Journal
ENERGY & FUELS
Volume 31, Issue 2, Pages 1850-1857Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.6b02418
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Funding
- National Science and Technology Pillar Program [20140015]
- Qingdao Science and Technology and People's Livelihood Project [14-2-3-69 nsh]
- Integrated and Industrialized Research of the Gasified Grain-Based Residuals [2014BAC31B01]
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To achieve greater performance of a low concentration of sodium dodecyl sulfate (SDS) in methane hydrate formation, SDS solutions were doped with pristine carbon nanotubes (pCNTs) and the oxidized forms (OCNTs). With nanotubes as the predominant accelerant in the mixed promoters, the nucleation stage could be shorten efficiently due to the continuous Brownian motion of more nanoparticles. The mixed promoters exerted more pronounced influence on the methane hydrate growth rate compared to the pure SDS, with the OCNTs-SDS system performing slightly better owing to the high dispersion and stability of the OCNTs in the aqueous SDS solutions. Nevertheless, the promotion effects of highly concentrated pCNTs or OCNTs could be weakened possibly due to the aggregation of nanotubes.
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