Evidence map›Paper›PMID 39202840›Full record

ArticleMolecules (Basel, Switzerland)2024

Compositional Characterization of Syngas-Based Glycolide Using Gas Chromatogram-Mass Spectrometry and Electrospray Ionization High-Resolution Mass Spectrometry.

Yachun Zhang, Junyang Chen, Jianhua He, Shuofan Li, Yuanfeng Wang, Yahe Zhang, Quan Shi

Abstract read
In one paragraph

Article in Molecules (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Yachun ZhangCHN Energy Yulin Chemical Co., Ltd., Yulin 719000, China.
Junyang ChenState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.ORCID 0009-0004-3452-6008
Jianhua HeCHN Energy Yulin Chemical Co., Ltd., Yulin 719000, China.
Shuofan LiState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.ORCID 0000-0002-9084-6290
Yuanfeng WangState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
Yahe ZhangState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.ORCID 0000-0003-2573-568X
Quan ShiState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.ORCID 0000-0002-1363-1237

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Polyglycolic acid (PGA) is a biologically friendly material with a wide range of applications. The production of dimethyl oxalate using coal-based syngas and the hydrogenation of dimethyl oxalate can produce the polymerization raw material of PGA, glycolide, which requires a methyl glycolate polymerization and depolymerization process. The intermediate products of the production process were analyzed using gas chromatogram-mass spectrometry (GC-MS) and Orbitrap mass spectrometry (Orbitrap MS), which revealed the presence of cyclic and linear PGAs with different capped ends. The impurities present in the oligomer were mostly methyl-capped PGA and were retained in the subsequent depolymerization process to glycolide, solvent washing can be used to remove this part of the impurity and ultimately obtain a refined glycolide product. Furthermore, it is proposed that the use of the specialized Kendrick Mass Defect (KMD) to plot and analyze PGA compounds obtained using mass spectrometry can enable the direct classification of PGAs without the need for exact molecular formula assignment.

Indexed as

glycolideKendrick Mass Defectmass spectrometrySyngas-Based

Identifiers

PMID39202840
PMCPMC11356849

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.