Wax prediction is crucial because accumulation of wax in the crude oil pipelines is a wide
concern in the petroleum industry. In the subsea pipelines, the cold temperature of the …

Vibrational spectroscopic imaging and mapping approaches have continued in their
development and applications for the analysis of pharmaceutical formulations. Obtaining …

The work demonstrates the great potential of using a vanadyl porphyrin probe to study resin–
paraffin aggregation processes in oils. The dynamics and polarity of the local environment of …

Temperature dependencies of electron paramagnetic resonance spectra of intrinsic
paramagnetic vanadyl complexes and dynamical viscosity for two heavy crude oils and …

We present a detailed study of electron/nuclear interaction in a specific crude oil by
continuous-wave and pulsed EPR, electron–nuclear double resonance (ENDOR) at W-band …

The evolution of solvent and solute diffusivity during fluid–solid phase transition was studied
in model wax in n-dodecane solutions in a wide concentration range. Studied systems were …

An original method to study the local environment of vanadyl-containing components of
heavy oils based on fine-tuning simulation of their electron spin resonance (ESR) spectra in …

The presented review considers the currently relevant methods for studying petroleum
porphyrins. For this purpose, the experimental approaches used during the investigation of …

The resins and asphaltenes of three heavy oils differing in origin (Permian and
Carboniferous) and vanadium content (0.025–0.165 wt%) have been studied as sources for …

We demonstrate, for the first time, the application of FTIR spectroscopic imaging approach in
situ to monitor the precipitation process of oil asphaltenes, induced by n-heptane under flow …