ChemInform Abstract: Surface Catalytic Reactions Assisted by Gas-Phase Molecules

ChemInform ◽  
2010 ◽  
Vol 28 (27) ◽  
pp. no-no
Author(s):  
Y. IWASAWA
Keyword(s):  
Gas Phase ◽  
Catalytic Reactions ◽  
Gas Phase Molecules

Surface catalytic reactions assisted by gas phase molecules: activation of reaction intermediates

2000 ◽  
Vol 163 (1-2) ◽  
pp. 67-77 ◽  
Author(s):  
Takafumi Shido ◽  
Aritomo Yamaguchi ◽  
Kiyotaka Asakura ◽  
Yasuhiro Iwasawa
Keyword(s):  
Gas Phase ◽  
Catalytic Reactions ◽  
Reaction Intermediates ◽  
Gas Phase Molecules

scholarly journals Rapid compressions in a captive bubble apparatus are isothermal

2003 ◽  
Vol 95 (5) ◽  
pp. 1896-1900
Author(s):  
Wenfei Yan ◽  
Stephen B. Hall
Keyword(s):  
Hydrostatic Pressure ◽  
Gas Phase ◽  
Pulmonary Surfactant ◽  
First Order ◽  
First Order Kinetics ◽  
Gas Phase Molecules ◽  
Actual Change ◽  
Phase Temperature ◽  
Two Phases ◽  
Interfacial Films

Captive bubbles are commonly used to determine how interfacial films of pulmonary surfactant respond to changes in surface area, achieved by varying hydrostatic pressure. Although assumed to be isothermal, the gas phase temperature (Tg) would increase by >100°C during compression from 1 to 3 atm if the process were adiabatic. To determine the actual change in temperature, we monitored pressure (P) and volume (V) during compressions lasting <1 s for bubbles with and without interfacial films and used P · V to evaluate Tg. P · V fell during and after the rapid compressions, consistent with reductions in n, the moles of gas phase molecules, because of increasing solubility in the subphase at higher P. As expected for a process with first-order kinetics, during 1 h after the rapid compression P · V decreased along a simple exponential curve. The temporal variation of n moles of gas was determined from P · V >10 min after the compression when the two phases should be isothermal. Back extrapolation of n then allowed calculation of Tg from P · V immediately after the compression. Our results indicate that for bubbles with or without interfacial films compressed to >3 atm within 1 s, the change in Tg is <2°C.

Computational UV Spectra for Amorphous Solids of Small Molecules

2021 ◽  
Author(s):  
Austin Michael Wallace ◽  
Ryan C. Fortenberry
Keyword(s):  
Carbon Dioxide ◽  
Interstellar Medium ◽  
Small Molecules ◽  
Gas Phase ◽  
Amorphous Solids ◽  
Uv Spectra ◽  
Ammonia Water ◽  
Gas Phase Molecules ◽  
High Level

Ices in the interstellar medium largely exist as amorphous solids composed of small molecules including ammonia, water, and carbon dioxide. Describing gas-phase molecules can be readily accomplished with current high-level...

Integrated Microreactor System for Gas-Phase Catalytic Reactions. 1. Scale-up Microreactor Design and Fabrication

2007 ◽  
Vol 46 (25) ◽  
pp. 8292-8305 ◽  
Author(s):  
D. J. Quiram ◽  
K. F. Jensen ◽  
M. A. Schmidt ◽  
P. L. Mills ◽  
J. F. Ryley ◽  
...  
Keyword(s):  
Gas Phase ◽  
Scale Up ◽  
Catalytic Reactions
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