Results 51 to 60 of about 355,757 (390)
Karakterisasi karbon aktif dari Green Coke dengan perlakuan kimia (Na OH). [PDF]
, 1995 Green coke adalah hasil sainping dari destruksi minyak meritah, yang pemanfaatannya sebagiari besar sebagai bahan bakar. Untuk menambah riilai ekonomisnya maka perlu dilakukan pengembangan potensi lain dari green coke yaitu sebagai karbon aktif.
Fikri , Muslim
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Advanced Functional Materials, EarlyView.This review summarizes recent advances in closed‐cell in situ TEM strategies for accurate determination of the activity and stability of single‐atom catalyst systems during operation. Operando conditions causing dynamic changes of SAC systems are highlighted and we explain why ensemble average‐based optical techniques may benefit from the technological
Martin Ek +4 more
wiley +1 more source
Influence of coke structure on coke quality using image analysis method
International Journal of Coal Science & Technology, 2018 The quality of coke affects the performance of the blast furnace, factors affecting coke quality include coal properties, coal charge granulometry and carbonization conditions.
B. Ghosh +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Vacuum‐based deposition is promising for perovskite solar cells to be successfully commercialized. However, co‐evaporation, the most common vapor phase deposition technique, suffers from very low deposition rates. In this work, we reveal that high deposition rates can lead to carbon flakes depositing into the perovskite absorber layers due to material ...
Thomas Feeney +13 more
wiley +1 more source
Advances in Optical Image Analysis Textural Segmentation in Ironmaking
Applied Sciences, 2020 Optical image analysis is commonly used to characterize different feedstock material for ironmaking, such as iron ore, iron ore sinter, coal and coke. Information is often needed for phases which have the same reflectivity and chemical composition, but ...
Eugene Donskoi, Andrei Poliakov
doaj +1 more source
Advanced Materials, EarlyView.This review presents a focused and integrated perspective on copper‐based catalysts for the selective electrochemical reduction of CO2 to methanol. It elucidates active site dynamics, mechanistic pathways, and structure–activity relationships, while connecting fundamental insights with catalyst design, reactor engineering, and techno‐economic ...
Debabrata Bagchi +7 more
wiley +1 more source
Aspectos éticos de asignación equitativa en salud. Normas básicas de códigos internacionales
ARS Medica, 2016 Sin resumen ...
Ricardo Cruz-Coke Madrid
doaj +1 more source
On the deactivation of Zr-loading P-containing mesoporous carbon catalyst during methanol dehydration [PDF]
, 2019 Dimethyl ether (DME) has received much attention in the last few years due to its potential use as a diesel substitute and it can be obtained from dehydration of biomass-based methanol. γ-Alumina, ZSM-5 and HPAs were tested as catalysts.
Cordero, Tomás +4 more
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Radicals in carbonaceous residue deposited on mordenite from methanol [PDF]
, 2016 It is shown that control of the degree of coking can lead to the observation of hyperfine structures in the carbonaceous residues deposited from methanol over mordenite (H-MOR) at temperatures relevant to the conversion of methanol to hydrocarbons.
Ditzel, Evert J. +3 more
core +1 more source
Stabilizing Frustrated Phase Transitions in Selective Oxidation Reactions
Advanced Materials, EarlyView.Using multimodal operando spectromicroscopy, the frustrated phase transition responsible for selective oxidation over cobalt oxide spinel catalysts is identified, corresponding to combined surface reaction and Mars‐van Krevelen (MvK) dynamics. This regime is disrupted by the formation of mobile vacancies and the depletion of active oxygen at high ...
Luis Sandoval‐Diaz +11 more
wiley +1 more source