Results 51 to 60 of about 7,108 (292)

Propane dehydrogenation over cobalt-based catalysts: Influence of Sn oxidation states upon catalytic stability through the MCM-41 framework

open access: yesCarbon Resources Conversion
The development of cost-effective and environmentally benign catalysts for propane dehydrogenation (PDH) is critical for sustainable propylene production.
Mozhdeh Amanati   +3 more
doaj   +1 more source

Sustainable production of graphene from petroleum coke using electrochemical exfoliation

open access: yesnpj 2D Materials and Applications, 2021
Petroleum coke is a solid, carbonaceous by-product of oil refining and is normally used for heating or as an anode in aluminum and steel production.
Sanjit Saha   +9 more
doaj   +1 more source

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

open access: yesAdvanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska   +10 more
wiley   +1 more source

Use prospects forming bacterium slime in oil branch

open access: yesЮг России: экология, развитие, 2015
In article prospects of use of microbic technologies in oil-extracting and a petroleum-refining industry are considered. The data about allocation forming bacterium slime from the petropolluted objects located in territory of the Astrakhan region is ...
O. B. Soprunova, Nguen Viet Tien
doaj   +1 more source

Clustomesogen Showing Sub‐Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs2[Mo6Ii8(OCOC2F5)6] and Hexaethylenoxide Containing Mesogenic Dimers

open access: yesAdvanced Materials, EarlyView.
Associating a red‐NIR phosphorescent octahedral hexanuclear molybdenum cluster compound with hexaethyleneoxide chains bearing mesogenic units on both ends leads to an emissive hybrid liquid crystal showing mesomorphism on a very unusual temperature range down to −25°C.
Killiann Heinz   +11 more
wiley   +1 more source

Planning for the integrated refinery subsystems [PDF]

open access: yes, 2012
In global energy and industrial market, petroleum refining industry accounts for a major share. Through proper planning and the use of adequate mathematical models for the different processing units, many profit improving opportunities can be realized ...
Ejikeme-Ugwu, Edith
core  

Environmental pollution in the petroleum refining industry [PDF]

open access: yesAnalele Universitatii "Ovidius" Constanta - Seria Chimie, 2013
AbstractThe petroleum refining industry has a significant influence on the total pollution of the environment by industrial discharges and wastes. In the operation of petroleum refineries, the atmosphere is polluted with hydrogen sulfide, sulfur dioxide, nitrogen oxides, carbon monoxide, hydrocarbons, and other toxic substances. The main pollutants are
openaire   +1 more source

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

open access: yesAdvanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair   +3 more
wiley   +1 more source

Technology for separating powdered materials from petroleum coke using a two-rotor gravity classifier [PDF]

open access: yesE3S Web of Conferences
After refining petroleum products, a lot of petroleum coke residue remains. From year to year, the amount of coke on the planet is increasing, and scientists around the world are looking for ways to rationally use the remaining petroleum coke.
Abdunazarov Fahriddin   +1 more
doaj   +1 more source

A Super‐Adhesive Air Filter With Capillarity‐Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange

open access: yesAdvanced Materials, EarlyView.
We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park   +11 more
wiley   +1 more source

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