Results 131 to 140 of about 851,010 (251)

Effect of Vacuum Process on Enrichment of Low-Concentration Coal Mine Methane by Adsorption

Separations
The massive emission of low-concentration coal mine methane (CMM) has resulted in the ineffective utilization of a large amount of energy methane and caused environmental pollution.
Yuanyuan Kang, Yingshu Liu, Wenhai Liu, Ye Li, Ningqi Sun, Quanli Zhang, Ziyi Li, Xiong Yang   +7 more
doaj   +1 more source

High‐Pressure Chemical Vapor Deposition Growth of Transition Metal Dichalcogenides With Minimized Sulfur Vacancies

National Materials, EarlyView.
High‐pressure chemical vapor deposition at 3800 torr elevates the sulfur chemical potential during MoS2 growth, suppressing sulfur‐vacancy formation. This thermodynamic control yields MoS2 with defect densities comparable to those of exfoliated crystals, enhanced crystallinity, uniform defect distribution, and improved electronic transport properties ...
Takmo Jeong, Bumsub Song, Bong Gyu Shin, Jae Woo Kim, Sang‐Hyeok Yang, Young‐Min Kim, Ki Kang Kim, Young Hee Lee, Seok Joon Yun   +8 more
wiley   +1 more source

Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation

Separations
A five-bed, seven-step vacuum pressure swing adsorption (VPSA) system was computationally modeled to assess carbon monoxide (CO) separation from CO/N2 mixed gas (30/70, v/v). Two adsorbents with distinct isotherm characteristics (steep-slope CuCl/NaY and
Congli Li, Xuling Guo, Lei Tang, Jiahui Yang, Qi Shi   +4 more
doaj   +1 more source

Vibrational Exfoliation of 2D Materials

Small, EarlyView.
Vibrational energy folds, fractures and exfoliates atomically and molecularly thin materials. Combining experimentation and computational methods, this unique vibrational synthesis pathway is revealed. This process overcomes barriers of existing approaches by processing 1000 g/L dispersions without loss in yield.
Aadam Rabani, Faysal A. Khaleel, Fahad S. Al‐Gburi, Irwing Ramirez, Tomislav Friščić, Jason Stafford   +5 more
wiley   +1 more source

Application of Vacuum Swing Adsorption for Carbon Dioxide and Water Vapor Removal from Manned Spacecraft Atmospheres

, 2007
The design and testing of a vacuum-swing adsorption process to remove metabolic 'water and carbon dioxide gases from NASA's Orion crew exploration vehicle atmosphere is presented.
Levan, M., Ritter, J., Howard, D., Knox, J., Fulda, P.   +4 more
core  

CO2 capture in pilot-scale unit using solid adsorbent in biomass fluidised bed boiler flue gas

Acta Polytechnica
The search for methods to capture carbon dioxide (CO2) emissions from solid fuel combustion processes has led to the development and subsequent testing of alternative innovative CO2 capture technologies. Vacuum Pressure Swing Adsorption (VPSA) method is
Michael Dvořák, Jan Hrdlička, Lukáš Pilař, Pavel Skopec, Jiří Burda   +4 more
doaj   +1 more source

Optimization of hydrogen purification via vacuum pressure swing adsorption

Energy Conversion and Management: X, 2023
Wei-Hsin Chen, Wei-Hao Chen, Rei-Yu Chein, Anh Tuan Hoang, Kanit Manatura, Salman Raza Naqvi   +5 more
openaire   +1 more source

Rounded Monodisperse Fluorescent Nanodiamonds

Small, EarlyView.
Nanodiamond (ND) shape control using rapid molten‐nitrate etching is studied as a scale‐up method for monodispersed rounded particles. Optimal etching condition (567°C for 6 min) yields NDs with atomically stepped surfaces and reduced sp2 content. Compared to angular control, rounded NDs exhibit an increased proportion of luminescent particles (66% vs.
Helena Raabova, Ivan Rehor, Jan Havlik, Stuart Turner, Jan Stursa, Vladimira Petrakova, Michal Gulka, Petr Cigler   +7 more
wiley   +1 more source

Assessment of the energy consumption of the biogas upgrading process with pressure swing adsorption using novel adsorbents

, 2015
Biogas consisting mainly of methane and carbon dioxide can be utilized as renewable energy source in combined heat and power plant, vehicle fuel, or substitute for natural gas after upgrading process.
Zhang, Xiangping, Wu, Bin, Xu, Yajing, Zhang, Suojiang, Bao, Di   +4 more
core   +1 more source

More Photocatalysis With Less Light in Polar Semiconductors—The Role of Pyroelectric Fields

Small, EarlyView.
The work demonstrates that the modulated solar irradiation enhances the photocatalytic degradation of methyl orange on BaTiO3 despite reducing the photon flux by about 50%, resulting in a net overcompensation of catalytic efficiency. The effect arises from pyroelectric polarization near the phase transition, triggered by infrared heating of water ...
Balasurya Senthilmurugan, Amira Becheikh, Mohammad Bakhtbidar, Aparna Kharade, Daniel Gueckelhorn, Fiorenzo Vetrone, Andreas Ruediger   +6 more
wiley   +1 more source