Results 81 to 90 of about 6,681 (230)
Production of oxygen from lunar ilmenite [PDF]
The overall objective of this project was to develop a novel carbothermal reduction process for production of oxygen from lunar ilmenite. The specific objective was to use a reaction sequence in which a wide variety of carbonaceous compounds (including ...
Shadman, F., Zhao, Y.
core +1 more source
Bio-inspired dewetted surfaces based on SiC/Si interlocked structures for enhanced-underwater stability and regenerative-drag reduction capability [PDF]
, 2019 Drag reduction has become a serious issue in recent years in terms of energy conservation and environmental protection. Among diverse approaches for drag reduction, superhydrophobic surfaces have been mainly researched due to their high drag reducing ...
Baek, Seunghyun +5 more
core +1 more source
Carbothermic Reduction of Alumina: A Thermodynamic Analysis
Canadian Metallurgical Quarterly, 1965 Abstractusing new thermodynamic data for Al4C3, stability relationships in the Al-C-O system have been determined. A Pourbaix-Ellingham diagram has been constructed and is used to evaluate the equilibrium carbothermic-reduction process. The analysis indicates that liquid Al can never be obtained below 2100° K and that appreciable amounts of Al2O(g) are
openaire +2 more sources
Stepwise carbothermal reduction of bauxite ores
International Journal of Mineral Processing, 2013 Abstract The commercial technologies for aluminium production include production of alumina from bauxite and smelting of alumina to produce aluminium. The current technology is energy intensive, and a major source of greenhouse gas emissions and harmful fluoride emissions.
Yeh, Chun-Hung, Zhang, Guangqing
openaire +3 more sources
Environmental Toxicology, EarlyView.ABSTRACT Titanium dioxide (TiO2), used as a food additive (labeled E171 in Europe), was withdrawn from the European market in 2022. The E171 toxicity mechanism involves its uptake, oxidative stress, DNA damage, and inflammation. It has been hypothesized that the TiO2 accumulation nanoparticles (NPs) or E171 triggers tissue damage, and some studies have
Carmen Ximena Martínez‐Escutia +3 more
wiley +1 more source
Recycling of Alkaline Batteries via a Carbothermal Reduction Process
Batteries, 2019 Primary battery recycling has important environmental and economic benefits. According to battery sales worldwide, the most used battery type is alkaline batteries with 75% of market share due to having a higher performance than other primary batteries ...
Selçuk Yeşiltepe +3 more
doaj +1 more source
Research on processes for utilization of lunar resources quarterly report, 16 jul. - 15 oct. 1964 [PDF]
Lunar resource utilization - silicate reduction unit and carbon monoxide reduction ...
Guter, G. A. +2 more
core +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Clasts of albite‐porphyroblastic quartzofeldspathic schist, derived from the Otago Schist basement, occur within the Port Chalmers Breccia, a diatreme at the centre of the Dunedin stratovolcano, New Zealand. Schists have undergone varying degrees of replacement reactions (at temperatures of 300° to >500°C) producing hornfelses, with Ca‐ and K‐enriched ...
Alan F. Cooper
wiley +1 more source
Study on the theoretical and mechanism of CaF₂-catalyzed vacuum carbothermal reduction of MgO
Journal of Magnesium and AlloysThe increasing demand for magnesium as a next-generation structural material highlights the significance of incorporating CaF₂ as a catalyst to enhance the efficiency of vacuum carbothermal reduction of magnesium (VCTRM).
Tingzhuang Ma +9 more
doaj +1 more source
The onsite manufacture of propellant oxygen from lunar resources [PDF]
The Aerojet carbothermal process for the manufacture of oxygen from lunar materials has three essential steps: the reduction of silicate with methane to form carbon monoxide and hydrogen; the reduction of carbon monoxide with hydrogen to form methane and
Beegle, Robert L., Jr. +4 more
core +1 more source