The Exchange of Energy Between Organic Molecules and Solid Surfaces Part I. Accommodation Coefficients and Specific Heats of Hydrocarbon Molecules

1936 ◽  
Vol 4 (10) ◽  
pp. 680-689 ◽  
Author(s):  
Otto Beeck
Keyword(s):  
Organic Molecules ◽  
Solid Surfaces ◽  
Specific Heats ◽  
Accommodation Coefficients ◽  
Hydrocarbon Molecules

ChemInform Abstract: THE REACTION OF ORGANIC MOLECULES ON SOLID SURFACES. 2. AN EFFICIENT METHOD FOR THE PREPARATION OF DEUTERATED ALUMINA

1985 ◽  
Vol 16 (31) ◽  
Author(s):  
K. GAETANO ◽  
R. M. PAGNI ◽  
G. W. KABALKA ◽  
P. BRIDWELL ◽  
E. WALSH ◽  
...  
Keyword(s):  
Efficient Method ◽  
Organic Molecules ◽  
Solid Surfaces

scholarly journals Photoinduced C–H bond fission in prototypical organic molecules and radicals

2019 ◽  
Vol 21 (26) ◽  
pp. 13880-13901 ◽  
Author(s):  
Michael N. R. Ashfold ◽  
Rebecca A. Ingle ◽  
Tolga N. V. Karsili ◽  
Jingsong Zhang
Keyword(s):  
Organic Molecules ◽  
Current Knowledge ◽  
Primary Photochemistry ◽  
Hydrocarbon Molecules

We survey and assess current knowledge regarding the primary photochemistry of hydrocarbon molecules and radicals.

The reaction of organic molecules on solid surfaces. 1. The facile deuteration of active methylene compounds with water-d2-treated alumina

1981 ◽  
Vol 46 (7) ◽  
pp. 1513-1514 ◽  
Author(s):  
George W. Kabalka ◽  
Richard M. Pagni ◽  
Paula Bridwell ◽  
Elaine Walsh ◽  
Hamdi M. Hassaneen
Keyword(s):  
Organic Molecules ◽  
Solid Surfaces ◽  
Active Methylene Compounds ◽  
Active Methylene

A quantum mechanical theory of energy exchanges between inert gas atoms and a solid surface

1932 ◽  
Vol 28 (1) ◽  
pp. 136-164 ◽  
Author(s):  
J. M. Jackson
Keyword(s):  
Solid Surface ◽  
Accommodation Coefficient ◽  
Solid Surfaces ◽  
Order Unity ◽  
True Value ◽  
A Value ◽  
Quantum Mechanical Theory ◽  
Different Temperatures ◽  
Accommodation Coefficients ◽  
Energy Exchanges

The interaction between gas atoms and solid surfaces has been studied experimentally for many years. The first detailed study of the nature of this interaction was perhaps due to Knudsen, who in his classical researches introduced the idea of the accommodation coefficients for energy or momentum exchanges between gas atoms and a solid surface, when the gas atoms and the solid are at different temperatures or possess different mass motions. Knudsen and other investigators have given numerical values for these accommodation coefficients for various gases and solid surfaces, which seem to indicate that the accommodation coefficients are never small and are often of the order unity. This means that the gas molecules before reflection accommodate themselves almost completely to equilibrium with the temperature or motion of the wall. Before the recent work of Roberts referred to below, which has inspired this paper, no special precautions had been taken in the preparation of the wall surface, and as we now know the walls used by all previous investigators must have been completely covered with at least a mono-molecular film of gas. Thus the old observations of the accommodation coefficient do not determine it under precise conditions, and find in fact a value many times larger than that found by Roberts for the energy exchanges between the gas and a clean tungsten surface. For helium and metal with a dirty surface the value of the accommodation coefficient is some 6 times as large as the true value for the clean surface. The older values of the coefficients were so large that there were apparently grave difficulties in the way of any simple theory, but this is so no longer.

scholarly journals Organic Molecules in the Icy Bodies of Planetary Systems – Accepted Notions and New Ideas

2018 ◽  
Vol 27 (1) ◽  
pp. 341-355 ◽  
Author(s):  
Irakli Simonia ◽  
Dale P. Cruikshank
Keyword(s):  
Organic Molecules ◽  
Emission Lines ◽  
Photoluminescence Spectra ◽  
Spectral Emission ◽  
Small Bodies ◽  
Self Organized ◽  
New Ideas ◽  
Hydrocarbon Molecules ◽  
Complex Organic ◽  
Frozen Hydrocarbon Particles

Abstract Cometary bodies are acknowledged to contain some of the most pristine matter in the Solar System, including ices and minerals. Certain number of previously unidentified spectral emission features detected in comets can be explained as emission by hydrocarbon molecules enclosed in a Shpolskii matrix and forming frozen hydrocarbon particles. UV-induced photoluminescence spectra of several self-organized molecules exhibit emission lines coincident with unidentified cometary lines, and open the possibility of the presence of this complex organic as components of the pristine organic inventory of comets. Complex organic was detected also in three satellites of Saturn. We describe in this paper results of our investigation of complex organic of the small bodies and present new approaches and hypotheses.

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