Results 1 to 10 of about 352,140 (120)

Membranes Based on Cellulose and Copolymers of Acrylonitrile Prepared from Joint Solutions

Membranes, 2023
Cellulose and copolymers of acrylonitrile (PAN) are characterized by their chemical resistance to several conventional solvents. Therefore, these polymers are often used to obtain membranes for the recovery of such solvents.
Igor S. Makarov, Gulbarshin K. Shambilova, Markel I. Vinogradov, Tatyana S. Anokhina, Aigul S. Bukanova, Fazilat B. Kairliyeva, Saule K. Bukanova, Ivan S. Levin   +7 more
doaj   +1 more source

Direct Reduction in Greenhouse Gases by Continuous Dry (CO₂) Reforming of Methane over Ni-Containing SHS Catalysts

Energies, 2021
The world of energy is on the cusp of profound transformation. Hydrogen or hydrogen-containing fuel mixtures in the form of synthesis gas, as carriers of clean energy, will be in the short term among the most efficient solutions to pressing environmental
Galina Xanthopoulou, Savvas Varitis, Manapkhan Zhumabek, Konstantinos Karanasios, George Vekinis, Svetlana A. Tungatarova, Tolkyn S. Baizhumanova   +6 more
doaj   +1 more source

Direct Homogeneous Synthesis of Compounds with Two O Atoms and Long-Chain Hydrocarbons from CO and H₂: Co–Ru/N-methylpyrrolidone Catalyst

Molecules, 2023
The homogeneous acetic acid synthesis-type Ru–Co–Li/N-methylpyrrolidone catalyst for CO and H2 transformations has been studied at moderately high pressures. For 1CO:2H2, low acetic acid selectivity has been observed, along with remarkable methyl acetate
Anton Lvovich Maximov, Mayya V. Kulikova, Alexey E. Kuz’min, Mikhail I. Ivantsov   +3 more
doaj   +1 more source

Synthesis Gas Composition Prediction for Underground Coal Gasification Using a Thermochemical Equilibrium Modeling Approach

Energies, 2020
Underground coal gasification (UCG) is an in situ conversion technique that enables the production of high-calorific synthesis gas from resources that are economically not minable by conventional methods. A broad range of end-use options is available for
Christopher Otto, Thomas Kempka
doaj   +1 more source

Trash to Treasure: Eco-Friendly and Practical Synthesis of Amides by Nitriles Hydrolysis in WEPPA

Molecules, 2019
The hydration of nitriles to amides in a water extract of pomelo peel ash (WEPPA) was realized with moderate to excellent yields without using external transition metals, bases or organic solvents.
Yajun Sun, Weiwei Jin, Chenjiang Liu
doaj   +1 more source

Improving the energy-efficiency of small-scale methanol production through the use of microturboexpander units

Записки Горного института, 2022
The issue of improving the energy-efficiency of container-based gas chemical plants for methanol production in field conditions is considered. The relevance of the direction is determined by the necessity for development of remote Arctic hydrocarbon ...
Aleksey М. Kuzmin, George V. Buslaev, Valentin A. Morenov, Sofiya N. Tseneva, Nikita A. Gavrilov   +4 more
doaj   +1 more source

Efficiency Enhancement of the Single Line Multi-Stage Gasification of Hungarian Low-Rank Coal: Effects of Gasification Temperature and Steam/Carbon (S/C) Ratio

Energies, 2023
Coal gasification is considered a promising solution for the production of synthetic fuels and eventually as a fuel for combined heat and power systems and heating buildings.
Thuan Duc Mai, Tamás Koós, Emese Sebe, Zoltán Siménfalvi, András Arnold Kállay   +4 more
doaj   +1 more source

Simulation of Synthesis Gas Production from Steam Oxygen Gasification of Colombian Coal Using Aspen Plus®

Energies, 2012
A steady state simulation of syngas production from a Steam Oxygen Gasification process using commercial technologies was performed using Aspen Plus®.
Jorge E. Preciado, John J. Ortiz-Martinez, Juan C. Gonzalez-Rivera, Rocio Sierra-Ramirez, Gerardo Gordillo   +4 more
doaj   +1 more source

Development of Reaction Kinetics Model for the Production of Synthesis Gas from Dry Methane Reforming

Bulletin of Chemical Reaction Engineering & Catalysis, 2021
The energy supply systems dependent on fossils and municipal solid waste (MSW) materials are primarily responsible for releasing greenhouse (GHG) gases and their related environmental hazards.
Abrar Inayat, Muhammad A. B. Ahmad, Mohsin Raza, Chaouki Ghenai, Salman Raza Naqvi, Muhammad Ayoub   +5 more
doaj   +1 more source

Mathematical Modeling of the Hydrodynamic Instability and Chemical Inhibition of Detonation Waves in a Syngas–Air Mixture

Mathematics, 2023
This paper presents the results of the two-dimensional modeling of the hydrodynamic instability of a detonation wave, which results in the formation of an oscillating cellular structure on the wave front. This cellular structure of the wave, unstable due
Valeriy Nikitin, Elena Mikhalchenko, Lyuben Stamov, Nickolay Smirnov, Vilen Azatyan   +4 more
doaj   +1 more source