Understanding the vanadium−asphaltene nanoaggregate link with silver triflate complexation and GPC ICP-MS analysis - Archive ouverte HAL Access content directly
Journal Articles Energy & Fuels Year : 2020

Understanding the vanadium−asphaltene nanoaggregate link with silver triflate complexation and GPC ICP-MS analysis

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1
Rémi Moulian
  • Function : Author
Zheng Fang
  • Function : Author
Caroline Barrère-Mangote
  • Function : Author
  • PersonId : 1108279
Quan Shi
Pierre Giusti

Abstract

The effect of silver triflate (AgOTf) on the interaction between vanadium and asphaltene nanoaggregates was investigated by gel permeation chromatography inductively coupled plasma high-resolution mass spectrometry (GPC ICP-HR-MS). The results showed that disaggregation of some vanadium compounds linked to asphaltene nanoaggregates occurred when silver triflate was added. Ag+ can partially move some porphyrins from the high-molecular-weight (HMW) region to the low-molecular-weight (LMW) region. It was inferred that the interaction between Ag+ and the porphyrins surroundings led to a decrease in the size of the nanoaggregates (HMW region) and an increase in the “free” V porphyrin compounds (MMW and LMW regions). Asphaltenes from a similar origin, presenting the same vanadium GPC ICP-MS profile, gave different GPC ICP-MS profiles after AgOTf addition, which could be linked to the difference in geochemistry of the samples.
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Dates and versions

hal-03021936 , version 1 (24-11-2020)

Identifiers

  • HAL Id : hal-03021936 , version 1

Cite

Rémi Moulian, Zheng Fang, Germain Vallverdu, Caroline Barrère-Mangote, Quan Shi, et al.. Understanding the vanadium−asphaltene nanoaggregate link with silver triflate complexation and GPC ICP-MS analysis. Energy & Fuels, 2020, 34 (11), pp.13759-13766. ⟨hal-03021936⟩
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