Adsorption and reaction pathways of a chiral probe molecule, S-glycidol on a Pd(111) surface

2015 ◽  
Vol 5 (2) ◽  
pp. 738-742 ◽  
Author(s):  
Mausumi Mahapatra ◽  
Wilfred T. Tysoe
Keyword(s):  
Infrared Spectroscopy ◽  
Reaction Pathway ◽  
Temperature Programmed Desorption ◽  
Reaction Pathways ◽  
Probe Molecule ◽  
Reflection Absorption Infrared Spectroscopy ◽  
Temperature Programmed

The chemistry of S-glycidol is studied on a Pd(111) surface using temperature-programmed desorption and reflection–absorption infrared spectroscopy to explore its suitability as a chiral probe molecule and to follow its reaction pathway.

KINETIC AND REACTIVE PROPERTIES OF ETHYLENE ON CLEAN AND HYDROGEN-COVERED Pd(111)

2003 ◽  
Vol 10 (06) ◽  
pp. 909-916 ◽  
Author(s):  
L. BURKHOLDER ◽  
D. STACCHIOLA ◽  
W. T. TYSOE
Keyword(s):  
Activation Energy ◽  
Infrared Spectroscopy ◽  
Temperature Programmed Desorption ◽  
Molecular Adsorption ◽  
Lateral Interactions ◽  
Ethylene Adsorption ◽  
Reflection Absorption Infrared Spectroscopy ◽  
Temperature Programmed ◽  
Ethane Formation ◽  
Reactive Properties

Several molecular adsorption states are identified following ethylene adsorption on clean and hydrogen-covered Pd(111) using temperature-programmed desorption (TPD) and reflection absorption infrared spectroscopy (RAIRS). Di-σ-bonded ethylene forms on clean Pd(111) desorbing with an activation energy of 80 kJ/mol at low coverages. The strong intermolecular lateral interactions considerably reduce the desorption temperature at higher coverages. Π-bonded ethylene is formed on hydrogen-covered Pd(111), where the proportion of π-bonded species increases with hydrogen coverage. This species converts to the more stable di-σ-bonded species on heating. Ethane formation is detected in TPD from hydrogen-precovered Pd(111), which is predominantly formed by reaction with π-bonded ethylene.

Propane and propane–water interactions: a study at cryogenic temperatures

2018 ◽  
Vol 20 (3) ◽  
pp. 1838-1847 ◽  
Author(s):  
Jyotirmoy Ghosh ◽  
Annapoorani Kobuvayur Hariharan ◽  
Radha Gobinda Bhuin ◽  
Rabin Rajan J. Methikkalam ◽  
Thalappil Pradeep
Keyword(s):  
Mass Spectrometry ◽  
Phase Transition ◽  
Infrared Spectroscopy ◽  
Ultrahigh Vacuum ◽  
Temperature Programmed Desorption ◽  
Water Mixture ◽  
Cryogenic Temperatures ◽  
Desorption Mass Spectrometry ◽  
Reflection Absorption Infrared Spectroscopy ◽  
Temperature Programmed

The phase transition of solid propane and a propane–water mixture under ultrahigh vacuum has been investigated using reflection absorption infrared spectroscopy (RAIRS) and temperature-programmed desorption mass spectrometry (TPD-MS).

scholarly journals Impact of oxygen chemistry on model interstellar grain surfaces

2018 ◽  
Vol 20 (8) ◽  
pp. 5368-5376 ◽  
Author(s):  
A. Rosu-Finsen ◽  
M. R. S. McCoustra
Keyword(s):  
Infrared Spectroscopy ◽  
Molecular Oxygen ◽  
Amorphous Silica ◽  
Amorphous Solid ◽  
Temperature Programmed Desorption ◽  
Crystalline Solid ◽  
Amorphous Solid Water ◽  
Reflection Absorption Infrared Spectroscopy ◽  
Solid Water ◽  
Temperature Programmed

Temperature-programmed desorption (TPD) and reflection–absorption infrared spectroscopy (RAIRS) are used to probe the effect of atomic and molecular oxygen (O and O2) beams on amorphous silica (aSiO2) and water (H2O) surfaces (porous-amorphous solid water; p-ASW, compact amorphous solid water; c-ASW, and crystalline solid water; CSW).

The Characterization of Hydrocarbon Intermediates in H-ZSM-5

1987 ◽  
Vol 111 ◽  
Author(s):  
T. J. Gricus Kofke ◽  
R. J. Gorte ◽  
W. E. Farneth
Keyword(s):  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Acid Site ◽  
Adsorbed Molecule ◽  
Temperature Programmed Desorption ◽  
Acid Sites ◽  
Adsorption State ◽  
Brönsted Acid ◽  
Temperature Programmed

AbstractWe have examined the adsorption of simple alcohols and 2-propanamine on H-ZSM-5 zeolites with Si/Al2 ratios between 38 and 520. Thermogravimetric analysis (TGA) demonstrated that most of the molecules display a clearly defined adsorption state corresponding to a coverage of one molecule per Al site. Temperature programmed desorption (TPD) and transmission infrared spectroscopy results for each of the molecules in this 1:1 adsorption state are consistent with adsorption being due to the transfer of a proton from the zeolite to the adsorbed molecule. These results provide additional evidence that carefully prepared H-ZSM-5 is a Bronsted acid, with one acid site per framework Al atom, in which all of the acid sites are identical in strength.

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