Journal of Analytical and Applied Pyrolysis最新文献

{"title":"Transition-metal-assisted pyrolysis to recover glass fibers from end-of-life wind turbine blades","authors":"Qiang Lu ,&nbsp;Haiwen Ji ,&nbsp;Yiye Lu ,&nbsp;Jie Yang ,&nbsp;Weiwei Chen ,&nbsp;Jihong Li ,&nbsp;Wei Li ,&nbsp;Mingxin Xu","doi":"10.1016/j.jaap.2025.107081","DOIUrl":"10.1016/j.jaap.2025.107081","url":null,"abstract":"<div><div>The disposal of end-of-life wind turbine blades (WTBs), typically composed of glass fiber-reinforced epoxy resin thermosetting composites, has become a global environmental challenge. Pyrolysis is an effective method for recycling these WTBs, but the process often leads to significant degradation of recovered fibers due to high pyrolysis temperatures. This study proposed a transition-metal-assisted pyrolysis method to enhance the low-temperature depolymerization of end-of-life WTBs, enabling the recovery of glass fibers with improved mechanical properties. With the assistance of ZrCl₄, the resin decomposition ratio of WTBs at 350 °C increased from 52.13 % to 75.59 %, and the tensile strength of the recovered glass fibers improved by 34.74 %. Characterization studies revealed that Zr^4 + ions accelerated the breakdown of C-O-C bonds within the epoxy resin, promoting its decomposition. Additionally, Zr⁴⁺ ions weakened polycondensation and dehydrogenation reactions during the formation of pyrolysis char, reducing its degree of graphitization and improving its oxidative reactivity, thereby shortening the oxidation duration. Consequently, the diffusion of surface defects in the recovered fibers was suppressed, significantly enhancing their mechanical properties. These findings offer valuable insights into addressing the disposal of end-of-life WTBs while simultaneously recovering glass fibers with excellent mechanical properties, thus supporting their circular utilization.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107081"},"PeriodicalIF":5.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563393","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":"Fast pyrolysis of baked wheat straw catalyzed by Fe-Ni modified composite porous molecular sieves for the preparation of aromatics","authors":"Huimin Mao,&nbsp;Zhengye Chen,&nbsp;Hong Tian,&nbsp;Shan Cheng,&nbsp;Lei Liu,&nbsp;Yanni Xuan,&nbsp;Yanshan Yin","doi":"10.1016/j.jaap.2025.107088","DOIUrl":"10.1016/j.jaap.2025.107088","url":null,"abstract":"<div><div>Wheat straw (WS) baked at 260°C is used as raw material. The HZSM-5 was modified through alkali treatment (NaOH) and metal loading (Ni, Fe), followed by the introduction of MCM-41 layers onto the modified HZSM-5 to synthesize composite pore zeolites. A tubular furnace and Py-GC/MS were used to investigate the effects of different composite pore catalysts on the three-phase products and the distribution of bio-oil components during the catalytic fast pyrolysis(CFP) of WS. The use of 1 %FeAZ@M as a catalyst achieved the highest bio-oil yield (31.31 %). Introducing the micro-meso composite pore zeolite 0.3AZ@M as a catalyst resulted in the highest selectivity of monocyclic aromatic hydrocarbons (MAHs) in the bio-oil from WS CFP (52.12 %), along with a bio-oil yield of 26.50 %. The metal-modified composite pore zeolites exhibit enhanced acidity, which can further enhance the composition distribution in the bio-oil. The use of 1 %NiAZ@M as a catalyst resulted in the highest production of MAHs in the bio-oil from WS of CFP (60.67 %), with a bio-oil yield of 23.27 %. Among the bimetal-modified composite pore zeolites, 1 %Ni1 %FeAZ@M demonstrated the highest selectivity for MAHs, with MAHs in the bio-oil reaching 66.36 %, while the bio-oil yield increased to 28.41 %.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107088"},"PeriodicalIF":5.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593129","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":"Sulfur dioxide extrusion: Exploring the mechanism behind the formation of highly reactive 5-(trifluoromethyl)azafulvenium methide intermediates","authors":"Diana C. Pinilla Peña ,&nbsp;Guadalupe Firpo ,&nbsp;Noelia M. Ceballos ,&nbsp;Federico J. Velazco ,&nbsp;Gloria Patricia Camargo Solorzano ,&nbsp;María I. L. Soares ,&nbsp;Liliana B. Pierella ,&nbsp;Teresa M.V.D. Pinho e Melo ,&nbsp;Walter J. Peláez","doi":"10.1016/j.jaap.2025.107085","DOIUrl":"10.1016/j.jaap.2025.107085","url":null,"abstract":"<div><div>Pyrolysis reactions of 2,2-dioxo-7-(trifluoromethyl)-1<em>H</em>,3<em>H</em>-pyrrolo[1,2-<em>c</em>]thiazoles are presented. Thermal reactions lead to the formation of noteworthy 5-membered heterocyclic products, whose yields were higher when FVPN2 was performed compared to other synthetic pyrolysis methods, such as microwave-induced pyrolysis (MWIP) or conventional heating (reflux). Trifluoromethyl-substituted pyrroles were obtained via rearrangements of trifluoromethyl-azafulvenium-methide intermediates. The experimental Arrhenius parameters of FVPN2 are presented for the very first time, and the results enable the proposal of three distinct mechanistic pathways for the SO₂ extrusion process occurring at high temperatures. Quantum chemical calculations performed at the DFT level of theory provided a rational explanation for the observed results.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107085"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563394","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":"Differences in pyrolysis behaviors of tar-rich coal macerals from various paleosedimentary environments","authors":"Yaya Shi ,&nbsp;Qingmin Shi ,&nbsp;Shuangming Wang ,&nbsp;Chunhao Li ,&nbsp;Shidong Cui ,&nbsp;Fu Yang ,&nbsp;Bingyang Kou","doi":"10.1016/j.jaap.2025.107067","DOIUrl":"10.1016/j.jaap.2025.107067","url":null,"abstract":"<div><div>Tar-rich coal, a valuable resource for China's energy security, undergoes the production of tar and gas during pyrolysis. This study combines proximate and ultimate analyses with TGA and in-situ FTIR to investigate the molecular structure of raw coal and its macerals from three coal-forming environments. The results indicate that the paleosedimentary environment significantly affects coal structure, especially the aliphatic and aromatic structures, as well as oxygenated functional groups. Deeper overlying water and more reducing conditions foster the formation of aliphatic structures, which are abundant in vitrinite-rich concentrates and raw coal, whereas inertinite-rich concentrates contain fewer. During pyrolysis, aromatic C-H condensation results in the formation of semi-coke and coke. Raw coal and macerals from deeper, reducing environments decompose more rapidly, accelerating aromatic condensation. Additionally, volatile gases such as H₂, CO, CO₂, CH₄, and tar are generated during pyrolysis. CO and CO₂ mainly originate from the cracking of oxygenated functional groups. Xinjiang raw coal(T1-R(V)), formed under deep overlying water, exhibits intense decomposition due to the high content of oxygenated functional groups in aliphatic side chains. Xiwan coal(T3), from a wet forest swamp environment, has numerous oxygenated groups, leading to higher decomposition rates in raw coal and inertinite-rich concentrates. Aliphatic cracking releases hydrocarbon gases and tar, with faster decomposition occurring in deeper, reducing environments. The thermal decomposition rates of vitrinite-rich concentrates show minimal variation. These findings underscore the influence of coal-forming environments on pyrolysis, facilitating the efficient utilization of tar-rich coal.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107067"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549743","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":"Enhancing mass transfer efficiency via “Burger” co-pyrolysis of plastics and three biomass components","authors":"Jiahui Zhang ,&nbsp;Linyao Ke ,&nbsp;Qiuhao Wu ,&nbsp;Liangliang Fan ,&nbsp;Krik Cobb ,&nbsp;Roger Ruan ,&nbsp;Yunpu Wang","doi":"10.1016/j.jaap.2025.107084","DOIUrl":"10.1016/j.jaap.2025.107084","url":null,"abstract":"<div><div>Enhancing the target product yields from co-pyrolysis of plastic and biomass relies on the synergetic interaction of their intermediate products. Therefore, a key factor in strengthening this synergy is increasing the yield of both feedstocks’ intermediate products. The study innovatively utilizes the “Burger” layered filling strategy to alter the mass transfer process and affect the yield of key intermediate products. In the traditional homogenous blending mode, the plastic will first melt and encapsulate biomass during the heating process to block the mass transfer process, thus limiting their interaction. However, the “Burger” layered method mitigates mass transfer constraints and has a positive impact on increasing the relative content of key intermediates and aromatic hydrocarbons. For instance, compared to the homogeneous blending pyrolysis of low-density polyethylene and lignin, the layered pyrolysis increased the relative content of phenolic compounds, which are key intermediates during lignin pyrolysis, from 9.02 % to 13.49 %. In the co-pyrolysis of polypropylene and hemicellulose, the layered pyrolysis increased the relative content of aromatic hydrocarbons from 8.59 % to 11.03 %. This investigation offers valuable insights into optimizing mass transfer in the co-pyrolysis process, aiming to advancing the overall efficiency of co-pyrolysis.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107084"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578466","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":"Investigation of the characteristics of microwave-assisted co-pyrolysis of biomass and waste plastics based on orthogonal experimental methods: Thermal degradation, kinetics and product distribution","authors":"Wen Teng ,&nbsp;Zhaosheng Yu ,&nbsp;Gao Shen ,&nbsp;Huirong Ni ,&nbsp;Xiaoqian Ma","doi":"10.1016/j.jaap.2025.107083","DOIUrl":"10.1016/j.jaap.2025.107083","url":null,"abstract":"<div><div>This research explores the synergistic effects and distribution of liquid products during microwave-assisted co-pyrolysis (MACP) of eucalyptus wood (EW) and polypropylene (PP). Firstly, thermal degradation and kinetics, of co-pyrolysis of EW and PP were investigated. The minimum average activation energy was observed at a mixing ratio of 50 % EW to 50 % PP, measuring 187.98 kJ/mol (KAS) and 189.82 kJ/mol (OFW), respectively. The effects of pyrolysis temperature, material ratio and microwave absorbent amount on the MACP of EW and PP were investigated based on the Orthogonal Design of Experiments (OED) method. The yield of three-phase product and chemical composition of liquid product were analyzed. The results indicated that the MACP of EW and PP significantly enhanced both the yield and quality of bio-oil. Optimal oil yield was achieved through MACP of EW and PP at 550℃ with a ratio of 30 % EW, 70 % PP, and 120 wt% microwave absorbent (SiC). The content of aromatic hydrocarbons peaked at the material ratio of 50 % EW and 50 % PP (E5P5) (42.53 %), while the content of monocyclic aromatic hydrocarbons (MAHs) was 3.59 %. The peak content of MAHs occurred at 550 ℃, but further temperature increase resulted in the transformation of MAHs into polycyclic aromatic hydrocarbons (PAHs). To optimize the content of MAHs in pyrolysis oil, the optimal MACP conditions are 550 ℃, E5P5 and 120 wt%SiC. The results of this research can act as a significant reference and offer practical insights for the effective generation of hydrocarbon-rich bio-oil via the MACP process involving biomass and waste plastics.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107083"},"PeriodicalIF":5.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549747","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":"Comprehensive valorization of oil-rich food waste through coupling transesterification with pyrolysis","authors":"Gyeongnam Park ,&nbsp;Taewoo Lee ,&nbsp;Jung-Hun Kim ,&nbsp;Hocheol Song ,&nbsp;Wei-Hsin Chen ,&nbsp;Eilhann E. Kwon","doi":"10.1016/j.jaap.2025.107082","DOIUrl":"10.1016/j.jaap.2025.107082","url":null,"abstract":"<div><div>Recent shifts in food consumption trends toward fried foods have increased the generation of oil-rich food waste. Although biological processes show promise for the food waste valorization, the presence of oil components limits microbial activity. This study proposes a thermochemical approach for valorizing oil-rich fried debris, a by-product of deep-frying, by coupling transesterification with pyrolysis. Characterization of fried-debris-extracted oil (FDO) revealed high impurity levels, free fatty acids and aldehydes. This necessitates transesterification method with more tolerance to these impurities than the conventional acid-treated process. A thermally-induced transesterification demonstrated the impurity tolerance, representing biodiesel yield exceeding 95 wt% regardless of the mixing ratio of aldehyde-to-refined olive oil. When applying to FDO, this process yielded a consistent biodiesel output (41.1 wt%), representing a 1.43-fold increase compared with the conventional transesterification. As a strategy for the comprehensive valorization of fried debris, de-fatted fried debris (DFD) remaining after oil extraction was further pyrolyzed. To impart a sustainability to the pyrolysis system, CO₂ was employed as a reactive agent. CO₂ showed a reactivity of converting DFD-derived volatiles into syngas, particularly CO, while producing biochar. The CO₂ reactivity was accelerated when conducting catalytic pyrolysis over Ni catalyst, resulting in 71.43 wt% syngas and 18.47 wt% biochar. To evaluate the environmental benefits of this process, the CO₂ mitigation potential of biodiesel, syngas, and biochar was estimated, representing an annual reduction of 14.24 × 10⁸ kg CO₂ in South Korea.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107082"},"PeriodicalIF":5.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549745","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 the thermal decomposition behavior of methyl ethyl ketone peroxide in acid, alkali and water environments","authors":"Zhen Xu,&nbsp;Wei Gao","doi":"10.1016/j.jaap.2025.107078","DOIUrl":"10.1016/j.jaap.2025.107078","url":null,"abstract":"<div><div>Methyl ethyl ketone peroxide (MEKPO) is a highly reactive chemical substance that exhibits different thermal decomposition behaviors under different environmental conditions such as acid, alkali, and water. This article uses a microcalorimeter (C80) and a thermogravimetric infrared mass spectrometry (TGA-IR-GC/MS) system to study the thermal decomposition characteristics of MEKPO doped with different mass fractions of water (H₂O), dilute sulfuric acid (H₂SO₄), and sodium hydroxide solution (NaOH), including changes in kinetic parameters and reaction pathways. The results indicate that MEKPO pyrolysis is divided into two steps, with the first stage being the main one. The reaction rate is highest at the beginning of the reaction and then decreases continuously with the increase of conversion degree. The increase in acid and water content promotes the two-step decomposition of MEKPO, reducing the initial decomposition temperature of its main exothermic peak (Peak I) by 11.8℃ and 9.3℃, respectively The total heat release increased by 40.5 % and 37.9 %. Adding alkali will make the thermal decomposition of MEKPO more concentrated in the early stage of the reaction (50–150℃), and induce two unseparated exothermic peaks during this stage. The pyrolysis products of MEKPO mainly include CH₂O₂, CH₃O, C₂H₄O₂, C₄H₈O, C₃H₆O₂, C₅H₁₂O, C₄H₁₀O₃, etc. Adding acid, alkali, and water can affect the peak time of some products, and even cause some products to completely disappear, thereby affecting the mechanism of the entire decomposition reaction.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107078"},"PeriodicalIF":5.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563224","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":"Efficient catalytic hydroconversion of phenolic-rich aromatic compounds from the extraction of coal tar residue to cyclanes over a β/M composite zeolite-supported Ni nanoparticles","authors":"Wen-Ao Shi ,&nbsp;Zhong-Hao Jiang ,&nbsp;Ni Bai ,&nbsp;Ai-Min Wang ,&nbsp;Ai-Rong Mao ,&nbsp;Zi-Long Zhao ,&nbsp;Lin Lang ,&nbsp;Jian Wei ,&nbsp;Hai-Yan Liu ,&nbsp;Qing-Qing Sun ,&nbsp;Yong Gao ,&nbsp;Yu-Hong Kang ,&nbsp;Yan-Jun Li ,&nbsp;Jin-Jun Bai","doi":"10.1016/j.jaap.2025.107069","DOIUrl":"10.1016/j.jaap.2025.107069","url":null,"abstract":"<div><div>The separation of condensed aromatic compounds from coal tar residue (CTR), converted into cyclanes via catalytic hydroconversion (CHC) to produce essential blending components for coal-based jet fuel, represents a significant strategy for enhancing CTR's value. A highly efficient bifunctional catalyst was prepared by loading Ni nanoparticles (NNPs, <em>ca</em>. 10 %) on <em>β</em>/MCM-41 composite zeolite (<em>β</em>/<em>M)</em> and denoted as Ni₁₀_%@<em>β</em>/<em>M</em>. CTR was sequentially extracted with acetone/carbon disulfide, petroleum ether, and petroleum ether/methanol (5 vol% H₂O) to obtain the soluble portion in methanol phase (PEEP_M). PEEP_M mainly consists of phenols (64.8 %) and arenes (18.9 %). It was conducted to CHC over Ni₁₀_%@<em>β</em>/<em>M</em> at 160 °C for 16 h under 5 MPa of an initial hydrogen pressure (IHP) to obtain CHPEEP_M. The results indicate that the relative content of cyclanes in CHPEEP_M reaches as high as 93.4 %. In Ni₁₀_%@<em>β</em>/<em>M</em>, abundant defects, hierarchical porous composite zeolite with strong Lewis acid sites and uniformly dispersed NNPs play crucial roles in removing heteroatoms and hydrogenating aromatic rings (ARs), respectively. Benzyloxybenzene (BOB) is a model compound with a &gt;C-O- bridge bond and ARs, used to study the catalytic activity of Ni₁₀_%@<em>β</em>/<em>M</em>. BOB was completely converted into cyclanes at 160 °C for 2 h under 5 MPa IHP. The high yield of polycyclic alkanes is related to the coupling between the active fragments formed after &gt;C-O- cleavage and the main structure. The synergistic transfer of H···H, ^δ+H···H^δ-, and H⁺ generated by Ni₁₀_%@<em>β</em>/<em>M</em> activation of H₂ is key to the hydrogenation of ARs via induced &gt;C-O- bond cleavage, leading to the formation of saturated cyclanes.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107069"},"PeriodicalIF":5.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549744","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":"Multi-objective optimization framework for nitrogen-containing compounds generation in nitrogen-enriched pyrolysis: Integrating transfer learning and experimental validation","authors":"Hui Wang ,&nbsp;Dongmei Bi ,&nbsp;Qingqing Qian ,&nbsp;Lei Pan ,&nbsp;Shanjian Liu ,&nbsp;Weiming Yi","doi":"10.1016/j.jaap.2025.107070","DOIUrl":"10.1016/j.jaap.2025.107070","url":null,"abstract":"<div><div>A multi-objective optimization approach, integrating machine learning and transfer learning, was proposed to optimize the generation of nitrogen-containing compounds in nitrogen-enriched pyrolysis of biomass. A high-accuracy Gradient Boosting Regression Tree (GBRT) model was developed using 827 experimental data sets, with transfer learning employed to accelerate training on specific target variables. This approach significantly enhanced both learning efficiency and predictive performance. The model achieved a Coefficient of Determination (R²) of 0.968 and a Mean Absolute Error (MAE) of 1.047 on the test set, demonstrating exceptional predictive capability. Through Principal Component Analysis (PCA) and model interpretability methods such as SHapley Additive exPlanations (SHAP) and Local Interpretable Model-agnostic Explanations (LIME), key influencing factors were identified. The critical factors include nitrogen source ratio, pyrolysis temperature, and protective gas. The study identified a synergistic effect when the nitrogen source ratio was 50.00 % and the pyrolysis temperature was 550°C. This condition led to the maximum generation of nitrogen-containing compounds. Additionally, increasing the nitrogen source ratio reduced the formation of volatile compounds, while higher lignin content promoted the formation of aldehydes and ketones. Experimental validation via nitrogen-enriched pyrolysis of corn stover confirmed the practical applicability of the model. The model accurately predicted nitrogen-containing compounds generation, with the maximum prediction error constrained to within 6.20 %. This study combines data-driven methods with experimental validation. The approach provides a novel technological framework for optimizing complex chemical reactions and supporting the sustainable production of high-value nitrogen-based chemicals.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"189 ","pages":"Article 107070"},"PeriodicalIF":5.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534431","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}