On the flammable behavior of non-traditional dusts: Dimensionless numbers evaluation for nylon 6,6 short fibers

Portarapillo, Maria; Danzi, Enrico; Guida, Gianluca; Luciani, Giuseppina; Marmo, Luca; Sanchirico, Roberto; Benedetto, Almerinda Di

doi:10.1016/j.jlp.2022.104815

Cited by 8 publications

(5 citation statements)

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“…The DSC curve (red solid line, Figure ) shows endothermic peaks at 118 °C and one at 240 °C, accompanied by a mass change. The former can be ascribed to volatile loss (water and adsorbed organic compounds), as suggested by FTIR spectra of the gas phase, showing typical water absorption bands (at 3500 and 1630 cm –1 ) as well as a broad halo in the range of 3023–2820 cm –1 featuring C–H stretching in organic moieties . The spectra recorded at a temperature higher than 200 °C are typical of H 2 O (3700–3500 and 1500–1300 cm –1 represent the −OH bond stretching vibrations in H 2 O) and CO 2 (2400–2250 cm –1 ) and suggest the decomposition of organic species in the sample .…”

Section: Resultsmentioning

confidence: 87%

“…The former can be ascribed to volatile loss (water and adsorbed organic compounds), as suggested by FTIR spectra of the gas phase, showing typical water absorption bands (at 3500 and 1630 cm −1 ) as well as a broad halo in the range of 3023−2820 cm −1 featuring C−H stretching in organic moieties. 30 The spectra recorded at a temperature higher than 200 °C are typical of H 2 O (3700−3500 and 1500−1300 cm −1 represent the −OH bond stretching vibrations in H 2 O) and CO 2 (2400−2250 cm −1 ) and suggest the decomposition of organic species in the sample. 34 The last endothermic peak, without a mass change, represented the melting of sodium metaborate, anticipated at 918 °C as it is in the mixed form.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…The output of this analysis was a Gram–Schmidt diagram. The HR Nicolet TGA Vapor Phase library of OMNIC software was used to recognize the produced gases …”

Section: Methodsmentioning

confidence: 99%

“…The HR Nicolet TGA Vapor Phase library of OMNIC software was used to recognize the produced gases. 30 …”

Section: Methodsmentioning

confidence: 99%

“…The HR Nicolet TGA Vapor Phase library of OMNIC software was used to recognize the produced gases. 30 The chemical structure and crystallinity were evaluated by XRD analysis by an XRD diffractometer (model X'Pert Pro, Malvern PANalytical Ltd.) using Cu Kα radiation (1.5406 Å). The scanning range of 2θ was 5−100°with a step size of 0.013°and a scan step time of 18.87 s.…”

Section: ■ Introductionmentioning

confidence: 99%

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Cyan Hydrogen Process: A New Route for Simultaneous Hydrogen Production and Carbon Valorization

Di Nardo,

Portarapillo,

Russo

et al. 2024

ACS Omega

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Hydrogen is expected to largely contribute to the near-future circular economy. Today, most hydrogen is still produced from fossil fuels or renewable pathways with low efficiency and high cost. Herein, a proof of concept for a novel hydrogen production process is proposed, here named cyan hydrogen, inspired by a combination of the green and blue processes, due to the key role played by water and the low carbon content in the gas phase, respectively. The developed novel process, recently patented and demonstrated at the lab scale, is based on successive steps in which ethanol (5.0 mL) and water (10.0 mL) are alternately fed, with a fixed initial amount of sodium metaborate (2.0 g), in a batch reactor at 300 °C. Preliminary results showed the simultaneous production of a 95% v/v hydrogen stream, a polymeric byproduct with a repetitive carbon pattern −CH2–CH2–, and a liquid phase rich in oxygenated chemicals at temperatures lower than conventional hydrogen production processes.

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Section: Resultsmentioning

confidence: 87%

Section: ■ Results and Discussionmentioning

confidence: 95%

“…The output of this analysis was a Gram–Schmidt diagram. The HR Nicolet TGA Vapor Phase library of OMNIC software was used to recognize the produced gases …”

Section: Methodsmentioning

confidence: 99%

“…The HR Nicolet TGA Vapor Phase library of OMNIC software was used to recognize the produced gases. 30 …”

Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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