Li Promoted Sodium Zirconates as High Temperature Absorbent
Bibliographic record
Abstract
Previous studies reported that Na2ZrO3 exhibited better high temperature CO2 capture features than other Li-base materials towards its use in hydrogen production. This work is aimed to increase Na2ZrO3 absorption capacity by the addition of Li. Na2ZrO3 was synthesized by solid-state reaction and impregnated with LiNO3 at different Li/Na molar ratios: 0, 0.03, 0.05, 0.1 and 0.25. Characterization consisted in XRD and SEM. Absorbents were evaluated by TGA at 600 °C, 80 % CO2/Ar (absorption) and 800 °C, air (regeneration). XRD results found the Na2ZrO3 structure in all samples. However, Li promoted samples presented substitution of Na by Li in the Na2ZrO3 structure. According to TGA, absorption/regeneration kinetics was not modified by the effect of Li. Instead, CO2 capture capacity increased with Li content up to a limit between 10 to 25 % mol. This was attributed to formation of Na4ZrO4 type structures, which can be responsible of the increase in capture capacity.
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How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".