysis chemistry.chemical_compound Fuel Technology Brine chemistry Pulmonary surfactant Chemical engineering Ionic strength Petroleum 0210 nano-technology business 0105 earth and related environmental sciences |
| Zdroj: | Energy & Fuels. 30:8952-8961 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.6b01389 |
| Popis: | Multiwalled carbon nanotubes (MWNTs) exhibit promising properties for potential applications in oil production. Because of their substantial surface area, they could be used as carriers for catalysts or chemicals into subsurface oil and gas zones to change the properties of reservoir fluids or rock. A prerequisite for utilizing the MWNT in reservoir applications is to generate stable aqueous-phase dispersions that are well-dispersed and able to propagate successfully through the reservoir medium. In this study, different types of surfactants were investigated for their ability to disperse MWNTs in high-ionic-strength solutions typical of oil reservoirs up to 10% American Petroleum Institute (API) brine (8 wt % NaCl and 2 wt % CaCl2). Stable nanotube dispersions in deionized water were achieved with the anionic surfactants evaluated. Compression of the electrical double layer, however, at high ionic strength, e.g., >3 wt % electrolytes, led to rapid aggregation of the anionic surfactant-aided nanotube disp... |
| Databáze: | OpenAIRE |
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