Results 31 to 40 of about 647,302 (336)

Balancing hydrogen adsorption/desorption by orbital modulation for efficient hydrogen evolution catalysis

Nature Communications, 2019
Hydrogen adsorption/desorption behavior plays a key role in hydrogen evolution reaction (HER) catalysis. The HER reaction rate is a trade-off between hydrogen adsorption and desorption on the catalyst surface.
Feng Li, Gao-Feng Han, Hyuk-Jun Noh, Jong‐Pil Jeon, Ishfaq Ahmad, Shanshan Chen, Changduk Yang, Yunfei Bu, Z. Fu, Yalin Lu, Jong‐Beom Baek   +10 more
semanticscholar   +1 more source

Photodesorption of CO ice [PDF]

, 2007
At the high densities and low temperatures found in star forming regions, all molecules other than H2 should stick on dust grains on timescales shorter than the cloud lifetimes. Yet these clouds are detected in the millimeter lines of gaseous CO.
Ewine F. van Dishoeck, Guido W. Fuchs, Harold Linnartz, Hartquist T. W., Helen J. Fraser, Karin I. Öberg, Leger A., Stephan Schlemmer, Zainab Awad   +8 more
core   +2 more sources

Thermal desorption of ammonia from crystalline forsterite surfaces

, 2015
The thermal desorption of ammonia (NH$_3$) from single crystal forsterite (010) has been investigated using temperature-programmed desorption. The effect of defects on the desorption process has been probed by the use of a rough cut forsterite surface ...
Suhasaria, T., Thrower, J. D., Zacharias, H.   +2 more
core   +1 more source

Separation Properties of Plasmid DNA Using a Two-Stage Particle Adsorption-Microfiltration Process

Membranes, 2023
Plasmid DNA is used as a vector for gene therapy and DNA vaccination; therefore, the establishment of a mass production method is required. Membrane filtration is widely employed as a separation method suitable for the mass production of plasmid DNA ...
Nobuyuki Katagiri, Daisuke Shimokawa, Takayuki Suzuki, Masahito Kousai, Eiji Iritani   +4 more
doaj   +1 more source

Adsorption, desorption, resorption

Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1963
The complete characterization of batch adsorption from solution, desorption, and related phenomena have been interpreted in the light of a general equation. The forward and reverse adsorption-rate constants and the adsorptive capacity comprise the only parameters. Where adsorption alone is of importance and the desorption-rate constant can be neglected,
openaire   +2 more sources

Determination of NH4+ and NO3- Adsorption and Desorption Capacities of Biochars Produced at Different Temperatures

Turkish Journal of Agriculture: Food Science and Technology
This study investigates the adsorption and desorption capacities of corn cob biochars produced at three different pyrolysis temperatures. Adsorption experiments were conducted using ammonium (NH4+) and nitrate (NO3-) solutions at concentrations 5, 10, 25,
Cabir Çağrı Gence, Halil Erdem
doaj   +1 more source

Molecular simulation of rapid translocation of cholesterol, diacylglycerol, and ceramide in model raft and nonraft membranes

Journal of Lipid Research, 2012
The translocation of lipids across membranes (flip-flop) is an important biological process. Slow exchange on a physiological timescale allows the creation of asymmetric distributions of lipids across cellular membranes.
W. F. Drew Bennett, D. Peter Tieleman
doaj   +1 more source

Photo-desorption of H2O:CO:NH3 circumstellar ice analogs: Gas-phase enrichment [PDF]

, 2018
We study the photo-desorption occurring in H$_2$O:CO:NH$_3$ ice mixtures irradiated with monochromatic (550 and 900 eV) and broad band (250--1250 eV) soft X-rays generated at the National Synchrotron Radiation Research Center (Hsinchu, Taiwan). We detect
Caro, G. M. Munoz, Cecchi-Pestellini, C., Chen, Y. -J., Ciaravella, A., Huang, C. -H., Jimenez-Escobar, A., Sie, N. -E.   +6 more
core   +2 more sources

Preparation and Testing of Polyethylenimine-Impregnated Silica Gel for CO₂ Capture

Gels
This work studied the low-temperature sorption of carbon dioxide on impregnated silica gel. An impregnating agent was used polyethyleneimine. The content of the impregnating agent in the silica gel matrix was 33.4 wt.%.
Veronika Kyselová, Jakub Havlín, Karel Ciahotný   +2 more
doaj   +1 more source

Heat-Integrated Liquid–Desorption Exchanger (HILDE) for CO2 Desorption

Energy Procedia, 2016
AbstractA novel type of separating heat exchanger, called a heat-integrated liquid−desorption exchanger (HILDE), applied to a typical CO2 desorption process, has been investigated both numerically and experimentally. Process simulations, hydrodynamic and mass transfer experiments, and a preliminary cost evaluation have been used to compare HILDE to the
Ham, L.V. van der, Khakharia, P.M., Goetheer, E.L.V.   +2 more
openaire   +2 more sources