Results 11 to 20 of about 35,311 (304)

Artificial Intelligence Based Methods for Asphaltenes Adsorption by Nanocomposites: Application of Group Method of Data Handling, Least Squares Support Vector Machine, and Artificial Neural Networks

Nanomaterials, 2020
Asphaltenes deposition is considered a serious production problem. The literature does not include enough comprehensive studies on adsorption phenomenon involved in asphaltenes deposition utilizing inhibitors. In addition, effective protocols on handling
Mohammad Sadegh Mazloom, Farzaneh Rezaei, Abdolhossein Hemmati-Sarapardeh, Maen M. Husein, Sohrab Zendehboudi, Amin Bemani   +5 more
doaj   +2 more sources

Optimization of the Load of Transition Metal Oxides (Fe2O3, Co3O4, NiO and/or PdO) onto CeO2 Nanoparticles in Catalytic Steam Decomposition of n-C7 Asphaltenes at Low Temperatures

Nanomaterials, 2019
The main objective of this work is the catalyst optimization of Fe2O3-, Co3O4-, NiO- and/or PdO- (transition element oxides—TEO) functionalized CeO2 nanoparticles to maximize the conversion of asphaltenes under isothermal conditions at low ...
Oscar E. Medina, Jaime Gallego, Daniela Arias-Madrid, Farid B. Cortés, Camilo A. Franco   +4 more
doaj   +2 more sources

Petroleum Asphaltenes - Part 1: Asphaltenes, Resins and the Structure of Petroleum [PDF]

Oil & Gas Science and Technology, 2004
The definition of the nonvolatile constituents of petroleum (i.e., the asphaltene constituents, the resin constituents, and, to some extent, part of the oils fraction insofar as nonvolatile oils occur in residua and other heavy feedstocks) is an operational aid. It is difficult to base such separations on chemical or structural features.
James G. Speight
openalex   +3 more sources

Fractionation of Asphaltenes in Understanding Their Role in Petroleum Emulsion Stability and Fouling [PDF]

, 2017
SARA fractionation separates crude oil into fractions of saturates (S), aromatics (A), resins (R), and asphaltenes (A) based on the differences in their polarizability and polarity.
Akbarzadeh K., David Harbottle, Jacob Masliyah, Johan Sjoblom, Peiqi Qiao, Plamen Tchoukov, Qingxia Liu, Tu Y., Tu Y., Tu Y., Zhenghe Xu   +10 more
core   +2 more sources

Effect of Asphaltenes and Asphaltene Dispersants on Wax Precipitation and Treatment

Colloids and Interfaces
A detailed understanding of the interactions between wax and asphaltenes with other components of crude oils and the effect of treatments with paraffin inhibitors (PIs) and asphaltene dispersants (ADs), with a focus on identifying specific structure ...
Oualid M’barki, John Clements, Quoc P. Nguyen   +2 more
doaj   +2 more sources

Asphaltenes from Ethylene Tar as a Potential Raw Material to Obtain High Value-Added Products

Energies, 2023
Ethylene tar is the main byproduct of ethylene synthesis obtained via pyrolysis of hydrocarbon feedstock. With the growing demand for ethylene, the efficient use of ethylene tar is of great importance from both an economic and an ecological point of view.
Yulia Yu. Borisova, Alsu M. Minzagirova, Konstantin V. Shabalin, Vladimir I. Morozov, Dmitry N. Borisov, Makhmut R. Yakubov   +5 more
doaj   +1 more source

Sustainable valorization of asphaltenes via flash joule heating

Science Advances, 2022
The refining process of petroleum crude oil generates asphaltenes, which poses complicated problems during the production of cleaner fuels. Following refining, asphaltenes are typically combusted for reuse as fuel or discarded into tailing ponds and ...
M. Saadi, P. A. Advincula, Md Shajedul Hoque Thakur, A. Khater, Shabab Saad, Ali Shayesteh Zeraati, S. Nabil, Aasha Zinke, Soumyabrata Roy, Minghe Lou, Sravani N Bheemasetti, Md Abdullah Al Bari, Yiwen Zheng, J. L. Beckham, V. Gadhamshetty, Aniruddh Vashisth, M. G. Kibria, J. Tour, P. Ajayan, Muhammad M. Rahman   +19 more
semanticscholar   +1 more source

Physicochemical Characterization of Asphaltenes Using Microfluidic Analysis.

Chemical Reviews, 2022
Crude oils are complex mixtures of organic molecules, of which asphaltenes are the heaviest component. Asphaltene precipitation and deposition have been recognized to be a significant problem in oil production, transmission, and processing facilities ...
Nataira M. Pagán Pagán, Zhuqing Zhang, Thao Vy Nguyen, Amanda B. Marciel, S. Biswal   +4 more
semanticscholar   +1 more source

Influence of Asphaltene Modification on Structure of P3HT/Asphaltene Blends: Molecular Dynamics Simulations

Nanomaterials, 2022
Further development and commercialization of bulk heterojunction (BHJ) solar cells require the search for novel low-cost materials. The present study addresses the relations between the asphaltenes’ chemical structure and the morphology of the poly(3 ...
Natalia Borzdun, Artyom Glova, Sergey Larin, Sergey Lyulin   +3 more
doaj   +1 more source

High-Temperature Performance Evaluation of Asphaltenes-Modified Asphalt Binders

Molecules, 2020
Asphalt binder comprises four main fractions—asphaltenes (A), saturates (S), aromatics (A), and resins (R)—referred to as “SARA”. Asphaltenes plays an important role in determining the linear viscoelastic behavior of asphalt binders.
Amirhossein Ghasemirad, Nura Bala, Leila Hashemian   +2 more
doaj   +1 more source