Natural weathering of styrene–butadiene modified bitumen

Masson, J-F.; Collins, Peter; Woods, John R.; Bundalo-Perc, S.; Al-Qadi, Imad L.

doi:10.1533/9780857093721.2.298

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…In the case presented in Figure , it seems that the addition of commercial antifoulant 2 induces a glass transition that is not observed for the other antifoulant or when the sample is heated alone. The modification of glass transitions by an additive has been observed for other similar systems, such as asphalts …”

Section: Resultsmentioning

confidence: 74%

“…The modification of glass transitions by an additive has been observed for other similar systems, such as asphalts. 40 The number of particles and the mean size (μm) were measured for all three determinations shown previously (Figure 6), and the results are shown in Figures 7 and 8, respectively. It is important to point out that these measurements are semi- a Concentration of 100 ppm of the commercial antifoulant.…”

Section: Energy and Fuelsmentioning

confidence: 71%

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Method for Determining the Effectiveness of Asphaltene Antifoulants at High Temperature: Application to Residue Hydroprocessing and Comparison to the Thermal Fouling Test

et al. 2015

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Using a new on-column filtration technique, the effectiveness of asphaltene antifoulants was determined by measuring the percentage of reduction of asphaltenes at process and near process conditions (up to 200°C such as heat exchangers). This methodology uses conventional HighPressure Liquid Chromatography apparatus (HPLC), is fast (<50min), uses a small amount of sample (<0.1 g of oil) and has very good repeatability and reproducibility (±7%) than conventional gravimetric methods (±14.5%). Laboratory experiments showed that the on-column filtration method can quantitatively measure asphaltene antifoulant activity by determining the percentage of reduction of asphaltene content versus the case without additives at high temperature. It allows performance of mass balances, is fast, repeatable and has little human intervention. For a hydroprocessed product, a virgin crude oil and three commercial antifoulants, comparisons of the on-column filtration method with the thermal fouling test gave correlations factors in the 0.69-0.99 range. Improved correlations were obtained (R 2 = 0.96-0.99) when the asphaltene contents were measured at near processes conditions (195°C) vs. room temperature (R 2 = 0.69-0.92). These results indicate that, in order to better predict fouling tendencies, measurements of the reduction of asphaltene contents should be carried out at temperatures as close as possible to those used during hydroprocessing.

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Section: Resultsmentioning

confidence: 74%

Section: Energy and Fuelsmentioning

confidence: 71%