Journal of Analytical and Applied Pyrolysis最新文献

{"title":"Effects of ammonia on coal pyrolysis products and nitrogen migration: Insights from SR-PIMS experiments combined with molecular dynamics simulations","authors":"Mengchuan Jia ,&nbsp;Sheng Su ,&nbsp;Zhixiang Zhu ,&nbsp;Wei Deng ,&nbsp;Kai Xu ,&nbsp;Long Jiang ,&nbsp;Jun Xu ,&nbsp;Yi Wang ,&nbsp;Song Hu ,&nbsp;Jun Xiang","doi":"10.1016/j.jaap.2025.107581","DOIUrl":"10.1016/j.jaap.2025.107581","url":null,"abstract":"<div><div>As a promising clean combustion technology, coal/NH₃ co-firing contributes significantly to “Dual Carbon” goals. Co-pyrolysis of coal/NH₃ is a critical initial stage of co-combustion, profoundly influencing combustion characteristics and pollutant formation. A deep understanding of the influence of NH₃ on coal pyrolysis process and the transformation of nitrogen-containing products is crucial for controlling subsequent combustion behavior and pollutant formation. In this study, synchrotron radiation photoionization mass spectrometry (SR-PIMS) experiments were combined with ReaxFF MD simulations to elucidate the influence of NH₃ on coal pyrolysis products, char structure, and nitrogen migration mechanisms. SR-PIMS results demonstrated that NH₃ generally suppressed the formation of hydrocarbons (<em>m/z</em> ≤ 104) and oxygenated compounds (<em>m/z</em> ≤ 118) in coal pyrolysis products, while promoting the generation of nitrogen-containing compounds (<em>m/z</em> ≤ 107). ReaxFF MD simulations revealed that radicals such as H· and NH₂· derived from NH₃ decomposition react with hydrocarbon radicals (C₆H₄, etc.) and oxygen-containing radicals (C₅H₉O₂, etc.) produced by coal pyrolysis, stabilizing hydrocarbon and oxygen-containing radicals into stable compounds (C₆H₆, C₅H₁₀O₂, etc.). This process suppresses their further reactions and decomposition, thereby inhibiting the evolution of hydrocarbons and oxygenates. Ultimate analysis and Raman spectroscopy of char also indicated that coal/NH₃ co-pyrolysis char exhibits a higher H/C ratio, with NH₃ inhibiting char aromatization and graphitization. Meanwhile, nitrogen-containing radicals derived from NH₃ embed into the carbon matrix, promoting the formation of nitrogen-containing compounds in char, and increasing nitrogen content in both volatiles and char, which was proved by SR-PIMS and ultimate analysis of char. The nitrogen migration mechanism revealed by ReaxFF MD simulations, consisting with XPS results, showed that during primary cracking, ammonia nitrogen primarily migrates via NH₂ bonding to aliphatic chains to form aliphatic amines, which cyclize into N-5/N-6 species during secondary reactions. Temperature elevation accelerates the conversion from N-5 to N-6 with minor N-Q formation. Notably, NH₃ directly promotes ring-opening of N-5 and N-6 in coal, converting them into nitrogen-containing long chains, promoting HCN and NH₃ formation, causing a faster decline in coal nitrogen content. This process destabilizes derived aliphatic ring structures, which is unfavorable to char aromatization and graphitization. This work provides theoretical and data support for optimizing coal/NH₃ co-firing technology.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107581"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in copyrolysis of algal biomass with waste plastics for the production of upgraded oil","authors":"Shayan Ebadi ,&nbsp;Jechan Lee ,&nbsp;Hyungseok Nam ,&nbsp;Sungyup Jung ,&nbsp;Myung Won Seo ,&nbsp;Doyeon Lee ,&nbsp;Young-Kwon Park","doi":"10.1016/j.jaap.2025.107538","DOIUrl":"10.1016/j.jaap.2025.107538","url":null,"abstract":"<div><div>Co-pyrolysis of algae with common plastics (PET, HDPE, LDPE, PVC, PP, and PS) has emerged as a promising thermochemical pathway for simultaneously valorizing renewable biomass and polymeric wastes. This review synthesizes recent advances in mechanistic interactions, kinetic behavior, and liquid-phase product evolution in algae–plastic systems. Across polymers, co-pyrolysis consistently lowers activation energy, enhances devolatilization, increases oil yields beyond theoretical predictions, and suppresses oxygenated and nitrogenated compounds compared with algae alone. Polyolefins act as hydrogen donors that promote deoxygenation and denitrogenation; PET enhances decarboxylation and increases aromatic hydrocarbons; PVC accelerates volatilization through early HCl release with efficient chlorine capture; and PS contributes aromatic fragments that dilute heteroatom-rich vapors. These synergistic pathways generate hydrocarbon-rich oils with fuel-range heating values (∼42–47 MJ/kg) and improved physicochemical properties after catalytic upgrading or hydrotreatment. Key operational variables—including blending ratio, temperature, heating rate, reactor design, and catalyst formulation—strongly influence oil composition and fuel applicability. By integrating mechanistic insights with process-level outcomes, this review clarifies the potential of algae–plastic co-pyrolysis as a viable route for producing energy-dense liquids within circular waste-to-fuel strategies.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107538"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ex-situ catalytic pyrolysis of low-density polyethylene for jet-fuel range hydrocarbons production over H2O2-modified activated carbon","authors":"Sihai Ni,&nbsp;Yi Shao,&nbsp;Jingjing Wang,&nbsp;Ning Deng,&nbsp;Liangyuan Jia","doi":"10.1016/j.jaap.2025.107565","DOIUrl":"10.1016/j.jaap.2025.107565","url":null,"abstract":"<div><div>The H₂O₂-activated carbon (OAC) was used for the first time for ex-situ catalytic pyrolysis of low-density polyethylene (LDPE) to produce jet fuel-range hydrocarbons. Controlled H₂O₂ treatment introduces hydroxy groups to optimize surface acidity and pore structure, thereby balancing C-C cleavage and alkane-to-aromatic conversion. The produced jet fuel-range hydrocarbons (C8-C16) comprise approximately 80 % linear/cyclic alkanes and 20 % mono-aromatics, meeting aviation fuel requirement. Meanwhile, under optimal hydrocarbon distribution conditions, 90.90 wt% liquid hydrocarbon yield with 93.75 % C8-C16 selectivity was achieved. Besides, temperature-controlled experiments demonstrate tunable product distribution across diesel, jet fuel, and gasoline ranges can be obtained, highlighting the process flexibility. In addition, the catalyst maintains high C8-C16 selectivity (&gt; 80 %) after 10 reaction cycles. Mechanistically, appropriate surface -OH groups promote alkane formation while suppressing excessive aromatization, enabling the high-yield production of target hydrocarbons. OACs, as low-cost, easily prepared, highly efficient, and stable catalysts, enable economical jet fuel production from the catalytic pyrolysis of waste plastics.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107565"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of pitch source on oxidation reactivity and thermal conversion behavior","authors":"Jiaxing Yue,&nbsp;Xiliang Wen,&nbsp;Yaming Zhu,&nbsp;Jianfeng Deng,&nbsp;Junxia Cheng,&nbsp;Xuefei Zhao","doi":"10.1016/j.jaap.2025.107551","DOIUrl":"10.1016/j.jaap.2025.107551","url":null,"abstract":"<div><div>Oxidation modification is a crucial method for preparing pitch-based carbon materials. To deeper understand the influence of this process on different types of pitches, five pitches with varying sources and properties were selected, and their softening points were adjusted to a similar range through oxidation. Then,various analytical techniques were used to compare their oxidation reactivity, structural parameters, thermal stability, and thermal conversion behavior. The results showed that medium-low temperature coal pitch (MLP) and ethylene tar pitch (ETP) had higher molecular weights, more alkyl side chains, and lower aromatic condensation degree. They exhibited poor thermal stability and high oxidation reactivity. After oxidation, they contained more C(O)-O groups, making them more prone to in-situ coking during thermal conversion. The thermal conversion products were more disordered, and mainly exhibited optical mosaic structure. In contrast, modified pitch (MP) and soft pitch (SP) had higher aromatic condensation degree, better thermal stability, and lower molecular weights. The oxidation mainly produced ether bonds and hydroxyl groups with C-O structures, and their thermal conversion products showed higher graphitization degree. Under polarizing microscope, they exhibiting clearly delineated fibrous flow domain structure. This work provides a theoretical foundation and experimental support for the high-value utilization of pitch and the controllable preparation of high-performance carbon materials.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107551"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of sulfur doping on porous carbon for carbon dioxide adsorption","authors":"Yifan Kang ,&nbsp;Bin Zhou ,&nbsp;Tai Feng,&nbsp;Hao Wang,&nbsp;Yueyang Wang,&nbsp;Peichao Qu,&nbsp;Guoliang Liu,&nbsp;Cuiping Wang","doi":"10.1016/j.jaap.2025.107549","DOIUrl":"10.1016/j.jaap.2025.107549","url":null,"abstract":"<div><div>Porous carbon has garnered significant attention as a material for CO₂ adsorption due to its widely sourced, low cost, high porosity, chemical stability, rapid adsorption-desorption kinetics, and strong resistance to water. In order to enhance the interaction between carbon dioxide molecules and carbon surface, heteroatom doping is a common method to change the inherent non-polar properties of porous carbon. Among various doping strategies, sulfur doping stands out for its ability to expand interlayer spacing and modify the local electronic structure. This review comprehensively examines the mechanisms and performance of CO₂ adsorption by S-doped carbon materials. It first introduces the types of S-containing functional groups and their characterization methods. Next, it summarizes the preparation approaches for S-doped porous carbon, which include endogenous sulfur-carbon co-source methods, exogenous sulfur-loading methods, and synergistic endogenous-exogenous doping strategies. Subsequently, the effects of pore structure and functional groups on CO₂ adsorption performance are discussed, with insights drawn from density functional theory (DFT)，grand canonical Monte Carlo (GCMC) calculation, and experimental studies. Finally, the review explores the impact of co-doping sulfur with other elements, such as nitrogen and oxygen, on the CO₂ adsorption performance. This work provides a detailed overview of the characterization, preparation, and physicochemical properties of S-doped porous carbons, alongside their influence on CO₂ adsorption. It highlights the practical prospects and challenges of these materials, offering valuable insights to guide future research.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107549"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of sheet-like core-shell structured ZSM-5/SiO2 zeolite for catalytic pyrolysis of low-density polyethylene to produce low-carbon olefins","authors":"Ting Zhao ,&nbsp;Longshan Shen ,&nbsp;Wenyu Lu ,&nbsp;Yufei Gu ,&nbsp;Yanmei Huang ,&nbsp;Wei Wang ,&nbsp;Zhixia Li ,&nbsp;Hongfei Lin","doi":"10.1016/j.jaap.2025.107557","DOIUrl":"10.1016/j.jaap.2025.107557","url":null,"abstract":"<div><div>In this study, a core-shell structured ZSM-5/SiO₂ zeolite (ZSCS50) was successfully synthesized using a two-step hydrothermal crystallization method coupled with a low-temperature sol–gel strategy. The core is composed of sheet-like microporous ZSM-5 (<em>b</em>-axis length ≈ 220 nm), while the shell consists of mesoporous SiO₂ with a ribbon-corrugated structure, thus forming a composite zeolite with a hierarchical porous architecture. ZSCS50 exhibits high specific surface area (323 m²/g) and abundant weak acid sites. During the catalytic pyrolysis of low-density polyethylene (LDPE) at 550 °C, a gas yield of 85.3 % was achieved, with a selectivity of 68.4 % for low-carbon olefins (ethylene, propylene, and butylene). After 8 consecutive catalytic pyrolysis cycles of LDPE, ZSCS50 still maintained a gas yield of 87.5 % and a low-carbon olefin selectivity of 62 %, which were significantly higher than those of the uncoated core ZSM-5 (84.8 % and 47.8 %, respectively). ZSCS50 demonstrates excellent coking resistance, catalytic activity, and operational stability, and exhibits great application potential in the efficient conversion of waste plastics into high-value-added light olefins via catalytic pyrolysis.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107557"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase behavior prediction of medium to high maturity shale oil in the Songliao Basin: Insights from compositional generation kinetics","authors":"Bo Song ,&nbsp;Fangwen Chen ,&nbsp;Shuangfang Lu ,&nbsp;Min Wang ,&nbsp;Ming Li ,&nbsp;Jinbu Li ,&nbsp;Nengwu Zhou ,&nbsp;Wenbiao Li","doi":"10.1016/j.jaap.2025.107547","DOIUrl":"10.1016/j.jaap.2025.107547","url":null,"abstract":"<div><div>Accurate prediction of hydrocarbon composition is essential for evaluating hydrocarbon quality and recoverability. However, research on pre-drilling prediction of subsurface fluid phase behavior for medium to highmaturity shale oil remains limited. Given that compositional kinetics can effectively evaluate and predict the compositional evolution of shale oil and gas reservoirs, this study focuses on the first member of the Qingshankou Formation (K₂qn₁) in the Songliao Basin. Based on gold-tube hydrocarbon generation simulation experiments, a compositional generation and cracking kinetic model, and a methane correction model derived from pressurized coring, we accurately predicted the phase behavior of medium to high maturity shale oil in the Songliao basin. The results indicate that the difference in methane content between natural and experiment samples is not caused by migration-induced fractionation. Instead, it is likely due to the relatively high temperature and pressure in the experiments, which may cause hydrocarbon fluids to enter a single gas phase prematurely, thereby suppressing methane generation. The discrepancy between the corrected predicted phase diagram and the PVT experiment phase envelope is attributed to light hydrocarbon loss during PVT experiments, as supported by phase envelope simulations under varying degrees of light hydrocarbon depletion. The predicted phase diagram shows that the present day Gulong Sag is a volatile oil reservoir and that a single episode of hydrocarbon migration and fractionation occurred around 66 Ma. This study provides a basis for assessing the phase behavior, mobility, and recoverability of medium- to high-maturity shale oil and gas reservoirs under geological conditions.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107547"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degradative catalyst solvent extraction and oxidative cracking in humic acid synthesis from municipal sludge","authors":"De-lin Fu,&nbsp;Feng Duan,&nbsp;Li-hui Zhang","doi":"10.1016/j.jaap.2025.107504","DOIUrl":"10.1016/j.jaap.2025.107504","url":null,"abstract":"<div><div>The sustainable conversion of municipal sludge (MS) into humic acid (HA) represents a pivotal strategy for advancing solid waste valorization. However, its high ash and low fixed carbon contents restrict the recovery efficiency of HA.This study introduces an innovative integrated approach combining degradative catalytic solvent extraction and oxidative cracking to achieve efficient HA synthesis.The effects of the temperature, time, pressure and liquid-solid ratio on the HA yield using catalytic extraction product were investigated. Through GC-MS analysis, combined with FTIR and XPS analysis, the reaction mechanism of synthesis was revealed. The results showed that the maximal yield of HA using raw sludge is only 1.85 %. The HA yield of the catalytic extraction products increased by about 22 %, which was 13 times of raw sludge, confirming the superior performance of the proposed method. Acidic sites on HZSM-5 facilitated olefin formation and subsequent aromatization into monoaromatic hydrocarbons (MAHs), benzene derivatives, and polycyclic aromatic hydrocarbons (PAHs), driving a significant rise in fixed carbon content (3.46–48.19 %). Key process limitations were identified as residual ash content (reduced to 6.29 %) and insufficient aromatization efficiency during oxidative cracking. These findings establish a technical foundation for high-value resource recovery from municipal sludge while addressing critical challenges in waste-to-product conversion.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107504"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upgradation of food waste hydrochar to value-added supercapacitor carbon material: Parametric optimization and hydrothermal temperature effect","authors":"Che Liu ,&nbsp;Jingchun Huang ,&nbsp;Di Xie ,&nbsp;Chang Wen ,&nbsp;Qianshi Song ,&nbsp;Yu Qiao","doi":"10.1016/j.jaap.2025.107534","DOIUrl":"10.1016/j.jaap.2025.107534","url":null,"abstract":"<div><div>The activation of food waste hydrochar is a promising method to produce activated carbon (AC) using as EDLC electrode material. This study aims to optimize various preparation conditions (hydrothermal temperature, activation temperature, solid alkali ratio, and activation time) via response surface methodology (RSM), with the focus on the effect of hydrothermal temperature on the electrochemical performance of AC. The hydrothermal temperature had the greatest impact on the electrochemical performance of AC, followed by activation time, solid alkali ratio, and activation temperature. The optimal hydrothermal temperature, activation temperature, solid alkali ratio, and activation time was 213 ℃, 724 ℃, 2.5, and 2.8 h, respectively, calculated from 30 groups of RSM experiments. Under the optimal conditions, the AC showed a high specific surface area (2333 m²/g) and well distribution of nitrogen (e.g., rich in pyrrolic-N), leading to its high specific capacitance of 355.3 F/g at 0.5 A/g, with an error of 1.13 % compare to the maximum predicted value. Low hydrothermal temperature (e.g., ∼190 ℃) is not conducive to the formation of micropore/mesoporous structure in AC, as well as the pyrrolic-N and graphitic-N, resulting in a low specific capacitance of 241.9 F/g at 0.5 A/g. High hydrothermal temperature (e.g., ∼230 ℃) would inhibit the generation of micropore structure and enhance the formation of graphitic-N in AC. Thus, a medium hydrothermal temperature (e.g., ∼210 ℃) is necessary to prepare AC with well specific capacitance. The results can give a guidance to optimize the preparation parameters from food waste to efficient and cost-effective electrode carbon materials.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107534"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on plasma pretreatment of lignin to inhibiting pyrolysis intermediate polymerization and promoting Mo/ZSM-5 catalytic pyrolysis","authors":"Jiajun Yu ,&nbsp;Kai Wu ,&nbsp;Longfei Hong ,&nbsp;Liangdong Hu ,&nbsp;Xiujuan Feng ,&nbsp;Huiyan Zhang","doi":"10.1016/j.jaap.2025.107574","DOIUrl":"10.1016/j.jaap.2025.107574","url":null,"abstract":"<div><div>Catalytic pyrolysis of lignin can produce renewable aromatics in one step, but the development of this process is severely constrained by problems such as high-temperature polymerization and catalyst coking. Here, we propose a method combining plasma rapid pretreatment with catalyst modification to efficiently convert lignin into aromatics through catalytic pyrolysis. Pyrolysis tests of lignin derivatives show that large amounts of oligomers form after pyrolysis of guaiacol and syringol, and intramolecular interactions between methoxy and hydroxyl groups are the main factors contributing to lignin intermediate polymerization during pyrolysis. Plasma pretreatment can rapidly break some connecting bonds and methoxy groups, significantly inhibiting secondary polymerization of intermediates and oligomer formation during pyrolysis, thus promoting the generation of lignin pyrolysis monomer phenols. Mo-modified ZSM-5 can enhance catalytic cracking and deoxygenation performance while reducing the formation of coke precursors such as naphthalene (drops from 1.45 to 1.03 wt%). Converting pretreated lignin to aromatics using Mo-modified ZSM-5 increases the yield to 6.0 wt%, while simultaneously suppressing intermediate polymerization and coking. Overall, this work demonstrates the inhibition mechanism of lignin pretreatment combined with Mo modification on polymerization and coking during lignin catalytic pyrolysis, providing a simple and environmentally friendly approach for the efficient pyrolysis of lignin.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"194 ","pages":"Article 107574"},"PeriodicalIF":6.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}