Results 41 to 50 of about 22,271 (251)

Composition of Pre-ozonated High-Sulfur Natural Bitumen Cracking Products [PDF]

, 2015
The results analysis of fractional and material composition of the cracking products of Ashalchinskoye and Karmalskoye bitumen deposits was presented in this work.
Dombrovskaya, A. S., Golovko, A. K., Krivtsov, E. B., Krivtsova, Nadezhda Igorevna, Sviridenko, N. N.   +4 more
core   +1 more source

Ultrasound–Calcination Synergistic Control of (Ce, La)PO4 Catalyst Structure for Enhanced Low‐Temperature NH3‐SCR Performance

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In this study, (Ce, La)PO4 catalysts were synthesized via an ultrasound‐assisted method. The effects of ultrasound duration and calcination temperature on the low‐temperature NH3‐SCR performance were systematically investigated. The results indicated that the (Ce, La)PO4 catalyst prepared with an ultrasound treatment time of 20 min and a ...
Na Li, Kai Yan, Shuning Tan, Ruifang Wang, Zhiyu Zhang   +4 more
wiley   +1 more source

Investigation of structural features of asphaltenes used for carbon materials synthesis by arc plasma treatment

Petroleum Research
This study presents analysis of asphaltenes isolated from two crude oils: naphthenic-aromatic biodegraded oil and paraffin-naphthenic oil, which have been used as precursors for carbon materials synthesis.
Andrey Grinko, Evgenia Leushina, Yuliya Petrova, Pavel Povalyaev, Alexander Pak, Arina Goncharova, Vasily Kaichev, Valentina Egorova, Kirill Cherednichenko, Dmitry Zelentsov, Tatiana Cheshkova   +10 more
doaj   +1 more source

La influencia de los productos químicos en la precipitación de asfaltenos: una comparación entre las técnicas de microscopía de fuerza atómica y de infrarrojo cercano

Revista Fuentes El Reventón Energético, 2017
Asphaltenes can cause serious problems to petroleum industry. Indication of asphaltenes stability can be obtained by precipitation induced by n-heptane, monitored by near-infrared (NIR).
Jeniffer N. Figueira, Renata A. Simão, Bluma G. Soares, Elizabete F. Lucas   +3 more
doaj   +1 more source

Heat Treatment Condition Influence on Novokuibyshevsk Vacuum Residue Component Composition [PDF]

, 2014
The article presents the information about thermal degradation of Novokuibyshevsk vacuum residue and change of products composition during this process. The optimal conditions for the thermal destruction of vacuum residue components were established. The
Golovko, A., Karpov, Y., Krivonosova, A., Krivtsov, E., Krivtsova, Nadezhda Igorevna   +4 more
core   +1 more source

Dynamic accelerated solvent extraction for faster oil sands oil, water, and solids determination and solids cleaning

The Canadian Journal of Chemical Engineering, EarlyView.
25 g of oil sands extracted by dynamic accelerated solvent extraction, yielding 177 mL of bitumen–toluene extract and clean dried solids in approximately 12 min. Abstract Determining the oil, water, and solids (OWS) contents of oil sand is essential to many aspects of the oil sands industry including mine planning, optimization of extraction processes,
Ceanna Ting‐Yan Cheung, Matthew Ripmeester   +1 more
wiley   +1 more source

Взаимосвязь удельного показателя поглощения нефтей, природных битумов и их компонентов в видимой области спектра с параметрами их состава [PDF]

, 2003
Актуальность работы обусловлена необходимостью экспрессной оценки группового состава нефтей, их некоторых физико-химических и технологических свойств, в том числе для контроля над разработкой нефтяных месторождений.
Diedrich, Klaus, Kressin, Philip, Malik, Eduard, Meyhöfer-Malik, Annette, Wolber, Eva-Maria   +4 more
core   +2 more sources

Interfacial adsorption characteristics of surfactant‐modified nanoparticles: Equilibrium and dynamic effects of salinity at the oil–water interface

The Canadian Journal of Chemical Engineering, EarlyView.
Surfactant‐modified nanoparticles adsorb at the oil–water interface, enabling interfacial stabilization and microemulsion formation. Abstract This study systematically investigated the interfacial behaviour of silicon dioxide (SiO2) and aluminium oxide (Al2O3) nanoparticles (NPs) functionalized with cationic (CTAB), anionic (SDS), and nonionic (Triton ...
Behrooz Ahmadi, Eghbal Sahraei, Amir H. Mohammadi   +2 more
wiley   +1 more source

Catagenetic trends in composition and structure parameters of asphaltenes

Georesursy
Сatagenetic 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   +1 more source

Extracting the equation of state of lattice gases from Random Sequential Adsorption simulations by means of the Gibbs adsorption isotherm

, 2017
A novel approach for deriving the equation of state for a 2D lattice gas is proposed, based on arguments similar to those used in the derivation of the Langmuir-Szyszkowski equation of state for localized adsorption.
Darjani, Shaghayegh, Koplik, Joel, Pauchard, Vincent   +2 more
core   +1 more source