Studies of the rates of thermal decomposition of glycine, alanine, and serine

Yablokov, V. Ya.; Smel’tsova, I. L.; Zelyaev, I. A.; Mitrofanova, S. V.

doi:10.1134/s1070363209080209

Cited by 37 publications

(16 citation statements)

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“…The formation of these volatiles has been observed and explained for 1G and 2G. 27,[69][70][71][72][73][74] Samples recovered at 600 or 800 °C were black glassy residues which is consistent with the formation of partially decomposed polymeric matter.…”

Section: Pyrolysis Of Glycine Homopeptides In the Solid Statementioning

confidence: 97%

Glycine homopeptides: the effect of the chain length on the crystal structure and solid state reactivity

2014

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Section: Pyrolysis Of Glycine Homopeptides In the Solid Statementioning

confidence: 97%

Glycine homopeptides: the effect of the chain length on the crystal structure and solid state reactivity

2014

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“…However, the highly stable nature of amino acids has been widely reported, and suggests that this would be unlikely at such low temperatures (e.g. Sato et al, 2004;Yablokov et al, 2009). …”

Section: Aliquot Amino Acid Concentrations 275mentioning

confidence: 98%

Apatite for destruction: investigating bone degradation due to high acidity at Star Carr

High¹,

Milner²,

Panter³

et al. 2015

Journal of Archaeological Science

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“…This result is consistent with previously reported temperatures for the decomposition of glycine. 78 By comparison of these results, it follows that for a gas-phase intermediate to have any notable impact on the mechanochemical reaction, energies within the mechanoreactor would be required to reach the equivalent of ca. 132 C. From DSC it is known that GSM is formed well below 132 C and thus, a gas-phase intermediate does not appear to be a plausible mechanism.…”

Section: 22mentioning

confidence: 99%

Advances in elucidating mechanochemical complexities via implementation of a simple organic system

et al. 2014

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Mechanochemistry is becoming increasingly popular amongst both the academic and industrial communities as an alternative method for inducing physical and chemical reactions. Despite its rapidly expanding application, little is understood of its mechanisms, greatly limiting its capacity. In the present work the application of specialty devices allowed submission of the simple organic system, α-glycine + β-malonic acid, to isolated shearing and impact treatment. In doing so, unique products were observed to result from each of these major mechanical actions; shear inducing formation of the known salt, glycinium semi-malonate (GSM), and impact yielding formation of a novel phase. Correlation of these isolated treatments with a more common ball mill indicated two unique regions within the milling jar, each characterised by varying ratios of shear and impact, leading to different products being observed. It is widely accepted that, particularly when considering organic systems, mechanical treatment often acts by inducing increases in local temperature, leading to volatilisation or melting. A combination of DSC and TGA were used to investigate the role of temperature on the system in question. Invariably, heating induced formation of GSM, with evidence supporting a eutectic melt, rather than a gas-phase reaction. Shear heating alone is unable to describe formation of the novel phase obtained through impact treatment. By considering the formation and character of mechanically produced tablets, a model is described that may account for formation of this novel phase. This system and methodology for mechanochemical study offers intriguing opportunities for continued study of this widely used and exciting field.

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Studies of the rates of thermal decomposition of glycine, alanine, and serine

Cited by 37 publications

References 0 publications

Glycine homopeptides: the effect of the chain length on the crystal structure and solid state reactivity

Glycine homopeptides: the effect of the chain length on the crystal structure and solid state reactivity

Apatite for destruction: investigating bone degradation due to high acidity at Star Carr

Advances in elucidating mechanochemical complexities via implementation of a simple organic system

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