Synthesis of cyclic carbonates by CO2 cycloaddition with epoxides: recent advances, challenges, and perspectives
Bibliographic record
Abstract
The catalytic conversion of CO 2 into functionalized chemical products has evolved into a pivotal scientific frontier, garnering substantial research investment from multidisciplinary domains. Among diverse transformation pathways, the atomically economical cycloaddition between CO 2 and epoxides to synthesize cyclic carbonates stands out as a paradigm of sustainable synthesis, fully complying with green chemistry metrics and circular economy principles. These value-added cyclic carbonates serve as critical components in advanced energy storage systems ( e.g ., lithium-ion battery electrolytes), bioactive molecule synthesis, and specialty chemical production. This critical review systematically explores recent progress, technical barriers, and strategic directions within CO 2 cycloaddition research. The analysis commences with a mechanistic dissection of three predominant activation modes (CO 2 activation, epoxides activation and dual activation), subsequently conducting comparative assessments of catalytic systems spanning molecular complexes to heterogeneous frameworks. A techno-economic evaluation is then presented regarding reactor configurations, including batch processing, continuous flow systems, and microchannel technologies. Notably, the work emphasizes an urgent need for innovative catalytic materials capable of dual-functionality: selective adsorption of dilute CO 2 streams from industrial flue gases or ambient air under mild conditions (25 °C, 1 atm), coupled with in situ catalytic transformation into target carbonates without intermediate separation. The proposed research matrix establishes theoretical foundations and practical guidelines for developing next-generation carbon capture-utilization integrated technologies.
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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) | 0.000 | 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) | 0.000 | 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".