Results 81 to 90 of about 22,271 (251)

Evaluation of the Influence of Antifoam Formulations on Asphaltene Aggregates Using AFM and SEM‐EDS

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
ABSTRACT Asphaltenes, naturally occurring surfactants in crude oil play a pivotal role in stabilizing oily foams during primary oil processing. Accordingly, understanding how antifoam formulations influence asphaltene aggregation is essential. This study investigates the effect of polydimethylsiloxane (PDMS) with varying molar masses on asphaltene ...
Mariana Teixeira Mendes   +4 more
wiley   +1 more source

Review of Flash Joule Heating for the Synthesis of Graphene and Other Functional Carbon Materials

open access: yesCarbon Energy, Volume 8, Issue 1, January 2026.
ABSTRACT Flash Joule heating (FJH), as a high‐efficiency and low‐energy consumption technology for advanced materials synthesis, has shown significant potential in the synthesis of graphene and other functional carbon materials. Based on the Joule effect, the solid carbon sources can be rapidly heated to ultra‐high temperatures (> 3000 K) through ...
Zhiwu Tan   +10 more
wiley   +1 more source

Effect of Asphaltenes and Asphaltene Dispersants on Wax Precipitation and Treatment

open access: yesColloids 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   +2 more
doaj   +1 more source

Energy efficiency challenge of waxy oil production by electric submersible pumps [PDF]

open access: yes, 2017
In this paper the solid wax formation in two live oils of the Samara region fields on five operating pressures with different contents of high molecular substances were examined.
Roschin, P. V., Struchkov, I. A.
core   +2 more sources

Liquid–liquid equilibrium studies of n‐butane–bitumen system with application to solvent‐aided in situ bitumen recovery

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 1, Page 425-441, January 2026.
Abstract Solvent‐assisted recovery methods have gained attention as an alternative to conventional thermal methods which have significant environmental drawbacks and high greenhouse gas emissions. Solvent‐assisted recovery methods can lead to various phase equilibria, such as vapour–liquid equilibrium (VLE) and liquid–liquid equilibrium (LLE), under ...
Amr Mahgoub   +3 more
wiley   +1 more source

Three Dimensional Measurements of Asphaltene Deposition in a Transparent Micro-Channel [PDF]

open access: yes, 2016
This study describes a novel experimental approach to directly measure the thicknesses of asphaltene deposits in micro-channels. The thickness of the asphaltene deposit is estimated using a visualization technique based on 3D digital microscopy.
Biswal, S. L.   +7 more
core   +1 more source

Thermal Conversion of Heavy Oil Systems and Analysis of Structural Changes of their High Components with PMR Method [PDF]

open access: yes, 2014
Heavy oil systems are thermolyzed with different ratios of amount of resins and asphaltenes: 3.4, 3.8, 5.3, and 12.4. The change in yield and composition of gaseous, liquid and solid products of thermolysis is shown depending on the ratio of the resin ...
Golovko, A. K.   +3 more
core   +1 more source

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

open access: yesNanomaterials, 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   +4 more
doaj   +1 more source

Investigating the Influence of n-Heptane versus n-Nonane upon the Extraction of Asphaltenes

open access: hybrid, 2022
Latifa K. Alostad   +5 more
openalex   +1 more source

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