Bonding of Organic Amino, Vinyl, and Acryl Groups to Nanometer-Sized NaX Zeolite Crystal Surfaces
Bibliographic record
Abstract
Nanometer-sized faujasite zeolite (nanoNaX), synthesized with an organic-additive-free approach, was modified with organic functional groups. Raman scattering and solid-state NMR techniques were employed to study the organic components on the zeolites, the structures of the zeolitic frameworks, and the connections between the organosilyl groups and zeolitic silanol groups. Aminopropylsilyl (APS) and vinylsilyl (VS) groups were covalently grafted to the zeolitic surfaces by directly reacting the nanozeolite with corresponding organosilanes. Although the acryloyl group cannot be introduced onto the zeolitic surface by directly reacting nanoNaX with acryloyl chloride, acrylation can be achieved with APS-modified nanozeolite. 29 Si solid-state NMR studies clearly indicate the transformation of zeolitic silicate species from Q 3 to Q 4 with organosilyl modification. This shows that the connections between the organosilyl groups and the zeolitic silanol groups can be represented as RSi(OSi zeolite ) x . In the APS-nanoNaX and Acryl-APS-nanoNaX modified materials, the presence of strong T 2 29 Si NMR resonance signals indicates that the connection is mainly in the form RSi(OSi zeolite ) 2 . However, in the VS-nanoNaX, the main connection is RSi(OSi zeolite ) 3 as the 29 Si chemical shift of the organosilyl species is found at −65 ppm, i.e., consistent with a T 3 structure.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 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 | 0.000 | 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".