Characterization of asphaltenic material obtained by treating of vacuum residue with different reactive molecules

Optical Tweezers-Based Measurements of Colloidal Forces between Asphaltene Thin Films: Effect of Ultrasonication

“…A known mass (5–6 mg) of coated microparticles was heated in a TGA550 analyzer from room temperature to 700 °C at a rate of 10 °C/min in a nitrogen atmosphere. The upper temperature was selected to ensure complete thermal degradation of the asphaltenes, which takes place at an approximate range of 400–650 °C . The mass percentage of asphaltenes in the coated particles and the thickness of the asphaltene coating (assuming uniform surface coverage) were determined from the mass loss, as discussed in the Supporting Information.…”

Molecular Dynamics Study on the Compatibility of Asphalt and Rubber Powder with Different Component Contents

“…The double bond and the COOR functional group of C 18 acrylates could promote the polymerization reaction between modifiers and natural asphalt. NMR analysis of bitumen shows that the molecular chain length of bitumen alkanes is distributed between C 16 and C 36 , and C 22 is located in the middle part of this interval . Ren et al studied the density difference between polymer and asphalt components caused by the deposit stability problem, established the polycyclic aromatic hydrocarbons in alicyclic hydrocarbons as basic structures with different lengths of the alkyl carbon chain containing sulfur, nitrogen, oxygen, other impurity atoms, and the corresponding groups of gelatin molecules model, which this paper adopts on behalf of gelatin molecules .…”

“…NMR analysis of bitumen shows that the molecular chain length of bitumen alkanes is distributed between C 16 and C 36 , and C 22 is located in the middle part of this interval. 19 Ren et al studied the density difference between polymer and asphalt components caused by the deposit stability problem, established the polycyclic aromatic hydrocarbons in alicyclic hydrocarbons as basic structures with different lengths of the alkyl carbon chain containing sulfur, nitrogen, oxygen, other impurity atoms, and the corresponding groups of gelatin molecules model, which this paper adopts on behalf of gelatin molecules. 20 Xu et al pointed out that the alkane C 22 H 44 contained in asphalt has the highest content, and the softening point and boiling point of C 22 H 44 are consistent with the softening point and boiling point of most asphalt oils.…”

Molecular structure characterization of asphaltene in the presence of inhibitors with nanoemulsions

“…These ndings are similar to those reported in the literature which suggested the presence of two types of coke in asphaltene sample. [50][51][52] Asphaltene particles are subjected to very severe conditions above 450 C, leading to form coke as nal residue. 53 Total volatilization is observed at 550 C; at this temperature and with the presence of oxygen in the air, asphaltene was fully burned and the maximum weight loss is achieved.…”