Results 11 to 20 of about 60,233 (206)

Methane Dry Reforming Catalysts Based on Pr-Doped Ceria–Zirconia Synthesized in Supercritical Propanol

open access: yesEnergies, 2023
This paper is devoted to the study of active and stable nickel catalysts for methane dry reforming based on Pr-doped ceria–zirconia obtained via the solvothermal continuous method.
Marina Arapova   +8 more
doaj   +1 more source

Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts

open access: yesNanomaterials, 2022
Two series of Ni/Ce(Ti/Nb)ZrO2 catalysts were prepared using citrate route and original solvothermal continuous flow synthesis in supercritical isopropanol and studied in dry reforming of methane (DRM). TEM, XPS and FTIRS of adsorbed CO confirm influence
Ekaterina Smal   +10 more
doaj   +1 more source

Materials processing using supercritical fluids [PDF]

open access: yesHemijska Industrija, 2005
One of the most interesting areas of supercritical fluids applications is the processing of novel materials. These new materials are designed to meet specific requirements and to make possible new applications in Pharmaceuticals design, heterogeneous ...
Orlović Aleksandar M., Skala Dejan U.
doaj   +1 more source

Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming

open access: yesNanomaterials, 2020
Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols.
Mikhail Simonov   +6 more
doaj   +1 more source

Novel Ni/Ce(Ti)ZrO2 Catalysts for Methane Dry Reforming Prepared in Supercritical Alcohol Media

open access: yesEnergies, 2020
To achieve a high activity and coking stability of nickel catalysts in dry reforming of methane, materials comprised of ceria–zirconia doped by Ti were investigated as supports.
Yuliya Bespalko   +9 more
doaj   +1 more source

Supercritical hydrothermal synthesis of silver nanoparticles, composites, and their characterizations

open access: yesMongolian Journal of Chemistry, 2021
Silver nanoparticles (AgNPs) and silver nanoparticles doped activated carbon (AC-Ag) composite materials were synthesized by hydrothermal processes in supercritical water conditions (29 MPa and 400 °C) using batch reactor. We studied the influence of the
Narandalai Byamba-Ochir   +3 more
doaj   +1 more source

Applications of subcritical and supercritical water conditions for extraction, hydrolysis, gasification, and carbonization of biomass: a critical review [PDF]

open access: yesBiofuel Research Journal, 2017
This review summarizes the recent essential aspects of subcritical and supercritical water technology applied tothe extraction, hydrolysis, carbonization, and gasification processes.
D. Lachos-Perez   +6 more
doaj   +1 more source

Methods for synthesizing diethyl carbonate from ethanol and supercritical carbon dioxide by one-pot or two-step reactions in the presence of potassium carbonate [PDF]

open access: yes, 2009
Carbon dioxide sequestration was studied by synthesizing diethyl carbonate (DEC) from ethanol and CO2 under supercritical conditions in the presence of potassium carbonate as a base. The co-reagent was ethyl iodide or a concentrated strong acid.
Gasc, Fabien   +2 more
core   +1 more source

Cellulosic materials as biopolymers and supercritical CO2as a green process: chemistry and applications [PDF]

open access: yes, 2012
In this review, we describe the use of supercritical CO2 (scCO2) in several cellulose applications. The focus is on different technologies that either exist or are expected to emerge in the near future.
Camy, Séverine   +2 more
core   +3 more sources

Search for the Optimal Design of a Supercritical-CO2 Brayton Power Cycle from a Superstructure-Based Approach Implemented in a Commercial Simulation Software

open access: yesEnergies, 2023
Improving the efficiency and flexibility of fossil-fired power plants remains a current and challenging issue. In that regard, supercritical CO2 Brayton cycles offer promising potential. This paper aims to apply a process synthesis approach to the design
Qiao Zhao   +5 more
doaj   +1 more source

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