Investigation of CF2 carbene on the surface of activated charcoal in the synthesis of trifluoroiodomethane via vapor-phase catalytic reaction

Catalytic pyrolysis of CHF3 over activated carbon and activated carbon supported potassium catalyst

“…This indicates that the decomposition of CHF 3 over activated carbon follows a mechanism which is different from the homogeneous mechanism. Recently, Yang et al [12][13][14] studied the pyrolysis of CHF 3 over activated carbon and in their experiments, C 2 F 4 was not detected. They suggest that the reactions leading to formation of CF 4 and C 2 F 6 is likely to be via the steps as illustrated in Scheme 1.…”

Density functional theory study of C2F5I synthesis over activated carbon catalyst

“…However, to the best of our knowledge, in the open literature, little information about the synthesis mechism of C 2 F 5 I was reported. The only related research is about the synthesis of CF 3 I in an analogous process [9][10][11][12][13]. Yang's experim e n ts [ 9 , 11 ] r e v e a l e d t h a t A C c a t a l y z e s t h e dehydrofluorination of CHF 3 to produce :CF 2 carbene and then :CF 2 carbenes disproportionate to afford :CF 3 radicals, finally the :CF 3 radicals reacted with I 2 to give CF 3 I, as illustrated in Scheme 1.…”

Density Functional Theory Study on Fluorine Abstraction of the CF3I Catalytic Synthesis

“…根据已有的实验及理论研究, CF 及 CF 3 可以缔合生 成吸附于 graphite(001)表面的 CFCF 3 , 实现碳链的增 长 [12,15] . Figure 2 Proposed reaction pathways for the generation of CF 3 and CF 4 吸附于 graphite(001)表面的 CFCF 3 和 CF 2 , 如图 3 所示.…”