Flow behaviour of zeolite powders at high process temperatures

Ajabshir, Sina Zinatlou; Gucuyener, Canan; Vivacqua, Vincenzino; Gobby, Darren; Stitt, E. Hugh; Poletto, Massimo

doi:10.1016/j.powtec.2022.117818

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…Investigations by shear testing at high temperatures have considered several powders with very different chemical natures, particle size distributions, and particle shapes, including fly ashes (Kanaoka et al, 2001;Liu et al, 2018), MgSO 4 and CaSO 4 powders (Smith et al, 1997), food powders (Ripp and Ripperger, 2010), ceramic powders (Chirone et al, 2016(Chirone et al, , 2018Tomasetta et al, 2013), catalyst and catalyst support powders (Tomasetta et al, 2013;Zinatlou Ajabshir et al, 2022), titanium dioxide powders (Macrì et al, 2017b), and polymer powders for additive manufacturing (Ruggi et al, 2020a;2020b).…”

Section: Shear Testing Experimentsmentioning

confidence: 99%

“…Zinatlou Ajabshir et al (2022) highlighted the role of the presence of fines for a zeolite powder with a wide particle size distribution in the definition of a more or less significant effect of temperature on flowability. This finding was explained with the Rumpf model corrected to consider the effect of a bimodal distribution with micrometric-sized core host particles coated by smaller satellite or guest particles in the form of agglomerates.…”

Section: Experiments Qualitatively Supporting the Theorymentioning

confidence: 99%

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The Effect of Process Conditions on Powder Flow Properties for Slow Flow Regimes

Zinatlou Ajabshir,

Barletta,

Poletto

2024

KONA

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In several industrial units and applications, particulate solids are exposed to peculiar process conditions that significantly affect their flowability. Accurate characterisation and prediction of these effects are crucial for proper design and operation control of the processes. Liquid content, environmental humidity, and temperature can directly modify the type and magnitude of the interparticle forces and, thus, the cohesive behaviour at the bulk scale. This paper reports a critical review of experimental and modelling studies regarding the quantitative assessment of the effect of powder liquid content, environmental gas humidity and temperature on the mechanics of dense particle assemblies. Particular attention is paid to novel setups and experimental protocols that aim to go beyond the limits of standard and commercial instruments. A multiscale approach is followed from the particle level to the bulk level.

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Section: Shear Testing Experimentsmentioning

confidence: 99%

Section: Experiments Qualitatively Supporting the Theorymentioning

confidence: 99%

The Effect of Process Conditions on Powder Flow Properties for Slow Flow Regimes

Zinatlou Ajabshir,

Barletta,

Poletto

2024

KONA

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“…Conversely, 90 % of the particles are no larger than 103 μm. Nevertheless, by manufacturing zeolites a theoretical framework has been established for the impact of grain distribution [28]. The XRD diffractograms of ANA and its pattern are described in Fig.…”

Section: Description Of Zeolitesmentioning

confidence: 99%

Hydrothermal Conversion of Fly Ash into Monomineralic Zeolite Synthesis for Biodiesel Production

Kochaniec,

Grabias-Blicharz,

Franus

2024

Environmental and Climate Technologies

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Fly ashes as a residue from combustion processes of coal in coal-fired power stations can be applied for zeolite formation. The zeolite synthesis has considerable effect on their structure following further catalytic use. The formation of analcime is guided by the operation of the silicate framework in the company of Na+, [Al(OH)4]−, [H2SiO4]2− species, coming from fly ash processing. Here, we have highlighted the importance of conducting the coal fly ash waste management towards monomineralic zeolite synthesis, in the form of powder analcime. It is the first report on powder analcime production without fly ash residues, confirmed by SEM and XRD analysis. The obtained analcime-zeolite was further explored as biodiesel catalyst based on base-catalyzed transesterification process. The effect of analcime catalyst usage on the biodiesel yield was determined with observed 97.2 % conversion efficiency under the concentration of 4%wt at 230 °C, with three times reusable analcime catalysts. Coal fly ash-derived monominerals on a large scale can significantly contribute to the sustainability goals and efficient waste management.

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Experimental characterisation of the spreading of polymeric powders in powder bed fusion additive manufacturing process at changing temperature conditions

Zinatlou Ajabshir,

Sofia,

Hare

et al. 2024

Advanced Powder Technology

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Flow behaviour of zeolite powders at high process temperatures

Cited by 5 publications

References 27 publications

The Effect of Process Conditions on Powder Flow Properties for Slow Flow Regimes

The Effect of Process Conditions on Powder Flow Properties for Slow Flow Regimes

Hydrothermal Conversion of Fly Ash into Monomineralic Zeolite Synthesis for Biodiesel Production

Experimental characterisation of the spreading of polymeric powders in powder bed fusion additive manufacturing process at changing temperature conditions

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