Ignition of dimethyl ether/air mixtures by hot particles: Impact of low temperature chemical reactions

2020 ◽  
Author(s):  
Yiqing Wang ◽  
Huangwei Zhang ◽  
Thorsten Zirwes ◽  
Feichi Zhang ◽  
Henning Bockhorn ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dimethyl Ether ◽  
Chemical Reactions ◽  
Hot Particles

scholarly journals Advances in Cryochemistry: Mechanisms, Reactions and Applications

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 750
Author(s):  
Lu-Yan An ◽  
Zhen Dai ◽  
Bin Di ◽  
Li-Li Xu
Keyword(s):  
Low Temperature ◽  
Chemical Reactions ◽  
Common Sense ◽  
Reaction Rate ◽  
Concentration Effect ◽  
Biological Products ◽  
Freeze Concentration ◽  
New Strategy ◽  
The 1960S

It is counterintuitive that chemical reactions can be accelerated by freezing, but this amazing phenomenon was discovered as early as the 1960s. In frozen systems, the increase in reaction rate is caused by various mechanisms and the freeze concentration effect is the main reason for the observed acceleration. Some accelerated reactions have great application value in the chemistry synthesis and environmental fields; at the same time, certain reactions accelerated at low temperature during the storage of food, medicine, and biological products should cause concern. The study of reactions accelerated by freezing will overturn common sense and provide a new strategy for researchers in the chemistry field. In this review, we mainly introduce various mechanisms for accelerating reactions induced by freezing and summarize a variety of accelerated cryochemical reactions and their applications.

scholarly journals On apparent barrier-free reactions

2020 ◽  
Vol 3 (1) ◽  
pp. 3-8
Author(s):  
Maikel Ballester
Keyword(s):  
Low Temperature ◽  
Chemical Reactions ◽  
Rate Constant ◽  
Kinetic Models ◽  
Rate Coefficient ◽  
Minimum Energy ◽  
Temperature Limit ◽  
Rate Coefficients ◽  
Minimum Energy Path ◽  
Full Dimension

Rate coefficients of bi-molecular chemical reactions are fundamental for kinetic models. The rate coefficient dependence on temperature is commonly extracted from the analyses of the reaction minimum energy path. However, a full dimension study of the same reaction may suggest a different asymptotic low-temperature limit in the rate constant than the obtained from the energetic profile.

scholarly journals Detection and Identification of the Keto-Hydroperoxide (HOOCH2OCHO) and Other Intermediates during Low-Temperature Oxidation of Dimethyl Ether

2015 ◽  
Vol 119 (28) ◽  
pp. 7361-7374 ◽  
Author(s):  
Kai Moshammer ◽  
Ahren W. Jasper ◽  
Denisia M. Popolan-Vaida ◽  
Arnas Lucassen ◽  
Pascal Diévart ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dimethyl Ether ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Detection And Identification
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