Changes in asphaltene structure during thermal cracking of residual oils: XRD study
The main objective of this study is to determine the effect of thermal cracking on asphaltene
molecular structure. Hence, n-heptane insoluble fractions were precipitated and collected …
molecular structure. Hence, n-heptane insoluble fractions were precipitated and collected …
NMR spectroscopy analysis of asphaltenes
In crude oil production and processing, asphaltene aggregation followed by precipitation is
a major problem for the oil industry as it causes deactivation of catalysts, blocking pipelines …
a major problem for the oil industry as it causes deactivation of catalysts, blocking pipelines …
Study on thermal cracking of Kuwaiti heavy oil (vacuum residue) and its SARA fractions by NMR spectroscopy
A Hauser, F AlHumaidan, H Al-Rabiah… - Energy & Fuels, 2014 - ACS Publications
Three vacuum residual oils (VR) derived from Ratawi Burgan (RB), Lower Fars (LF), and
Eocene (EOC) crude oils were subjected to thermal cracking in a pilot plant, which simulates …
Eocene (EOC) crude oils were subjected to thermal cracking in a pilot plant, which simulates …
Changes in asphaltenes during thermal cracking of residual oils
HMS Lababidi, HM Sabti, FS AlHumaidan - Fuel, 2014 - Elsevier
This study attempts to understand how asphaltene molecules change under thermal stress.
Asphaltene samples were precipitated from three crude oils and their atmospheric residues …
Asphaltene samples were precipitated from three crude oils and their atmospheric residues …
NMR characterization of asphaltene derived from residual oils and their thermal decomposition
FS AlHumaidan, A Hauser, MS Rana… - Energy & …, 2017 - ACS Publications
The main objective of this work is to determine the effect of thermal cracking on asphaltene
molecular structure by using nuclear magnetic resonance (NMR). The NMR is used to …
molecular structure by using nuclear magnetic resonance (NMR). The NMR is used to …
Structure comparison of asphaltene aggregates from hydrothermal and catalytic hydrothermal cracking of C5-isolated asphaltene
The main purpose of this study is to elucidate the effect of catalyst on asphaltene molecular
structure during hydrocracking of C 5-isolated asphaltene. Remained asphaltene and coke …
structure during hydrocracking of C 5-isolated asphaltene. Remained asphaltene and coke …
A comparison of the structures of> 300° C fractions in six Chinese shale oils obtained from different locations using 1H NMR, 13C NMR and FT-IR analyses
Q Wang, D Cui, P Wang, J Bai, Z Wang, B Liu - Fuel, 2018 - Elsevier
Structural features of> 300° C fractions of six Chinese shale oils, namely the Huadian,
Wangqing, Fushun, Longkou, Maoming and Yaojie oil, have been characterized using 1 H …
Wangqing, Fushun, Longkou, Maoming and Yaojie oil, have been characterized using 1 H …
Molecular structure and solubility determination of asphaltenes
S Ok, M Mahmoodinia, N Rajasekaran, MA Sabti… - Energy & …, 2019 - ACS Publications
Due to their complex chemical structure, identification and characterization of asphaltenes
remain a big challenge for researchers in the oil industry. In the current contribution, solution …
remain a big challenge for researchers in the oil industry. In the current contribution, solution …
Comparative study of single-and two-stage slurry-phase catalytic hydrocracking of vacuum residue for selective conversion of heavy oil
The selective conversion of asphaltenes to light products while inhibiting coke formation is
the most challenging in the heavy oil upgrading process. Herein, single-and two-stage slurry …
the most challenging in the heavy oil upgrading process. Herein, single-and two-stage slurry …
Exploration of the Difference in Molecular Structure of n-C7 and CO2 Induced Asphaltenes
Determination of the molecular structure of asphaltenes, especially in their native
environment, is a formidable challenge in petroleum chemistry. Here we demonstrate that a …
environment, is a formidable challenge in petroleum chemistry. Here we demonstrate that a …