Results 101 to 110 of about 1,608 (223)

Role of catalysts during direct coal liquefaction

Fuel Processing Technology, 1986
Hydroliquefaction of a highly volatile bituminous French coal (Freyming) was studied in a wide temperature range (from ∼ 350°C up to ∼ 400°C). Non-porous catalyst precursors (Fe2O3, MoO3, Al2O3) obtained by a flame method were used. They were sulfided in-situ by addition of elemental sulfur.
R. Bacaud, M. Besson, H. Charcossetl, M. Oberson, Huu Tran Vinh, J. Varloud   +5 more
openaire   +1 more source

Numerical Investigation of the Influence of Interparticle Cohesion During the Shear Behavior of Granular Soil

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 9, Page 4020-4035, 25 June 2026.
ABSTRACT Interparticle cohesive forces play a crucial role in governing the shear behavior of many soils; however, quantifying this effect remains challenging due to limited microscopic insights available from laboratory experiments. In this context, the current study aims to investigate the influence of microscale cohesion on the shear response using ...
Thao Doan, Buddhima Indraratna, Thanh T. Nguyen, Cholachat Rujikiatkamjorn   +3 more
wiley   +1 more source

Rheological properties study of high-viscosity asphalt based on direct coal liquefaction residue

Frontiers in Built Environment
Direct coal liquefaction residue (DCLR), a byproduct of the coal-to-oil process, poses a significant challenge for resource recycling and high-value utilization.
Liu Yong, Wang Yong, Ru Yanyan, Li Yandan, Li Yongxiang, Gao Zhong   +5 more
doaj   +1 more source

Water Consumption in Hydrogen Production Through Electrolysis: Overview, State‐of‐the‐Art, and Future Trends

WIREs Energy and Environment, Volume 15, Issue 2, June 2026.
Commercial‐scale “green” hydrogen projects use renewable electricity to drive electrolysis—the process of splitting water into hydrogen and oxygen. Producing green hydrogen requires water not only for the electrolysis reaction but also for cooling the electrolyzers, which release waste heat.
Antonio Santos Sánchez, Gleizer Vitor Nonato, André Luis Silva, Idelfonso Bessa dos Reis Nogueira, Carine Menezes Rebello, Diego Lima Medeiros, Julian David Hunt   +6 more
wiley   +1 more source

Political Cycles, Electricity Policy, and Mexico's Economy

Latin American Policy, Volume 17, Issue 2, June 2026.
ABSTRACT Electricity reform in Mexico should stimulate economic growth, improve energy efficiency, and reduce greenhouse gas emissions. This article evaluates the successes and failures of reform and draws lessons across political cycles by analyzing changes in political dynamics—often tied to policy reversals—and the legal framework during the pro ...
David Bonilla
wiley   +1 more source

Comprehensive Quantitative Analysis of Coal-Based Liquids by Mask R-CNN-Assisted Two-Dimensional Gas Chromatography

Separations
A comprehensive understanding of the compositions and physicochemical properties of coal-based liquids is conducive to the rapid development of multipurpose, high-performance, and high-value functional chemicals.
Huan-Huan Fan, Xiang-Ling Wang, Jie Feng, Wen-Ying Li   +3 more
doaj   +1 more source

Preconversion processing of bituminous coals: New directions to improved direct catalytic coal liquefaction. [Effect of pretreatment before liquefaction] [PDF]

, 1992
The main task of this quarter was to install reactors to conduct preconversion and liquefaction of coal. Coal and coal liquids were collected. The anaerobic chamber (Model 855-AC; Plas Labs, inc.) was procured and set up to store coal samples under an inert gas.
openaire   +2 more sources

REACTIVITY OF ASPHALTENES IN DIRECT COAL LIQUEFACTION.

, 1985
Analytical data for four asphaltenes isolated from different stages of a direct coal liquefaction process are reported. Long contact times under hydrocracking conditions produce asphaltenes of lower H:C ratio, lower heteroatom content and higher ...
Kemp, W., Steedman, W., Thomson, M. A., Scott, D. A.   +3 more
core  

Life cycle greenhouse gas emissions of conventional and alternative steel production methods in countries dependent on energy import: A South Korean case study

Energy Conversion and Management: X
This study used a life cycle assessment to quantitatively compare greenhouse gas emissions among traditional coal blast furnaces and alternative methods such as hydrogen direct reduction, natural gas direct reduction, and electric arc furnaces ...
Juha Lee, Gyuna Kwak, Yujin Jung, Wonjae Choi   +3 more
doaj   +1 more source

The hybrid plant concept: Combining direct and indirect coal liquefaction processes [PDF]

, 1990
The objective of this study is to assess the technical and economic impacts of siting direct two-stage coal liquefaction and indirect liquefaction, using slurry Fischer-Tropsch (F-T) reactors, at the same location.
Tomlinson, G. C., El Sawy, A., Gray, D.
core