Results 11 to 20 of about 6,753 (224)
Adsorption and catalytic oxidation of asphaltenes in fumed silica nanoparticles: Effect of the surface acidity [PDF]
Dyna, 2016 This study aims to evaluate the effect of surface acidity of fumed silica nanoparticles in adsorption and subsequent thermal cracking of Colombian asphaltenes.
Camilo Andrés Franco-Ariza +2 more
doaj +3 more sources
Computer Simulation of Asphaltenes [PDF]
Petroleum Chemistry, 2018 The review describes theoretical approaches based on computer simulations at various levels of details (from quantum chemical calculations to atomistic and coarse-grained models) to study asphaltenes and systems containing asphaltenes. The used methods are described, their advantages and disadvantages are discussed in terms of computational costs and ...
S. V. Lyulin +9 more
core +6 more sources
High-Temperature Performance Evaluation of Asphaltenes-Modified Asphalt Binders [PDF]
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 +2 more
doaj +2 more sources
Catagenetic trends in composition and structure parameters of asphaltenes [PDF]
GeoresursyСatagenetic transformations of asphaltenes of organic matter (OM) from recent sediments and fossil rocks were studied on rocks sampled from different sedimentary basins (Timan-Pechora, Mezen, West Siberian, Kuznetsk, Aldan-Maya and Middle Amur) of Russia.
L. S. Borisova, I. D. Timoshina
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 +5 more
doaj +1 more source
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 +3 more
doaj +1 more source
Nanomaterials, 2022 Petroleum asphaltenes are considered the most irritating components of various oil systems, complicating the extraction, transportation, and processing of hydrocarbons. Despite the fact that the paramagnetic properties of asphaltenes and their aggregates
Marat Gafurov +4 more
doaj +1 more source
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 +5 more
doaj +1 more source
Mechanical Properties of the Blends of Recycled Polypropylene with Blown and Soft Bitumens [PDF]
علوم و تکنولوژی پلیمر, 2008 In this investigation, the mechanical properties of the blends of blown bitumen110/10, heavy vacuum slops (H.V.S), bitumen 60/70 penetration grade and isotactic polypropylene (iPP) were studied for the first time.
V. Hadadi +3 more
doaj +1 more source
Revista Fuentes El Reventón Energético, 2023 Asphaltenes are characterized as the crude oil fraction with the highest molar mass and polarity, presetting mainly (poly) aromatic groups. The flocculation and deposition of asphaltenes causes large losses to the oil industry.
Daniel Rezende da Silva +5 more
doaj +1 more source