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Functionalized silicate nanoparticle composition, removing and exfoliating asphaltenes with same

  • US 9,683,163 B2
  • Filed: 03/17/2015
  • Issued: 06/20/2017
  • Est. Priority Date: 12/31/2012
  • Status: Active Grant
First Claim
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1. A process for removing an asphaltene particle from a substrate, the process comprising:

  • contacting a silicate nanoparticle with a chemical group to form a functionalized silicate nanoparticle, the chemical group comprising;

    a first portion; and

    a second portion comprising an aromatic moiety, the first portion being directly bonded to the silicate nanoparticle in the functionalized silicate nanoparticle; and

    the second portion comprising a moiety of a guanidine, a guanidinium salt, a biguanidine, a biguanidinium salt, or a sulfonium salt;

    contacting the asphaltene particle with the functionalized silicate nanoparticle, the asphaltene particle being disposed on the substrate;

    interposing the functionalized silicate nanoparticle between the asphaltene particle and the substrate; and

    separating the asphaltene particle from the substrate with the functionalized silicate nanoparticle to remove the asphaltene particle from the substrate.

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