Results 81 to 90 of about 38,302 (224)

Desulfurization of Benzothiophene Derivatives by Solvent Extraction Coupled With Oxidation Using Oxomolybdenum(VI) Bis(pyrazolyl)methane Catalysts

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
A polymeric hybrid material formulated as [MoO3(bis(pyrazolyl)methane)] has been prepared and used as a catalyst precursor for the complete oxidative desulfurization of a model diesel containing recalcitrant benzothiophene derivatives. The precursor is converted in situ to an oxodiperoxo active species which is retained in the recyclable extractant ...
Ana C. Gomes   +4 more
wiley   +1 more source

Environmental compliance assessment for the desulfurization of sulfide mine waste tailings: A case study of Ok Tedi Mine, Papua New Guinea

open access: yesEnvironmental Challenges
The effective management of sulfide mine waste tailings is a complex task because of the potential for acid rock drainage to harm aquatic ecosystems. Although previous research has explored the environmental consequences of sulfide mine waste tailings ...
Wesley Kiwingim   +3 more
doaj   +1 more source

Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction

open access: yessteel research international, EarlyView.
Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo   +8 more
wiley   +1 more source

Study on the behavior of magnesium in molten salt electrolysis in-situ desulfurization during hot metal pretreatment

open access: yesMetalurgija, 2019
A desulfurization method based molten salt electrochemistry using magnesite-based desulfurizer for hot metal pretreatment was investigated. The feasibility of desulphurization of hot metal by magnesium produced from magnesitebased desulfurizer through ...
L. Cheng, K. Liu, R. Z. Han, N. Luo
doaj  

Coal desulfurization by low temperature chlorinolysis, phase 1 [PDF]

open access: yes
The reported activity covers laboratory scale experiments on twelve bituminous, sub-bituminous and lignite coals, and preliminary design and specifications for bench-scale and mini-pilot plant ...
Andress, D. F.   +4 more
core   +1 more source

The synthesis and characterization of new higher nuclearity arene-ruthenium-sulfur clusters : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Chemistry at Massey University, New Zealand [PDF]

open access: yes, 1999
This thesis describes a project investigating the synthesis and characterization of new higher nuclearity arene-ruthenium-sulfur clusters and arene-ruthenium-nitrogen complexes.
Guo, Libei
core  

Structural alterations of lignins in transgenic poplars with depressed cinnamyl alcohol dehydrogenase or caffeic acid O-methyltransferase activity have an opposite impact on the efficiency of industrial kraft pulping [PDF]

open access: yes, 1999
International audienceWe evaluated lignin profiles and pulping performances of 2-year-old transgenic poplar (Populus tremula × Populus alba) lines severely altered in the expression of caffeic acid/5-hydroxyferulic acidO-methyltransferase (COMT) or ...
Boerjan, Wout   +10 more
core   +3 more sources

The Application of Hydrochar Composite Briquettes for Sustainable Slag Foaming in the Electric Arc Furnace Process

open access: yessteel research international, EarlyView.
Hydrochar‐mill‐scale briquettes with varying C/O molar ratios (0.07–0.90) have been tested at 1650 °C to evaluate their slag foaming performance for electric arc furnace application. All seven briquette recipes developed succeed in promoting slag foaming.
Yu‐Chiao Lu   +3 more
wiley   +1 more source

Application Research of Several Improved Active Disturbance Rejection Control Methods for Superheated Steam Temperature System

open access: yesIET Smart Energy Systems, EarlyView.
A series of improved active disturbance rejection controller (ADRC) methods are proposed, and their parameter tuning processes are presented. They are comprehensively compared with regular proportional integral (PI) control and ADRC, and detailed superheated steam temperature (SST) simulations are carried out to verify their notably superior control ...
Honghao Li   +3 more
wiley   +1 more source

Microaeration Process Design, Control, and Monitoring for Biogas Desulfurization in Anaerobic Digestion

open access: yesChemBioEng Reviews, Volume 13, Issue 2, April 2026.
This review critically explores how microaeration can enhance biogas desulfurization in anaerobic digestion. It summarizes existing data and provides a comprehensive overview of various microaeration strategies by focusing on both technical and fundamental aspects.
Samiullah Khaskheli   +2 more
wiley   +1 more source

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