Replacing the Al<sub>2</sub>O<sub>3</sub> Shell on Al Particles with an Oxidizing Salt, Aluminum Iodate Hexahydrate. Part II: Synthesis
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Bibliographic record
Abstract
The main reaction mechanism that replaces the Al 2 O 3 passivation layer on Al nanoparticles with an energetic AIH salt is demonstrated. The reaction mechanism is pH dependent and utilizes electrostatic forces that occur between the Al 2 O 3 passivation layer and free hydrogen atoms (H + ) in solution. When Al particles are added to highly acidic solutions, free H + polarize the Al–O bonds in Al 2 O 3, resulting in the formation of H 2 O and free Al 3+ cations that are complexed by water molecules and exist as [Al(H 2 O) 6 ] 3+ in aqueous solutions. The concentration of AIH is limited by the amount of [Al(H 2 O) 6 ] 3+ that forms from the polarization reaction between free H + and the initial Al 2 O 3 concentration. The proposed mechanism describes a stoichiometric reaction, but deviations from the stoichiometric reaction are expected with varying equivalence ratios (ER). The polarization mechanism is confirmed by measuring deviations in concentration of final AIH mixtures as a function of ER. A salt formation theory dependent on pH and p K a is used to demonstrate how the final AIH concentrations can be estimated at ER values that are not stoichiometric.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it