Results 31 to 40 of about 3,644,479 (283)

Supercritical Synthesis and Characterization of Graphene–PbS Quantum Dots Composite with Enhanced Photovoltaic Properties

, 2015
Lead sulfide quantum dots (PbS QDs) were decorated onto a graphene surface in a semi-core–shell structure using supercritical ethanol. The temperature of ethanol played significant role in controlling size and agglomeration of QDs as well as the extent ...
A. Tayyebi, M. Tavakoli, M. Outokesh, A. Shafiekhani, A. Simchi   +4 more
semanticscholar   +1 more source

Decoding the N-doping mechanism for enhanced CO2 adsorption on biochar

Carbon Capture Science & Technology
The growing demand for efficient carbon capture technologies has led to the exploration of biochar as a promising material for CO2 adsorption, particularly through modifications such as nitrogen doping to enhance its performance.
Shuo Xiang, Jun-Long Li, Tie Wu, Lian-Peng Li, Mian Hu, Jun Zhao, Zhong-Ting Hu, Zhiyan Pan   +7 more
doaj   +1 more source

Process Synthesis of an S-CO₂Brayton Cycle Operating at an Ultra-Supercritical Steam Cycle Level

Chemical Engineering Transactions, 2019
Supercritical CO2 (S-CO2) Brayton cycle perceives the advantages of high cycle efficiency and compact turbine machinery. In certain temperature ranges, its cycle efficiency can be higher than that of a steam Rankine cycle.
Senjing Qin, Pei Liu
doaj   +1 more source

Continuous Flow Synthesis of Nanoparticles Using Supercritical Water: Process Design, Surface Control, and Nanohybrid Materials

Kona : Powder and Particle, 2020
A continuous flow reaction process in which a metal salt solution is rapidly mixed with high-temperature water was employed to achieve rapid heating up to supercritical conditions.
A. Yoko, G. Seong, T. Tomai, T. Adschiri
semanticscholar   +1 more source

Supercritical water synthesis of nano-particle catalyst on TiO2 and its application in supercritical water gasification of biomass

Journal of Experimental Nanoscience, 2017
Hydrogen production by catalytic gasification in supercritical water (SCW) is a promising way to utilise biomass resource. Supercritical water not only provides homogeneous and rapid reaction environment for the biomass gasification but also causes ...
Hui Jin, Xiao Zhao, Zhenqun Wu, Changqing Cao, Liejin Guo   +4 more
doaj   +1 more source

A novel spiral infinity reactor for continuous hydrothermal synthesis of nanoparticles

Scientific Reports, 2022
Hydrothermal synthesis is an attractive route to make nanoparticles utilizing inexpensive precursors under moderate process conditions. Though it provides flexibility and robustness in controlling particle characteristics, process scale-up for continuous
Arjun Kumar Pukkella, Naga Ravikumar Varma Nadimpalli, Venkataramana Runkana, Sivakumar Subramanian   +3 more
doaj   +1 more source

Process intensification for the synthesis of ultra-small organic nanoparticles with supercritical CO2 in a microfluidic system

Chemical Engineering Journal, 2020
Submicronization of organic compounds is a challenging requirement for applications in the imaging and pharmaceutical fields. A new Supercritical AntiSolvent process with microreactor (µSAS) was developed for nanoparticle (NP) synthesis. Tetrahydrofuran (
T. Jaouhari, Fan Zhang, T. Tassaing, S. Féry-Forgues, C. Aymonier, S. Marre, A. Erriguible   +6 more
semanticscholar   +1 more source

Urea-derived Cu/ZnO catalyst being dried by supercritical CO2 for low-temperature methanol synthesis

Fuel, 2020
Methanol synthesis from syngas is a crucial process in the transformation of coal, natural gas and biomass into high-value added products. The high CO conversion and methanol yield are challenging in low-temperature methanol synthesis, thus improving ...
Peipei Zhang, Y. Araki, Xiaobo Feng, Hangjie Li, Yuan Fang, Fei Chen, Lei Shi, Xiaobo Peng, Y. Yoneyama, Guohui Yang, N. Tsubaki   +10 more
semanticscholar   +1 more source

Highly Effective Schungite-Based Catalyst for Deoxygenation of Biomass Components

Chemical Engineering Transactions, 2021
Nowadays, the processes for the conversion of biomass to fuels are of great interest. One of the widely studied reactions is the deoxygenation of oxygen-containing compounds.
Antonina A. Stepacheva, Mariia E. Markova, Elena O. Schipanskaya, Valentina G. Matveeva, Mikhail G. Sulman   +4 more
doaj   +1 more source

Critical and supercritical fatty amide synthesis

Chemical Engineering Communications, 2022
The surface activity of fatty amide surfactants synthesized under three different conditions are presented. Three reaction conditions, involving transesterification and amidation reactions, were performed. In the first condition, both reactions were conducted under environmental conditions.
Miguel Gonzalo Arenas-Quevedo, Andrés Adolfo Velasco-Medina, Jesús Gracia-Fadrique   +2 more
openaire   +1 more source