scholarly journals Photocatalytic Degradation and Selective Oxidation of Typical Gas Phase Molecules with TS-1 and HZSM-5 Zeolites

2013 ◽  
Vol 71 (10) ◽  
pp. 1404
Author(s):  
Rusheng Yuan ◽  
Shaolong Fan ◽  
Huaxi Zhou ◽  
Zhen Xu ◽  
Chen Lin ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Selective Oxidation ◽  
Gas Phase Molecules

VUV Photocatalytic Degradation of Toluene in the Gas Phase

2004 ◽  
Vol 33 (10) ◽  
pp. 1242-1243 ◽  
Author(s):  
Pengyi Zhang ◽  
Juan Liu ◽  
Zhongliang Zhang
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase

Photocatalytic degradation of trichloroethylene in the gas phase over TiO2 sol-gel films: Analysis of products

Chemosphere ◽  
1998 ◽  
Vol 36 (3) ◽  
pp. 483-495 ◽  
Author(s):  
Jong-Soon Kim ◽  
Kiminori Itoh ◽  
Masayuki Murabayashi
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Sol Gel ◽  
Tio2 Sol ◽  
Sol Gel Films

Optimization of C1-Oxygenates for the Selective Oxidation of Methane in a Gas-Phase Reaction of CH4−O2−NO at Atmospheric Pressure

2001 ◽  
Vol 15 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Tetsuya Takemoto ◽  
Kenji Tabata ◽  
Yonghong Teng ◽  
Shuiliang Yao ◽  
Akira Nakayama ◽  
...  
Keyword(s):  
Gas Phase ◽  
Selective Oxidation ◽  
Atmospheric Pressure ◽  
Phase Reaction ◽  
Gas Phase Reaction ◽  
Oxidation Of Methane

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.

Photocatalytic Degradation of Tetrachloroethylene in Gas Phase on TiO2Films:  A Kinetic Study

2005 ◽  
Vol 44 (16) ◽  
pp. 6075-6085 ◽  
Author(s):  
Gustavo E. Imoberdorf ◽  
Horacio A. Irazoqui ◽  
Alberto E. Cassano ◽  
Orlando M. Alfano
Keyword(s):  
Photocatalytic Degradation ◽  
Kinetic Study ◽  
Gas Phase

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...

The Effects of the Pre-treatments on the Photocatalytic Degradation of Trichloroethylene in the Gas-Phase

2002 ◽  
Vol 5 (1) ◽  
Author(s):  
Masayuki Murabayashi ◽  
Kiminori Itoh ◽  
Zhao Lian Hua ◽  
Kota Kitahara
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Pre Treatment

AbstractThe effects of pre-treatment of TiO

Use of Experimental Designs to Establish a Kinetic Law for a Gas Phase Photocatalytic Process

2014 ◽  
Vol 12 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Cécile Raillard ◽  
Audrey Maudhuit ◽  
Valérie Héquet ◽  
Laurence Le Coq ◽  
Jean Sablayrolles ◽  
...  
Keyword(s):  
Light Intensity ◽  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Photocatalytic Oxidation ◽  
Experimental Designs ◽  
Photocatalytic Process ◽  
Air Velocity ◽  
Kinetic Rate ◽  
Initial Concentration ◽  
Designs Of Experiments

Abstract The photocatalytic degradation of three common indoor VOCs – acetone, toluene and heptane – is investigated in a dynamic photocatalytic oxidation loop using Box–Behnken designs of experiments. Thanks to the experimental results and the establishment of a kinetic rate law based on a simplified mechanism, a predictive model for the VOC degradation involving independent factors is developed. The parameters under investigation are initial concentration, light intensity and air velocity through the photocatalytic medium. The obtained model fits properly the experimental curves in the range of concentration, light intensity and air flow studied.

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