Synthesis and reactive characterization of aluminum iodate hexahydrate crystals [Al(H2O)6](IO3)3(HIO3)2

Smith, Douglas A.; Bello, Michael N.; Unruh, Daniel K.; Pantoya, Michelle L.

doi:10.1016/j.combustflame.2017.01.012

Cited by 25 publications

(39 citation statements)

References 6 publications

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“…The composition of a similar mixture (AIH ER 0.9) from previous work is shown for comparison. The mixing procedure used here is similar to the procedure used previously 12–14 ; however, the final composition of the AIH6 and AIH15 are significantly different as shown in Table 1. The concentrations of Al°, AIH and iodic acid from AIH6, AIH15 and another AIH sample mixed at an initial ER of 0.9 discussed in Smith et al .…”

Section: Resultsmentioning

confidence: 99%

“…%)HI 3 O 8 (wt. %)DensityOBAIH61:15.819.275.003.981.6%AIH152:115.020.052.412.64.360.4%AIH ER 0.9 12–14 2.4:157.818.611.911.63.390.3%…”

Section: Resultsmentioning

confidence: 99%

“…The mixing procedure used here is similar to the procedure used previously 12–14 . AIH mixtures were synthesized by first dissolving commercially available I 2 O 5 , supplied by Sigma Aldrich (St. Louis, MO), in distilled water prior to mixing 80 nm average diameter Al powder supplied by Novacentrix (Austin, TX).…”

Section: Methodsmentioning

confidence: 99%

“…The solubility of Al 2 O 3 in acidic solutions has been utilized in the synthesis of Al energetic materials to remove the Al 2 O 3 passivation layer surrounding Al particles and replace Al 2 O 3 with a reactive salt 12,13 . In Smith et al .…”

Section: Introductionmentioning

confidence: 99%

“…In Smith et al . 12,13 , it was shown that aluminum iodate hexahydrate (AIH) replaces the Al 2 O 3 passivation layer when Al particles are added to concentrated solutions of iodic acid. The Al 0 -AIH core-shell particles significantly increased reactivity with flame speeds measured as high as 3200 m/s 14 .…”

Section: Introductionmentioning

confidence: 99%

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Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

Gottfried

Smith

et al. 2018

Sci Rep

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A new synthesis approach for aluminum particles enables an aluminum core to be passivated by an oxidizing salt: aluminum iodate hexahydrate (AIH). Transmission electron microscopy (TEM) images show that AIH replaces the Al2O3 passivation layer on Al particles that limits Al oxidation. The new core-shell particle reactivity was characterized using laser-induced air shock from energetic materials (LASEM) and results for two different Al-AIH core-shell samples that vary in the AIH concentration demonstrate their potential use for explosive enhancement on both fast (detonation velocity) and slow (blast effects) timescales. Estimates of the detonation velocity for TNT-AIH composites suggest an enhancement of up to 30% may be achievable over pure TNT detonation velocities. Replacement of Al2O3 with AIH allows Al to react on similar timescales as detonation waves. The AIH mixtures tested here have relatively low concentrations of AIH (15 wt. % and 6 wt. %) compared to previously reported samples (57.8 wt. %) and still increase TNT performance by up to 30%. Further optimization of AIH synthesis could result in additional increases in explosive performance.

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Section: Resultsmentioning

confidence: 99%

“…%)HI 3 O 8 (wt. %)DensityOBAIH61:15.819.275.003.981.6%AIH152:115.020.052.412.64.360.4%AIH ER 0.9 12–14 2.4:157.818.611.911.63.390.3%…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

Gottfried

Smith

et al. 2018

Sci Rep

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Ignition and Combustion Characterization of Ca(IO₃)₂‐based Pyrotechnic Composites with B, Al, and Ti

Wang

Kline

Rehwoldt

et al. 2018

Propellants Explo Pyrotec

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This paper studies the reactive behavior of calcium iodate with Al, B and Ti fuel particles as a thermal and iodine release source for neutralization of biological materials that might be employed in weapons. Two different calcium iodate particle length scales (micron and submicron) with different fuel/oxidizer ratios were used to prepare the iodized nanopyrolants. The optimal ratio was found to be the one with equivalence ratio of 2.0 for all the three fuels. The reactivity of the pyrolants can be enhanced by dehydrating the Ca(IO3)2 or replacing the micron oxidizer particles with submicron particles. The thermal decomposition process of the pyrolants was investigated at low and high heating rate. The results show that B, Al and Ti nanoparticles can promote the decomposition of Ca(IO3)2, but the Ti nanoparticles are the most efficient, which lower temperature of the oxygen/iodine release from ∼660 °C to ∼400 °C. Thus, Ti/Ca(IO3)2 has the lowest ignition temperature of ∼400 °C. The various calcium iodate‐based pyrolants were shown to have a wide range of reactivity (1–4 orders of magnitude) and burn times (1–3 orders of magnitude), high flame temperature (1850–2800 K) and iodine loading capacity (∼20–60 wt.‐% of iodine), which makes it a promising class of biocidal energetic materials.

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Aluminum-Based Nano-energetic Materials: State of the Art and Future Perspectives

Thiruvengadathan

2018

Energy, Environment, and Sustainability

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Synthesis and reactive characterization of aluminum iodate hexahydrate crystals [Al(H2O)6](IO3)3(HIO3)2

Cited by 25 publications

References 6 publications

Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

Ignition and Combustion Characterization of Ca(IO₃)₂‐based Pyrotechnic Composites with B, Al, and Ti

Aluminum-Based Nano-energetic Materials: State of the Art and Future Perspectives

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Synthesis and reactive characterization of aluminum iodate hexahydrate crystals [Al(H2O)6](IO3)3(HIO3)2

Cited by 25 publications

References 6 publications

Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

Ignition and Combustion Characterization of Ca(IO3)2‐based Pyrotechnic Composites with B, Al, and Ti

Aluminum-Based Nano-energetic Materials: State of the Art and Future Perspectives

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Ignition and Combustion Characterization of Ca(IO₃)₂‐based Pyrotechnic Composites with B, Al, and Ti