Article(id=1309633949056463074, tenantId=1146029695717560320, journalId=1308397254396182630, issueId=1309633894375326119, articleNumber=null, orderNo=null, doi=10.3724/2097-213X.2025.JFCT.0033, pmid=null, cstr=32157.14.2097-213X.2025.JFCT.0184, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1760025600000, receivedDateStr=2025-10-10, revisedDate=1762876800000, revisedDateStr=2025-11-12, acceptedDate=1764518400000, acceptedDateStr=2025-12-01, onlineDate=1790170665277, onlineDateStr=2026-09-23, pubDate=1771084800000, pubDateStr=2026-02-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790170665277, onlineIssueDateStr=2026-09-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790170665277, creator=13701087609, updateTime=1790170665277, updator=13701087609, issue=Issue{id=1309633894375326119, tenantId=1146029695717560320, journalId=1308397254396182630, year='2026', volume='54', issue='2', pageStart='20250054-226', pageEnd='20250275-294', issueExtLink='null', onlineDate='null', pubDate='1771084800000', pubDateStr='2026-02-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1790170652240, creator='13701087609', updateTime=1790213058103, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1309811757514846670, tenantId=1146029695717560320, journalId=1308397254396182630, issueId=1309633894375326119, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1309811757514846671, tenantId=1146029695717560320, journalId=1308397254396182630, issueId=1309633894375326119, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=20250275-286, endPage=20250275-294, ext={EN=ArticleExt(id=1309633949408784611, articleId=1309633949056463074, tenantId=1146029695717560320, journalId=1308397254396182630, language=EN, title=Mechanistic insights into alkaline earth metal ion-catalyzed pyrolysis of lignin monomers: Pathways to CO and CO
2 evolution, columnId=null, journalTitle=Journal of Fuel Chemistry and Technology, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In this study, sixteen types of lignin monomer model compounds with aldehyde and carboxyl substituents at the Cα or Cβ positions were selected, representing phenyl, p-hydroxyphenyl, guaiacyl, and syringyl structural units. The catalytic effects of alkaline earth metal ions (Ca2+ and Mg2+) on the formation of CO and CO2 during lignin pyrolysis were investigated by using density functional theory (DFT) calculations. The results revealed that Ca2+ and Mg2+ readily coordinate with oxygen-containing functional groups in lignin model compounds, forming stable complexes with lower energy states. When aldehyde, carboxyl, phenolic hydroxyl, and methoxy groups coexist, the optimal binding sites for Ca2+ and Mg2+ are O(phenolic hydroxyl)–Ca2+/Mg2+–O(methoxyl) configurations. During the pyrolysis process of lignin monomers, Ca2+ and Mg2+ selectively promote the decarbonylation of benzaldehyde-type and phenylethanal-type lignin monomer model compounds (excluding phenylethanal and 4-hydroxyphenylethanal), thereby enhancing the generation of CO. Conversely, except for the Ca2+-catalyzed decarboxylation of 4-hydroxy-3-methoxyphenylethanoic acid, Ca2+ and Mg2+ can suppress the decarboxylation of benzoic acid-type and phenylacetic acid-type lignin monomer model compounds, resulting in the reduction of CO2 formation.
, authors=Xiaoyan JIANG
1, *, Yiming HAN
1, Xingwei LI
1, Zhentao TANG
1, Zijie XU
1, Qianli WANG
1, Bin HU
2, authorsList=Xiaoyan JIANG, Yiming HAN, Xingwei LI, Zhentao TANG, Zijie XU, Qianli WANG, Bin HU, authorCompany=null, correspAuthors=Xiaoyan JIANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Fuel Chemistry and Technology. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1309633953103966458, articleId=1309633949056463074, tenantId=1146029695717560320, journalId=1308397254396182630, language=CN, title=碱土金属离子催化木质素单体热解生成CO和CO
2的机理研究, columnId=1309584910000677174, journalTitle=燃料化学学报(中英文), columnName=RESEARCH PAPER, runingTitle=null, highlight=null, articleAbstract=
本研究选取16种Cα位、Cβ位分别为醛基和羧基的苯基、对羟基苯基、愈创木基、紫丁香基型木质素单体模型化合物,通过密度泛函理论(DFT)方法研究了碱土金属离子(Ca2+和Mg2+)对木质素热解生成CO和CO2的影响。研究结果表明,Ca2+和Mg2+易与木质素模型化合物的含氧官能团结合,形成结构稳定、能量较低的复合物,当醛基、羧基、酚羟基及甲氧基含氧官能团同时存在的情况下,Ca2+、Mg2+的最优结合位点为O(酚羟基)–Ca2+/Mg2+–O(甲氧基)。在热解过程中,除了苯乙醛和4-羟基苯乙醛,Ca2+和Mg2+能够促进苯甲醛类和苯乙醛类木质素单体模型化合物的脱羰基反应,从而促进CO的生成;除了Ca2+催化作用下的4-羟基-3-甲氧基苯乙酸,其他情况下,Ca2+、Mg2+均会抑制苯甲酸类和苯乙酸类木质素单体模型化合物的脱羧基反应,从而抑制CO2的生成。
, authors=蒋晓燕
1, *, 韩一鸣
1, 李星炜
1, 唐镇涛
1, 徐子劼
1, 王千里
1, 胡斌
2, authorsList=蒋晓燕, 韩一鸣, 李星炜, 唐镇涛, 徐子劼, 王千里, 胡斌, authorCompany=null, correspAuthors=蒋晓燕, authorNote=
, correspAuthorsNote=
, copyrightStatement=版权所有©燃料化学学报(中英文) 2026, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=9V98brpWYqOObqoNqmqNow==, magXml=2uX6CPGHPuVdr0V5KMMbLA==, pdfUrl=null, pdf=Emlur3geUlvFRgsJc5VEMQ==, pdfFileSize=4694261, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=ZtOj3HLnJqaDXCqG4G1hZg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=eZjKL0zL1R3pztHX5JxLUw==, mapNumber=null, fund=null)}, authors=[Author(id=1309633953477259522, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=jiangxy@czust.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1309633953544368388, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, authorId=1309633953477259522, language=EN, stringName=Xiaoyan JIANG, firstName=Xiaoyan, middleName=null, lastName=JIANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Cα位、Cβ位含醛基、羧基的木质素单体模型化合物[16], figureFileSmall=a4LXLp4Qptu7JQjhhTBycA==, figureFileBig=ZtOj3HLnJqaDXCqG4G1hZg==, tableContent=null), ArticleFig(id=1309633957205995822, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.2, caption=
Possible binding sites of alkaline earth metal ions with lignin monomer model compounds M14 and M34, figureFileSmall=73oVW2vh15ffFR6HwmgkLQ==, figureFileBig=cVt9zIHLZDnNNA8rxMOM0g==, tableContent=null), ArticleFig(id=1309633957281493295, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图2, caption=
碱土金属离子与木质素单体模型化合物M14和M34可能的结合位点, figureFileSmall=73oVW2vh15ffFR6HwmgkLQ==, figureFileBig=cVt9zIHLZDnNNA8rxMOM0g==, tableContent=null), ArticleFig(id=1309633957373767984, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.3, caption=
The optimal geometric configurations of the lignin monomer model compounds M1x and M2x catalyzed by alkaline earth metal ions (unit: nm), figureFileSmall=XRpIns03EjZniGn9nql7ew==, figureFileBig=5/oEOkJEKeux8qtIviXKbA==, tableContent=null), ArticleFig(id=1309633957449265457, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图3, caption=
碱土金属离子与木质素单体模型化合物M1x、M2x复合的最优几何构型(单位:nm), figureFileSmall=XRpIns03EjZniGn9nql7ew==, figureFileBig=5/oEOkJEKeux8qtIviXKbA==, tableContent=null), ArticleFig(id=1309633957533151538, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.4, caption=
The optimal geometric configurations of the lignin monomer model compounds M3x and M4x catalyzed by alkaline earth metal ions (unit: nm), figureFileSmall=PJgXXTTu5+HzAlEUFIZNpg==, figureFileBig=QzfM7UuF9pnnHa7PshBgGw==, tableContent=null), ArticleFig(id=1309633957600260403, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图4, caption=
碱土金属离子与木质素单体模型化合物M3x、M4x复合的最优几何构型(单位:nm), figureFileSmall=PJgXXTTu5+HzAlEUFIZNpg==, figureFileBig=QzfM7UuF9pnnHa7PshBgGw==, tableContent=null), ArticleFig(id=1309633957679952180, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.5, caption=
Decarbonylation reaction pathways of lignin monomer model compounds M1x and M2x[16] (with permission from MDPI), figureFileSmall=uYDXVGPtHP5MhYLchyt+yw==, figureFileBig=nB8vXUSZ4pTMwUrjZVtOXw==, tableContent=null), ArticleFig(id=1309633957751255349, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图5, caption=
木质素单体模型化合物M1x、M2x脱羰基反应路径[16], figureFileSmall=uYDXVGPtHP5MhYLchyt+yw==, figureFileBig=nB8vXUSZ4pTMwUrjZVtOXw==, tableContent=null), ArticleFig(id=1309633957835141430, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.6, caption=
Energy barrier comparison for decarbonylation of lignin monomer model compounds M1x and M2x under Ca2+/Mg2+ catalytic and non-catalytic conditions, figureFileSmall=OQ9uSfPk1WeJR8CnuvxeZA==, figureFileBig=ENoAsSTr7YOQOL12+KG7ow==, tableContent=null), ArticleFig(id=1309633957927416119, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图6, caption=
木质素单体模型化合物M1x、M2x在Ca2+/Mg2+催化及非催化条件下脱羰基反应的能垒对比, figureFileSmall=OQ9uSfPk1WeJR8CnuvxeZA==, figureFileBig=ENoAsSTr7YOQOL12+KG7ow==, tableContent=null), ArticleFig(id=1309633958023885112, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.7, caption=
Decarboxylation reaction pathways of lignin monomer model compounds M3x and M4x[16] (with permission from MDPI), figureFileSmall=62G8KfH1NrvoG2TCCKuVrg==, figureFileBig=+PKZD67Nhgw7i+J1/ZqpEg==, tableContent=null), ArticleFig(id=1309633958149714233, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图7, caption=
木质素单体模型化合物M3x、M4x脱羧基反应路径[16], figureFileSmall=62G8KfH1NrvoG2TCCKuVrg==, figureFileBig=+PKZD67Nhgw7i+J1/ZqpEg==, tableContent=null), ArticleFig(id=1309633958246183226, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.8, caption=
Energy barrier comparison for decarboxylation of lignin monomer model compounds M3x and M4x under Ca2+/Mg2+ catalytic and non-catalytic conditions, figureFileSmall=qXX63iUIvHrwSzNUIVCgsQ==, figureFileBig=i606kErIE2Euth/CwWhxBA==, tableContent=null), ArticleFig(id=1309633958552367419, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图8, caption=
木质素单体模型化合物M3x、M4x在Ca2+/Mg2+催化及非催化条件下脱羧基反应的能垒对比, figureFileSmall=qXX63iUIvHrwSzNUIVCgsQ==, figureFileBig=i606kErIE2Euth/CwWhxBA==, tableContent=null), ArticleFig(id=1309633958707556668, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Fig.9, caption=
Geometric optimization configurations and associated parameters for Ca-M43 and Ca-TS43, figureFileSmall=J8xAmXG7I8XTFvxztdxAag==, figureFileBig=kJ0fjPp3vdIoVrt5Gli3CQ==, tableContent=null), ArticleFig(id=1309633958757888317, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=图9, caption=
Ca-M43、Ca-TS43的几何优化构型及相关参数, figureFileSmall=J8xAmXG7I8XTFvxztdxAag==, figureFileBig=kJ0fjPp3vdIoVrt5Gli3CQ==, tableContent=null), ArticleFig(id=1309633958963409214, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Table1, caption=
Reaction energy barriers for decarbonylation of lignin monomer model compounds M1x and M2x under non-catalytic and alkaline earth metal ion-catalytic conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| Type | Substituent | Uncatalyzed /(kJ·mol−1) | Catalyzed /(kJ·mol−1) | | Numerical difference /(kJ·mol−1) |
|---|
| R1 | R2 | R3 | Ca2+ | Mg2+ | | Ca2+ | Mg2+ |
|---|
Benzaldehyde-type lignin monomers | M11 | H | H | H | 383.8 | 345.7 | 311.3 | | −38.1 | −72.5 |
| M12 | OH | H | H | 388.7 | 317.1 | 280.6 | | −71.6 | −108.1 |
| M13 | OH | OCH3 | H | 389.2 | 325.2 | 315.8 | | −64.0 | −73.4 |
| M14 | OH | OCH3 | OCH3 | 387.9 | 324.8 | 318.1 | | −63.1 | −69.8 |
Phenylethanal-type lignin monomers | M21 | H | H | H | 329.9 | 398.9 | 365.1 | | 69.0 | 35.2 |
| M22 | OH | H | H | 332.2 | 375.5 | 371.2 | | 43.3 | 39.0 |
| M23 | OH | OCH3 | H | 336.4 | 290.8 | 291.2 | | −45.6 | −45.2 |
| M24 | OH | OCH3 | OCH3 | 328.1 | 294.6 | 290.9 | | −33.5 | −37.2 |
), ArticleFig(id=1309633959038906687, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=表1, caption=
碱土金属离子催化/非催化条件下木质素单体模型化合物M1x、M2x脱羰基反应的能垒
, figureFileSmall=null, figureFileBig=null, tableContent=
| Type | Substituent | Uncatalyzed /(kJ·mol−1) | Catalyzed /(kJ·mol−1) | | Numerical difference /(kJ·mol−1) |
|---|
| R1 | R2 | R3 | Ca2+ | Mg2+ | | Ca2+ | Mg2+ |
|---|
Benzaldehyde-type lignin monomers | M11 | H | H | H | 383.8 | 345.7 | 311.3 | | −38.1 | −72.5 |
| M12 | OH | H | H | 388.7 | 317.1 | 280.6 | | −71.6 | −108.1 |
| M13 | OH | OCH3 | H | 389.2 | 325.2 | 315.8 | | −64.0 | −73.4 |
| M14 | OH | OCH3 | OCH3 | 387.9 | 324.8 | 318.1 | | −63.1 | −69.8 |
Phenylethanal-type lignin monomers | M21 | H | H | H | 329.9 | 398.9 | 365.1 | | 69.0 | 35.2 |
| M22 | OH | H | H | 332.2 | 375.5 | 371.2 | | 43.3 | 39.0 |
| M23 | OH | OCH3 | H | 336.4 | 290.8 | 291.2 | | −45.6 | −45.2 |
| M24 | OH | OCH3 | OCH3 | 328.1 | 294.6 | 290.9 | | −33.5 | −37.2 |
), ArticleFig(id=1309633959135375680, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=EN, label=Table2, caption=
Reaction energy barriers for decarboxylation of lignin monomer model compounds M3x and M4x under non-catalytic and alkaline earth metal ion-catalytic conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| Type | Substituent | Uncatalyzed /(kJ·mol−1) | Catalyzed /(kJ·mol−1) | | Numerical difference /(kJ·mol−1) |
|---|
| R1 | R2 | R3 | Ca2+ | Mg2+ | | Ca2+ | Mg2+ |
|---|
Benzoic acid-type lignin monomers | M31 | H | H | H | 299.9 | 359.7 | 365.6 | | 59.8 | 65.7 |
| M32 | OH | H | H | 290.9 | 370.3 | 313.2 | | 79.4 | 22.3 |
| M33 | OH | OCH3 | H | 288.6 | 321.4 | 314.3 | | 32.8 | 25.7 |
| M34 | OH | OCH3 | OCH3 | 287.2 | 315.9 | 314.6 | | 28.7 | 27.4 |
Phenylacetic acid-type lignin monomers | M41 | H | H | H | 294.4 | 356.6 | 368.2 | | 62.2 | 73.8 |
| M42 | OH | H | H | 296.4 | 356.4 | 367.8 | | 60.0 | 71.4 |
| M43 | OH | OCH3 | H | 297.8 | 281.7 | 305.1 | | −16.1 | 7.3 |
| M44 | OH | OCH3 | OCH3 | 295.9 | 305.5 | 304.3 | | 9.6 | 8.4 |
), ArticleFig(id=1309633959223456065, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309633949056463074, language=CN, label=表2, caption=
碱土金属离子催化/非催化条件下木质素单体模型化合物M3x、M4x脱羧基反应的能垒
, figureFileSmall=null, figureFileBig=null, tableContent=
| Type | Substituent | Uncatalyzed /(kJ·mol−1) | Catalyzed /(kJ·mol−1) | | Numerical difference /(kJ·mol−1) |
|---|
| R1 | R2 | R3 | Ca2+ | Mg2+ | | Ca2+ | Mg2+ |
|---|
Benzoic acid-type lignin monomers | M31 | H | H | H | 299.9 | 359.7 | 365.6 | | 59.8 | 65.7 |
| M32 | OH | H | H | 290.9 | 370.3 | 313.2 | | 79.4 | 22.3 |
| M33 | OH | OCH3 | H | 288.6 | 321.4 | 314.3 | | 32.8 | 25.7 |
| M34 | OH | OCH3 | OCH3 | 287.2 | 315.9 | 314.6 | | 28.7 | 27.4 |
Phenylacetic acid-type lignin monomers | M41 | H | H | H | 294.4 | 356.6 | 368.2 | | 62.2 | 73.8 |
| M42 | OH | H | H | 296.4 | 356.4 | 367.8 | | 60.0 | 71.4 |
| M43 | OH | OCH3 | H | 297.8 | 281.7 | 305.1 | | −16.1 | 7.3 |
| M44 | OH | OCH3 | OCH3 | 295.9 | 305.5 | 304.3 | | 9.6 | 8.4 |
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