Effect of reaction conditions on product distribution from the co-pyrolysis of α-amino acids with glucose

Sharma, Ramesh K.; Chan, W. Geoffrey; Hajaligol, Mohammad R.

doi:10.1016/j.jaap.2009.04.013

Cited by 20 publications

(12 citation statements)

References 41 publications

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“…The first step appeared at 50–100 °C and was related to the evaporation of moisture in the watermelon rind. When the temperature interval was 150–200 °C, there was a significant mass loss, which was consistent with the gaseous products derived from the decomposition of bound water and the initial pyrolysis of polysaccharides . As the temperature increased, an intensive peak of mass loss occurred at ≈300 °C due to the deep thermolysis of polysaccharides (fructose and glucose) .…”

Section: Resultssupporting

confidence: 69%

Self‐Nitrogen‐Doped Porous Biocarbon from Watermelon Rind: A High‐Performance Supercapacitor Electrode and Its Improved Electrochemical Performance Using Redox Additive Electrolyte

et al. 2019

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Self‐nitrogen‐doped biocarbons are obtained from the watermelon rind via an easy one‐step pyrolysis‐activation process. Porous biocarbon ACW‐2, obtained with a watermelon/potassium hydroxide (KOH) mass ratio of 1:2 at 700 °C, exhibits a large specific surface area of 1303.3 m2 g−1 and is decorated with abundant nitrogen/oxygen‐containing functional groups. When ACW‐2 is used as a supercapacitor electrode, a high specific capacitance of 260 F g−1 is achieved at a current density of 1 A g−1. ACW‐2 also exhibits an ultrahigh cycling stability, and its retention rate is maintained at 93.8% even after 5000 cycles at a scan rate of 100 mV s−1. Furthermore, ACW‐2 acquires a supramaximal specific capacitance (852 F g−1) and a high energy density (12.9 Wh kg−1) when p‐phenylenediamine redox additive is added into the KOH electrolyte. Therefore, the watermelon rind can be used as a promising biomass precursor, and the as‐prepared porous biocarbon is expected to be an outstanding comprehensive electrode material for electrochemical supercapacitors.

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Section: Resultssupporting

confidence: 69%

Self‐Nitrogen‐Doped Porous Biocarbon from Watermelon Rind: A High‐Performance Supercapacitor Electrode and Its Improved Electrochemical Performance Using Redox Additive Electrolyte

et al. 2019

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“…We attribute the formation of these ribbon‐like structures to the pyrolysis of pure arginine that involves polymerisation and self‐assembly through intermolecular interactions, which further aromatises to exhibit this specific topology (as discussed earlier using the TGA‐MS results). This observation is in agreement with other research that describe the pyrolysis kinetics of pure arginine (in the absence of salts) . The short‐ranged ribbon‐like morphology can also be observed in the case of STCA_4 (Figure b) wherein arginine was co‐carbonised with algae and salt templates.…”

Section: Resultssupporting

confidence: 91%

Salt Templating with Pore Padding: Hierarchical Pore Tailoring towards Functionalised Porous Carbons

et al. 2016

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We propose a new synthetic route towards nanoporous functional carbon materials based on salt templating with pore-padding approach (STPP). STPP relies on the use of a pore-padding agent that undergoes an initial polymerisation/ condensation process prior to the formation of a solid carbon framework. The pore-padding agent allows tailoring hierarchically the pore-size distribution and controlling the amount of heteroatom (nitrogen in this case) functionalities as well as the type of nitrogen (graphitic, pyridinic, oxides of nitrogen) incorporated within the carbon framework in a single-step-process. Our newly developed STPP method offers a unique pathway and new design principle to create simultaneously high surface area, microporosity, functionality and pore hierarchy. The functional carbon materials produced by STPP showed a remarkable CO /N selectivity. At 273 K, a carbon with only micropores offered an exceptionally high CO adsorption capacity whereas a carbon with only mesopores showed promising CO -philicity with high CO /N selectivity in the range of 46-60 %, making them excellent candidates for CO capture from flue gas or for CO storage.

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“…[12][13][14][15]17 This has been evidenced by a nonadditive behavior with regards to its pyrolysis products 12−15 and, more recently, by the pyrolysis kinetics derived by our group, which have shown a markedly faster decomposition reaction when mixed with glucose than cellulose. 17 With regard to the pyrolysis reactions, numerous studies have shown that Maillard or browning chemistry also plays an important role in the decompostion of mixtures of amino acids and carbohydrates, such as cellulose and glucose.…”

Section: ■ Resultsmentioning

confidence: 97%

Nitrogen in Biomass Char and Its Fate during Combustion: A Model Compound Approach

et al. 2012

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The emission of nitrogen oxide (NO x ) from biomass combustion is still a concern, even though the nitrogen content of biomass in general is relatively small. To elucidate the pathways of fuel N conversion during combustion processes, many studies have focused on the pyrolysis of amino acids and/or model compounds. In contrast, the model compound char nitrogen and its fate during combustion have not been investigated. The partitioning of nitrogen between the volatiles and char and the type of nitrogen species released during char combustion are very important, because volatile N is better controlled by low NO x burners than the nitrogen retained in the char. In this study, low heating rate biomass model chars were prepared from a combination of either cellulose or glucose and five of the amino acids most commonly found in terrestrial biomass: L-proline, Lglutamine, L-histidine, L-asparagine, and L-tryptophan. The chars were characterized by X-ray photoelectron spectroscopy (XPS), and the partitioning of nitrogen was also calculated. Furthermore, the impact of protein nitrogen on emissions of nitrogen species from combustion processes was investigated by thermogravimetric analysis−mass spectrometry (TGA−MS) combustion tests, which were used to calculate the char combustion kinetics and conversion of char nitrogen to different nitrogen-containing species. Results indicate that there may be a correlation between the proportion of pyridinic N and pyrrolic N (and/or possibly some quaternary N) in the char and the N precursor. However, further correlations to the N species formed during the char combustion to the N functionalities in the chars were not obtained and merit further investigation. Finally, the char yields obtained and N partitioning of the model chars are comparable to those reported in the literature for biomass chars.

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Effect of reaction conditions on product distribution from the co-pyrolysis of α-amino acids with glucose

Cited by 20 publications

References 41 publications

Self‐Nitrogen‐Doped Porous Biocarbon from Watermelon Rind: A High‐Performance Supercapacitor Electrode and Its Improved Electrochemical Performance Using Redox Additive Electrolyte

Self‐Nitrogen‐Doped Porous Biocarbon from Watermelon Rind: A High‐Performance Supercapacitor Electrode and Its Improved Electrochemical Performance Using Redox Additive Electrolyte

Salt Templating with Pore Padding: Hierarchical Pore Tailoring towards Functionalised Porous Carbons

Nitrogen in Biomass Char and Its Fate during Combustion: A Model Compound Approach

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