scholarly journals Improved instrumentation to carry out surface analysis and to monitor chemical surface reactions in situ on small area catalysts over a wide pressure range (10−8–105 Torr)

1982 ◽  
Vol 53 (12) ◽  
pp. 1888-1893 ◽  
Author(s):  
A. L. Cabrera ◽  
N. D. Spencer ◽  
E. Kozak ◽  
P. W. Davies ◽  
G. A. Somorjai
Keyword(s):  
Surface Analysis ◽  
Small Area ◽  
Pressure Range ◽  
Surface Reactions ◽  
Chemical Surface ◽  
Wide Pressure Range ◽  
Wide Pressure

Study of physisorption isotherm of water on technical nickel surface with a wide pressure range

Vacuum ◽  
2017 ◽  
Vol 145 ◽  
pp. 123-127 ◽  
Author(s):  
Yanwu Li ◽  
Yongjun Cheng ◽  
Wenjun Sun ◽  
Yongjun Wang ◽  
Meng Dong ◽  
...  
Keyword(s):  
Pressure Range ◽  
Nickel Surface ◽  
Wide Pressure Range ◽  
Wide Pressure

Adsorption isotherms and kinetics of carbon dioxide on Chinese dry coal over a wide pressure range

Adsorption ◽  
2015 ◽  
Vol 21 (1-2) ◽  
pp. 53-65 ◽  
Author(s):  
Yongchen Song ◽  
Wanli Xing ◽  
Yi Zhang ◽  
Weiwei Jian ◽  
Zhaoyan Liu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Adsorption Isotherms ◽  
Pressure Range ◽  
Adsorption Isotherms And Kinetics ◽  
Wide Pressure Range ◽  
Kinetics Of ◽  
Wide Pressure

Verteilung und Valenz der Kationen in Spinellsystemen mit Eisen und Chrom, II. Zur Stöchiometrie des Spinells FeCr2O4 / Distribution and Valence of the Cations in Spinel Systems with Iron and Chromium, II. On the Stoichiometry of the Spinel FeCr2O4

1991 ◽  
Vol 46 (5) ◽  
pp. 653-661 ◽  
Author(s):  
Andreas Eggert ◽  
Erwin Riedel
Keyword(s):  
Pressure Range ◽  
Total Iron ◽  
X Ray ◽  
Partial Pressures ◽  
Wide Pressure Range ◽  
Wide Pressure ◽  
Additional Phase

FeCr2O4 has been prepared under CO-CO2-atmosphere with oxygen partial pressures between 10-18 and 10-8 bar. X-Ray and Mößbauer investigations show that under higher pressures FeCr2O4 is not stoichiometric but contains Fe(III), and that corund type Cr2O3 as an additional phase has been formed. In the wide pressure range from 10-17 to 10-14 bar the contents of Fe(III) are lower than 1% of total iron, and the corund phase is negligible.

Transparent Pressure Sensor with High Linearity over a Wide Pressure Range for 3D Touch Screen Applications

2020 ◽  
Vol 12 (14) ◽  
pp. 16691-16699 ◽  
Author(s):  
Han Byul Choi ◽  
Jinwon Oh ◽  
Youngsoo Kim ◽  
Mikhail Pyatykh ◽  
Jun Chang Yang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Pressure Range ◽  
Touch Screen ◽  
High Linearity ◽  
Wide Pressure Range ◽  
Wide Pressure

scholarly journals Quantitative gas composition analysis method for a wide pressure range up to atmospheric pressure—CO2 plasma case study

2020 ◽  
Vol 91 (11) ◽  
pp. 113501
Author(s):  
Ante Hecimovic ◽  
Federico D’Isa ◽  
Emile Carbone ◽  
Aleksander Drenik ◽  
Ursel Fantz
Keyword(s):  
Atmospheric Pressure ◽  
Pressure Range ◽  
Composition Analysis ◽  
Gas Composition ◽  
Analysis Method ◽  
Wide Pressure Range ◽  
Co2 Plasma ◽  
Wide Pressure

An in situ study of the phase transitions among CaCO3 high-pressure polymorphs

2018 ◽  
Vol 83 (02) ◽  
pp. 191-197 ◽  
Author(s):  
Xueyin Yuan ◽  
Chao Gao ◽  
Jing Gao
Keyword(s):  
Phase Transitions ◽  
Intermediate Phase ◽  
The Other ◽  
Three Samples ◽  
Short Period ◽  
Two Samples ◽  
Wide Pressure Range ◽  
Diamond Anvil ◽  
Wide Pressure

AbstractThe phase transitions involving calcite (CaCO3-I), CaCO3-II, CaCO3-III and CaCO3-IIIb were investigated using a diamond anvil cell and micro-Raman spectroscopy. Based on the results obtained from in situ observations and Raman measurements made with six natural calcite crystals, the phase transition from calcite to CaCO3-II took place between 1.56 and 1.67 GPa under ambient temperature. Under a precise pressure of 1.97 ± 0.03 GPa, three CaCO3 samples were observed to transform from CaCO3-II directly to CaCO3-III, while in the other three samples both CaCO3-III and CaCO3-IIIb crystal structures were detected. Transformation from CaCO3-IIIb to CaCO3-III was completed in a short period in one sample, whereas in the other two samples coexistence of CaCO3-III and CaCO3-IIIb was observed over a wide pressure range from 1.97 to 3.38 GPa, with sluggish transformation from CaCO3-IIIb to CaCO3-III being observed after the samples were preserved under 3.38 GPa for 72 h. Hence, it can be concluded that CaCO3-IIIb is a metastable intermediate phase occurring during the reconstructive transformation from CaCO3-II to CaCO3-III. Splitting of the C–O in-plane bending (ν4) and symmetric stretching (ν1) vibrations and appearance of new lattice vibrations in the Raman spectra of CaCO3-III and CaCO3-IIIb suggest a lowering in crystal symmetry during the transformation from CaCO3-II through CaCO3-IIIb to CaCO3-III, which is in good agreement with the observed sequence of phase symmetries.

scholarly journals Innenrücktitelbild: High Ammonia Uptake of a Metal–Organic Framework Adsorbent in a Wide Pressure Range (Angew. Chem. 50/2020)

2020 ◽  
Vol 132 (50) ◽  
pp. 22991-22991
Author(s):  
Dae Won Kim ◽  
Dong Won Kang ◽  
Minjung Kang ◽  
Jung‐Hoon Lee ◽  
Jong Hyeak Choe ◽  
...  
Keyword(s):  
Pressure Range ◽  
Metal Organic Framework ◽  
Ammonia Uptake ◽  
High Ammonia ◽  
Wide Pressure Range ◽  
Metal Organic ◽  
Wide Pressure ◽  
Organic Framework
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