Evaluate the pyrolysis pathway of glycine and glycylglycine by TG–FTIR

TG–FTIR, LC/MS, XANES and Py-FIMS to disclose the thermal decomposition pathways and aromatic N formation during dipeptide pyrolysis in a soil matrix

“…The first peaks were attributed to deamination of pristine molecules, and the second to secondary pyrolysis reactions. However, different from [20] we did not find a pronounced deamination peak suggesting that the majority of free amine groups were already transformed into the amide and/or imide moiety before activation energy for direct deamination was reached. This was also supported by the unchanged C/N ratio of the 200 • C residue (Table 1).…”

“…Furthermore, the evolution of NH 3 started during this decomposition step and exhibited a weak shoulder around 280 • C at the peak of maximum NH 3 release (360 • C). Pyrolysis of Gly and Gly-Gly also had two NH 3 release peaks at similar temperatures (260-285 • C, 360-380 • C) [20]. The first peaks were attributed to deamination of pristine molecules, and the second to secondary pyrolysis reactions.…”

Modification of titania nanoparticles for photocatalytic antibacterial activity via a colloidal route with glycine and subsequent annealing

“…34 Although one-to-one correspondence of the observed differential thermogravimetric (DTG) peaks in the present study to these sequence is not possible at present, the DTG peak shift to the lower temperature side and increased separation of the peaks observed might imply the decomposition promotion due to the thermocatalytic action of the titania substrate and the complex formation. This is attributed to the specific binding of the molecular fractions, due to the specific adsorption configuration.…”

Phenols from pyrolysis and co-pyrolysis of tobacco biomass components

“…It has been postulated that the combined study of biomass and amino acids is the best approach to grasp a more comprehensive mechanism of nitrogen chemistry in biomass components (N-Chemistry) (Becidan et al, 2007). While the pyrolysis of amino acids has been extensively studied, there is very little information on the product distribution from the co-pyrolysis of amino acids with other forms of biomass (Li et al, 2007;Ren et al, 2011). Thus, this study attempts to bridge this gap in a more detailed manner.…”

“…Thus, this study attempts to bridge this gap in a more detailed manner. Since most of the elemental nitrogen is bound in proteins, co-pyrolysis of lignin + tyrosine, ethyl cellulose + tyrosine, and sodium alginate + tyrosine was conducted with the aim of finding features that are protein-specific (Li et al, 2007;Hansson et al, 2003Hansson et al, , 2004. Notably, the studies of the pyrolysis of some biomass constituents such as tyrosine, laminarin and sodium alginate are scarce in literature.…”