Results 31 to 40 of about 684,118 (324)

Performance modeling of nano structure graphene membrane for hydrogen separation using CFD methods [PDF]

open access: yesمجله مدل سازی در مهندسی, 2018
Due to high energy consumption and pollution rate caused by fossil fuels, in the world, hydrogen has been considered by many researchers as a clean fuel. Therefore, process of hydrogen separation can also be very important in this regard.
Rahman Zeynali   +2 more
doaj   +1 more source

Evolutionary and Pulsational Properties of Ultra-massive White Dwarfs. The Role of Oxygen-Neon Phase Separation. [PDF]

open access: yes, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018Ultra-massive hydrogen-rich white dwarf stars are expected to harbour oxygen/neon cores resulting from semidegenerate carbon burning when the progenitor ...
Althaus, L.G.   +3 more
core   +2 more sources

Gas and surface diffusion in modified γ-alumina systems [PDF]

open access: yes, 1989
The transport of pure gases through a microporous membrane is described. The alumina-based membrane (pores 2.5-4 nm) is suitable for Knudsen diffusion separation.
Burggraaf, A.J.   +2 more
core   +2 more sources

Gas Separation Silica Membranes Prepared by Chemical Vapor Deposition of Methyl-Substituted Silanes

open access: yesMembranes, 2019
The effect on the gas permeance properties and structural morphology of the presence of methyl functional groups in a silica membrane was studied. Membranes were synthesized via chemical vapor deposition (CVD) at 650 °C and atmospheric pressure ...
Harumi Kato   +5 more
doaj   +1 more source

Isotopic fractionation in proteins as a measure of hydrogen bond length [PDF]

open access: yes, 2015
If a deuterated molecule containing strong intramolecular hydrogen bonds is placed in a hydrogenated solvent it may preferentially exchange deuterium for hydrogen.
Athokpam, Bijyalaxmi   +2 more
core   +2 more sources

Single-Atom Site Photocatalysts Boosting Organic Synthesis: The Integration of a Metal Active Site and Photosensitive Unit

open access: yesNanomaterials
Metallaphotoredox catalysis merges the powerful bond-forming abilities of transition metal catalysis with unique electron or energy transfer pathways accessible in photoexcited states, injecting new vitality into organic synthesis.
Haoyue Sun   +5 more
doaj   +1 more source

Insights into the application of microfluidic platforms in enhanced oil recovery

open access: yesPetroleum
Enhanced oil recovery (EOR) technologies are used to recover most of the trapped crude oil from our limited reserves. With the escalating energy demand, EOR will achieve substantial economic benefits and greatly help in the exploitation of natural oil ...
Fadi Dawaymeh   +3 more
doaj   +1 more source

Effect of Dehydration Temperature on the H2 Separation Potential of Hydroxy Sodalite Zeolite Membranes [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2015
The main goal of this work was to synthesize and evaluate the effect of dehydration temperature on the potential application of hydroxy sodalite zeolite membrane.
Mohammad Vaezi, Ali Akbar Babaluo
doaj   +1 more source

Bio-hythane production from food waste by dark fermentation coupled with anaerobic digestion process: A long-term pilot scale experience [PDF]

open access: yes, 2012
In this paper are presented the results of the investigation on optimal process operational conditions of thermophilic dark fermentation and anaerobic digestion of food waste, testing a long term run, applying an organic loading rate of 16.3 kgTVS/m3d in
Bolzonella, David   +4 more
core   +1 more source

Silica membrane performance for hydrogen separation from methanol steam reforming products: Assessment of different multistage membrane schemes [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2019
The aim of this work is a theoretical study of multistage silica membrane configurations for hydrogen purification by methanol steam reforming (MSR) products.
Abbas Aghaeinejad-Meybodi   +2 more
doaj   +1 more source

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