Ni containing porphyrins

Figure 19. Is NEXAFS spectra of metal free (left), and Ni containing porphyrines (top). Spectra shown on the top are collected in electron yield mode, and the spectra shown on the bottom are collected using fluorescence. Spectrum of 2-methylbenzimidazole is shown for a comparison (lower spectrum in bottom figure). One of the distinct features between the metalated and metal-free porphyrine is the absence of peak at 401.1 eV in the former. [Used with permission from Vairavamurthy and Wang 2002. and Mitra-Kirtley et al. 1993. American Chemical Society.]...

There is a wealth of information on HDM reactions involving model compounds such V- and Ni-containing porphyrins, as well as real feeds." However, a predominant part of this database involves the catalysts supported on y-Al203 and other metal-oxide supports. The reaction network for the HDM of metal tetraphenyl porphyrins (MTPP) developed by Janssens et is shown in Figure 57. This is among the most detailed networks... 

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