The Separation of Organic Vapors from Gas Streams by Means of Membranes

2006 ◽  
pp. 91-117
Author(s):  
K. Ohlrogge ◽  
K. Stürken
Keyword(s):  
Organic Vapors ◽  
Gas Streams

Etching of Polymers by Oxygen Plasma

1968 ◽  
Vol 26 ◽  
pp. 408-409
Author(s):  
Virgil Peck ◽  
W. L. Carter
Keyword(s):  
Molecular Weight ◽  
Oxygen Plasma ◽  
Flow Time ◽  
Microscopical Study ◽  
Surface Layers ◽  
Organic Vapors ◽  
Sample Position ◽  
Accuracy Of Measurement ◽  
Bulk Polymers ◽  
Electron Microscopical

Any electron microscopical study of the morphology of bulk polymers has throughout the years been hampered by the lack of any real ability to produce meaningful surface variations for replication. True etching of polymers should show crystalline and amorphous regions in some form of relief. The use of solvents, acids, organic vapors, and inert ion bombardment to etch samples has proved to be useful only in limited applications. Certainly many interpretations of these results are subject to question.The recent use of a radiofrequency (R. F.) plasma of oxygen to degrade and remove organic material with only minor heating has opened a new possibility for etching polymers. However, rigid control of oxygen flow, time, current, and sample position are necessary in order to obtain reproducible results. The action is confined to surface layers; the molecular weight of the polymer residue after heavy etching is the same as the molecular weight of the polymer before attack, within the accuracy of measurement.

The effects of organic vapors on neurocognitive measures and eye tracking among gas station workers.

2020 ◽  
Vol 13 (2) ◽  
pp. 176-186
Author(s):  
Armindo A. Campos Neto ◽  
Michael Jackson Oliveira Andrade ◽  
Ana Raquel Oliveira ◽  
Carine M. R. Costa ◽  
Natanael Antonio Santos
Keyword(s):  
Eye Tracking ◽  
Organic Vapors ◽  
Gas Station ◽  
Neurocognitive Measures

Catalytic Hydrocracking of Synthetic Polymers into Grid-Compatible Gas Streams

2020 ◽  
Author(s):  
Wei-Tse Lee ◽  
Felix D. Bobbink ◽  
Antoine P. van Muyden ◽  
Kun-Han Lin ◽  
Clémence Corminboeuf ◽  
...  
Keyword(s):  
Synthetic Polymers ◽  
Gas Streams

scholarly journals Porous MOF-808@PVDF beads for removal of iodine from gas streams

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 44679-44687
Author(s):  
Lingyu Wang ◽  
Peng Chen ◽  
Xiuting Dong ◽  
Wen Zhang ◽  
Song Zhao ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Gas Streams ◽  
Composite Beads ◽  
Iodine Adsorption

Porous millimeter-sized MOF-808@PVDF composite beads with ultrahigh iodine adsorption capacity for capture of radioiodine from gas streams.

Corrosion Problems in a Refinery Diethanolamine System

CORROSION ◽  
1960 ◽  
Vol 16 (10) ◽  
pp. 503t-506t ◽  
Author(s):  
KENNETH L. MOORE
Keyword(s):  
Hydrogen Sulfide ◽  
Electrical Resistance ◽  
System Operation ◽  
Measuring Device ◽  
Acid Gas ◽  
Gas Streams ◽  
The Rich ◽  
The Relationship ◽  
Refinery Gas ◽  
Propane Butane

Abstract Various corrosion problems are described which have occurred in a large diethanolamine (DEA) system that removes hydrogen sulfide from refinery gas streams and a liquid propane-butane stream. These include reboiler corrosion, rich DEA corrosion, stress corrosion cracking, and corrosion-erosion. The effect of the problems on system operation is discussed, as well as the means of minimizing the problems. Electrical resistance measuring device data indicate the importance of keeping the solution loading below 0.34 mol of acid gas (H2S + CO2) per mol of DEA to minimize the corrosion in the rich DEA. Data from this source also show the relationship between general reboiler corrosion and solution contamination. 8.4.3

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