Influence of Temperature on the Heterogeneous Reaction of Formic Acid on α-Al2O3

2012 ◽  
Vol 116 (42) ◽  
pp. 10390-10396 ◽  
Author(s):  
Ling-Yan Wu ◽  
Sheng-Rui Tong ◽  
Si-Qi Hou ◽  
Mao-Fa Ge
Keyword(s):  
Formic Acid ◽  
Heterogeneous Reaction ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Α Al2o3

scholarly journals The influence of temperature on two alternative modes of decomposition of formic acid

1922 ◽  
Vol 100 (707) ◽  
pp. 575-581 ◽  
Keyword(s):  
Kinetic Theory ◽  
Formic Acid ◽  
Internal Energy ◽  
Energy Content ◽  
Chemical Change ◽  
Critical Energy ◽  
Specific Factor ◽  
Influence Of Temperature ◽  
First Case ◽  
Influence Of Temperature On

It is generally agreed that the very rapid increase with temperature of the velocity of chemical change is only to be explained by the assumption that the reactive molecules are those of relatively large internal energy-content. Whether the activation of molecules is brought about by collisions with other molecules, or by the absorption of quanta of radiation, is at present a matter of controversy. But, given that activated molecules are produced in one of these ways, the further question arises as to whether every molecule with the necessary critical energy reacts at once, or whether in addition to possessing this it must be in a certain phase. In the first case the velocity of a chemical change would be simply governed by a "time of relaxation" in the sense of the kinetic theory, while in the second case an additional specific factor would be concerned. Investigations have failed hitherto to give an unequivocal answer to this question, but the study of the influence of temperature on two simultaneous modes of decomposition of a molecule such as formic acid appeared to offer an opportunity of deciding it.

The effect of temperature on high-resolution TEM image contrast

1995 ◽  
Vol 53 ◽  
pp. 640-641
Author(s):  
T. Geipel ◽  
W. Mader ◽  
P. Pirouz
Keyword(s):  
Form Factor ◽  
Inelastic Scattering ◽  
Accurate Method ◽  
Waller Factor ◽  
Effect Of Temperature ◽  
Specimen Thickness ◽  
Influence Of Temperature ◽  
Debye Waller Factor ◽  
Influence Of Temperature On ◽  
Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

The Influence of Temperature on Successful Reproductions of Burbot, Lota Lota (L.) Under Hatchery Conditions

2010 ◽  
Vol 25 (1) ◽  
pp. 93-105 ◽  
Author(s):  
Daniel Żarski ◽  
Dariusz Kucharczyk ◽  
Wojciech Sasinowski ◽  
Katarzyna Targońska ◽  
Andrzej Mamcarz
Keyword(s):  
Lota Lota ◽  
Influence Of Temperature ◽  
Influence Of Temperature On

On the Influence of Temperature on the Process of Mutation, with Reference to Goldschmidt's Data

1930 ◽  
Vol 64 (695) ◽  
pp. 570-574 ◽  
Author(s):  
Leo Ferry ◽  
N. I. Shapiro ◽  
B. N. Sidoroff
Keyword(s):  
Influence Of Temperature ◽  
Influence Of Temperature On
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