scholarly journals Conformational Transformations of Sulfur-Containing Rings: 2-Methyltetrahydrothiophene Gas-Phase Structures

ChemPhysChem ◽  
2014 ◽  
Vol 16 (2) ◽  
pp. 291-294 ◽  
Author(s):  
Vinh Van ◽  
Christina Dindic ◽  
Ha Vinh Lam Nguyen ◽  
Wolfgang Stahl
Keyword(s):  
Gas Phase ◽  
Phase Structures ◽  
Conformational Transformations ◽  
Sulfur Containing

scholarly journals Conformational Transformations of Sulfur-Containing Rings: 2-Methyltetrahydrothiophene Gas-Phase Structures

ChemPhysChem ◽  
2015 ◽  
Vol 16 (2) ◽  
pp. 265-265
Author(s):  
Vinh Van ◽  
Christina Dindic ◽  
Ha Vinh Lam Nguyen ◽  
Wolfgang Stahl
Keyword(s):  
Gas Phase ◽  
Phase Structures ◽  
Conformational Transformations ◽  
Sulfur Containing

Sulfur-Containing Flavors: Gas Phase Structures of Dihydro-2-methyl-3-thiophenone

2013 ◽  
Vol 117 (30) ◽  
pp. 6652-6656 ◽  
Author(s):  
Halima Mouhib ◽  
Vinh Van ◽  
Wolfgang Stahl
Keyword(s):  
Gas Phase ◽  
Phase Structures ◽  
Sulfur Containing

The gas-phase structures of perfluoroquinolizidine and perfluorotripropylamine

1989 ◽  
Vol 197 ◽  
pp. 329-338 ◽  
Author(s):  
Hans-Georg Mack ◽  
Heinz Oberhammer
Keyword(s):  
Gas Phase ◽  
Phase Structures

Gas-phase structures of ethynyl- and vinyl pentafluorosulfur derivatives: an electron diffraction and microwave spectroscopy study

1991 ◽  
Vol 249 (2-4) ◽  
pp. 285-295 ◽  
Author(s):  
Petra Zylka ◽  
Dines Christen ◽  
Heinz Oberhammer ◽  
Gary L. Gard ◽  
R.J. Terjeson
Keyword(s):  
Electron Diffraction ◽  
Gas Phase ◽  
Microwave Spectroscopy ◽  
Spectroscopy Study ◽  
Phase Structures

The (p-d) .pi. bonding in fluorosilanes? Gas-phase structures of (CH3)4-nSiFn with n = 1-3 and of (tert-Bu)2SiF2

1986 ◽  
Vol 108 (14) ◽  
pp. 3893-3897 ◽  
Author(s):  
Beate. Rempfer ◽  
Heinz. Oberhammer ◽  
Norbert. Auner
Keyword(s):  
Gas Phase ◽  
Phase Structures

scholarly journals New Gas-Phase Catalytic Oxidative Processes for Desulfurization of Diesel Fuel

2015 ◽  
Vol 17 (2) ◽  
pp. 119 ◽  
Author(s):  
Z.R. Ismagilov ◽  
M.A. Kerzhentsev ◽  
S.A. Yashnik ◽  
S.R. Khairulin ◽  
A.V. Salnikov ◽  
...  
Keyword(s):  
Gas Phase ◽  
Diesel Fuel ◽  
Ambient Pressure ◽  
Oxidative Desulfurization ◽  
Sulfur Compounds ◽  
Deep Desulfurization ◽  
Oxidative Processes ◽  
Laboratory Reactor ◽  
Sulfur Containing ◽  
Regeneration Processes

<p>An effective gas-phase oxidative desulfurization (ODS) process was proposed. The process was studied in a laboratory reactor with a proprietary catalyst at 300-400 ºС and ambient pressure with model fuels represented by thiophene, dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) dissolved in octane, isooctane or toluene. The reactivity of different sulfur containing molecules in ODS was shown to increase in the sequence: thiophene &lt; DBT &lt; DMDBT. The main sulfur containing product of oxidation of these compounds was SO<sub>2</sub>. During the gas-phase ODS both processes of sulfur species oxidation and processes of their adsorption were observed and studied. Based on the conducted studies, different ODS process designs comprising its integration with adsorption and regeneration processes and with conventional hydrodesulfurization (HDS) process were proposed. One scheme is based on alternating regimes of ODS and catalyst regeneration in two reactors: sulfur is removed from organic feedstock by oxidation and adsorption in one reactor while simultaneous regeneration of the catalyst that has accumulated sulfur  compounds takes place in another reactor. Two other schemes are based on joint use of ODS and HDS. The conventional HDS process is most effective for removal of low-boiling sulfur containing compounds reactive with respect to hydrogen, while removal of refractory sulfur compounds, such as DMDBT is more easily achieved by gas phase ODS. Thus the combination of these processes is expected to be most efficient for deep desulfurization of diesel fuel.</p>

scholarly journals Compaction of RNA Hairpins and Their Kissing Complexes in Native Electrospray Mass Spectrometry

2020 ◽  
Author(s):  
Joséphine Abi-Ghanem ◽  
Clémence Rabin ◽  
Massimiliano Porrini ◽  
Frédéric Rosu ◽  
Valerie Gabelica
Keyword(s):  
Mass Spectrometry ◽  
Molecular Dynamics ◽  
Gas Phase ◽  
Electrospray Mass Spectrometry ◽  
Initial Structure ◽  
Native Solution ◽  
Phase Structures ◽  
Rna Hairpins ◽  
Level Calculation ◽  
Structure In Solution

When electrosprayed from native solution conditions, RNA hairpins and kissing complexes acquire charge states at which they get significantly more compact in the gas phase than their initial structure in solution. Here we show the limits of using force field molecular dynamics to interpret the gas-phase structures of nucleic acid complexes in the gas phase, and we suggest that higher-level calculation levels should be used in the future.<br>

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