E-SARA Asphaltene Fractions: Nanoaggregate Size and Shape Measurements

Dewi A. Ballard from the University of Leeds published data on the aggregation behavior of asphaltene fractions. The dataset includes small-angle neutron scattering (SANS) measurements of characteristic lengths and power-law exponents for interfacially active and remaining asphaltene nanoaggregates dispersed in deuterated toluene. The study compares results from whole asphaltenes extracted from heavy crude oil and bitumen.

Use Cases

• Modeling asphaltene nanoaggregate structures based on SANS-derived characteristic lengths and power-law exponents.
• Comparing aggregation behavior between interfacially active and remaining asphaltene fractions.
• Analyzing the impact of solvent aromaticity and asphaltene concentration on nanoaggregate size and shape.

Strengths

• Reports specific SANS measurements, including a characteristic length of 28.0 Å for whole asphaltenes.
• Compares distinct sub-fractions, showing a ~100% increase in characteristic length for the interfacially active fraction.
• Data is associated with a published scientific study from a university institution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Leeds

Collection Method

Data gathered via small-angle neutron scattering (SANS) experiments on asphaltene fractions.