With the help of focus analysis method, scientists put forward new ideas of chemical reaction criteria
A chemist at Emory University in the United States has recently solved an important mystery in physical chemistry, that is, why chemical reactions involving methane do not meet the known Polanyi rules. Related papers were published in the recent "Science" magazine.
John Polanyi won the Nobel Prize in Chemistry in 1986 for proposing a general criterion for the influence of different forms of energy on the rate of chemical reactions. However, in recent years, Taiwanese scientist Kopin Liu proved that the reaction of halogen atoms with methane does not meet this criterion. Gábor Czakó and Joel Bowman found in the study that there is a subtle interaction between the pre-reaction long-range forces of methane and chlorine and the Polanyi criterion. If the Polanyi guidelines are followed, long-range forces will stagger the reactants (chlorine and methane) and inhibit the reaction. On the contrary, chemical reactions can occur.
Bowman said that their theory expands and modifies the Polanyi criterion. The research is also conducive to the development of cleaner and more efficient fuels. (Science Network Ren Chunxiao / Compilation)
Related instruments and methods: focus analysis
Completion: Joel Bowman Research Group
Laboratory: Department of Chemistry, Emory University, USA
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