Journal of Analytical and Applied Pyrolysis最新文献

{"title":"Thermochemical recycling of waste glass fiber-reinforced polymers: A research based on experiments and quantum chemical calculations","authors":"Ran Tao ,&nbsp;Yufeng Wu ,&nbsp;Junnan Geng ,&nbsp;Yidi Zhan ,&nbsp;Lijuan Zhao ,&nbsp;Bin Li ,&nbsp;Haoran Yuan ,&nbsp;Jing Gu ,&nbsp;Yong Chen","doi":"10.1016/j.jaap.2025.107277","DOIUrl":"10.1016/j.jaap.2025.107277","url":null,"abstract":"<div><div>The large-scale recycling and resource utilization of waste glass fiber-reinforced polymers (GFRPs) represents a critical challenge constraining the sustainable development of the composite materials industry. In this study, common waste GFRPs, specifically retired wind turbine blades (WTBs), were systematically investigated to elucidate their thermochemical conversion mechanisms and glass fiber regeneration technologies. This approach effectively resolves the existing bottlenecks of low pyrolysis efficiency and unclear reaction mechanisms in current thermal decomposition approaches. Through experimental analysis and density functional theory (DFT) calculations, this study reveals the degradation characteristics of retired WTBs: weight loss occurs between 290 and 500°C with an average apparent activation energy of approximately 170 kJ·mol⁻¹ . A synergistic pyrolysis-oxidation process was developed, achieving 89.5 % pyrolysis efficiency under optimal parameters (pyrolysis temperature: 500°C, pyrolysis time: 80 min, carrier gas flow rate: 50 mL·min⁻¹). Surface-clean glass fibers were successfully obtained via subsequent oxidative treatment (500°C for 80 min), achieving an organic component removal efficiency exceeding 98 %. Mechanistic studies demonstrate that epoxy resin pyrolysis follows a free radical-dominated degradation pathway: initial homolytic cleavage of C-O bonds generates various radical intermediates, which subsequently recombine to form characteristic products including bisphenol A, ethylene oxide, propylene oxide, and propylene. Notably, the presence of glass fibers (SiO₂) significantly reduces C-O bond orders, thereby accelerating resin matrix dissociation. This research provides both theoretical foundations and technical pathways for GFRPs valorization, demonstrating substantial industrial application potential.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107277"},"PeriodicalIF":5.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634340","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":"High-temperature pyrolysis of low-density polyethylene for hydrogen production and carbon capture","authors":"Cedric Karel Fonzeu Monguen ,&nbsp;Ahmet Çelik ,&nbsp;Felix Straub,&nbsp;Vanessa Maria Pohl,&nbsp;Jannis Kühn,&nbsp;Patrick Lott,&nbsp;Olaf Deutschmann","doi":"10.1016/j.jaap.2025.107289","DOIUrl":"10.1016/j.jaap.2025.107289","url":null,"abstract":"<div><div>Utilizing low-density polyethylene (LDPE) as a feedstock, non-catalytic thermal pyrolysis represents a promising technology for large-scale hydrogen generation and carbon capture. Furthermore, the use of the solid carbon byproduct generated during the process, enhances the operation’s economic feasibility. This work uses the model compound to reveal the potential of LDPE pyrolysis for producing hydrogen and capturing carbon. A laboratory-scale high-temperature fixed bed reactor is operated in the temperature ranging from 700 °C to 1600 °C, with LDPE pellets of 5 mm in diameter. Despite a decrease in gas yield to 13.7 wt% as the temperature increases, the hydrogen yield significantly increased up to 11.0 wt% from 900 °C to 1600 °C. Approximately two-thirds of the hydrogen present in the polymer was identified as molecular hydrogen in the product gas. At 1600 °C, a purity of 98.5 mol% was achieved for the hydrogen produced, while the product gas at temperatures ranging from 700 °C to 900 °C predominantly contained methane and ethylene. The analysis of the influence of temperature on the condensable product phase demonstrated an increase in the yields of aliphatic and polycyclic aromatic hydrocarbons (PAHs) species up to a temperature of 1000 °C. The decrease in yield of Aliphatic and PAHs from 1000 °C onwards could be attributed to the gradual decarbonization of the gas phase through the formation of solid carbon. Additionally, the produced solid carbon was analyzed using various techniques, including TEM, SEM, DLS, TGA, XRD, and Raman spectroscopy. The results demonstrated its potential as a sustainable industrial carbon material.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107289"},"PeriodicalIF":5.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704014","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":"Exploring the effects of calcium bicarbonate on endogenous phosphorus conversion and pyrolysis product distributions of oil crop residues","authors":"Wei Yang ,&nbsp;Wenbo Hu ,&nbsp;Huihui Liu ,&nbsp;Pengxiao Wang ,&nbsp;Pan Li ,&nbsp;Hui Li ,&nbsp;Zhiwei Wang ,&nbsp;Shuhua Yang ,&nbsp;Zaifeng Li ,&nbsp;Youjian Zhu","doi":"10.1016/j.jaap.2025.107287","DOIUrl":"10.1016/j.jaap.2025.107287","url":null,"abstract":"<div><div>Phosphorus-rich oil crop residues hold significant potential for use as phosphate fertilizers. Pyrolysis can enhance the enrichment of phosphorus in bio-char, although the transformation process remains unclear. To improve the availability of phosphorus and optimize its forms in bio-char, calcium bicarbonate (Ca(HCO₃)₂) was introduced in this study to analyze its effects on the transformation of phosphorus forms and the distribution of pyrolysis products. The addition of Ca(HCO₃)₂ increased the carbon monoxide (CO) content in the pyrolysis gas. Meanwhile, Ca(HCO₃)₂ reduced the acidity of bio-oil while increasing the aliphatic hydrocarbons content. The introduction of Ca(HCO₃)₂ promoted the formation of calcium-phosphorus (Ca-P) compounds. When the addition of Ca(HCO₃)₂ was at 10 %, the content of hydrochloric acid-soluble phosphorus (HCl-P) reached its maximum at 74.3 %, which was advantageous for phosphorus utilization. However, excessive amounts of Ca(HCO₃)₂ can lead to the conversion of HCl-P into residual phosphorus (RP), making it essential to maintain an appropriate proportion. Increasing the pyrolysis temperatures enhanced the lower heating value (LHV) of the gas due to the increased concentration of combustible gases, such as hydrogen (H₂), methane (CH₄), and carbon monoxide (CO). Additionally, the levels of aromatic and aliphatic hydrocarbons in bio-oil increased with rising temperatures, which is significant for subsequent high-value applications. Furthermore, elevated temperatures promoted an increase in the total phosphorus content in bio-char. However, lower temperatures (≤500 ℃) facilitated the reaction between Ca(HCO₃)₂ and organic phosphates, leading to the formation of HCl-P. In contrast, higher temperatures (≥600 ℃) resulted in the conversion of HCl-P to RP.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107287"},"PeriodicalIF":5.8,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632083","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":"Regulation of pre-pyrolysis on the release of alkali metals during the co-gasification of coal and biomass in visualized fixed-bed coupled with laser-induced breakdown spectrometer system","authors":"Chang Wang ,&nbsp;Chaoyue Zhao ,&nbsp;Jiaofei Wang ,&nbsp;Guozhen Chi ,&nbsp;Yonghui Bai ,&nbsp;Xudong Song ,&nbsp;Weiguang Su ,&nbsp;Peng Lv ,&nbsp;Guangsuo Yu","doi":"10.1016/j.jaap.2025.107286","DOIUrl":"10.1016/j.jaap.2025.107286","url":null,"abstract":"<div><div>The release of alkali metals during the co-gasification of coal and biomass can cause the deposition, slagging, and corrosion of equipment. In this work, the pretreatment of Yangchangwan coal and rice straw via low-temperature pyrolysis was performed to regulate both the release behavior and the release amount of volatiles. The correlation mechanism between the release of volatile matter, the evolution of char physicochemical properties, and the real-time release characteristics of alkali metals during gasification was further investigated using a self-designed visualized fixed-bed coupled with a laser-induced breakdown spectrometer. The results showed that pre-pyrolysis treatment at 300 °C and 450 °C changed the content of volatiles and properties of chars and thus affected the release time and concentration of alkali metals during gasification. The release of volatiles via the short-term (below 15 min) pre-pyrolysis treatment declined the content of C–O–C and C<img>O bonds, thereby promoting the release of alkali metals. When the pre-pyrolysis time exceeded 15 min, the more oxygen-containing groups and the higher structure disorder degree of pre-pyrolysis chars inhibited the release of alkali metals during gasification, reducing the release rate by 8 %. The release of the volatile and the break of oxygen-containing functional groups (C–O–C and C<img>O) were key factors increasing the maximum release concentration of alkali metals during gasification.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107286"},"PeriodicalIF":5.8,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614007","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":"Effect of reservoir moisture on underground in-situ pyrolysis of tar-rich coal: Experimental investigation and ReaxFF MD simulation","authors":"Zunyi Yu ,&nbsp;Panxi Yang ,&nbsp;Keming Fu ,&nbsp;Wei Guo ,&nbsp;Hongqiang Li ,&nbsp;Xuanzhi Hao ,&nbsp;Jing Wang ,&nbsp;Bolun Yang ,&nbsp;Bin Zhang ,&nbsp;Tao Xie ,&nbsp;Zhiqiang Wu","doi":"10.1016/j.jaap.2025.107285","DOIUrl":"10.1016/j.jaap.2025.107285","url":null,"abstract":"<div><div>Different moisture content is an important aspect of underground coal seam heterogeneity, which would affect the underground in-situ pyrolysis of tar-rich coal. The pyrolysis characteristics and product distribution of water-bearing tar-rich coal were investigated by the fixed bed pyrolysis experiments. Based on the ReaxFF MD simulation, the pyrolysis characteristics and reaction mechanism were explored from a microscopic perspective. The results showed that the pyrolysis characteristic index (<em>D</em>_<em>i</em>) continued to decrease with increasing moisture content, indicating that H₂O could increase the release difficulty of pyrolysis volatiles. As the moisture content increased from 1 wt% to 15 wt%, the tar yield and lighter tar proportion increased from 4.39 wt% and 49.75 % to 11.95 wt% and 61.25 %. Therefore, the two obtained with higher moisture content would be also higher. The above results showed that H₂O could promote the pyrolysis of coal. The tar yield and lighter tar proportion obtained under the CO₂ atmosphere were further improved. The results of the ReaxFF MD simulation showed that the changing trends of pyrolysis product distribution were consistent with experimental results. The statistical results of chemical bonds showed that H₂O could promote the cracking of C-C and C-O bonds within the pyrolysis system. By analyzing the typical pyrolysis reaction mechanism, the results of pyrolysis experiment and ReaxFF MD simulation were further confirmed. Based on the comprehensive analysis of the above results, it could be concluded that the most suitable reaction conditions for water-bearing tar-rich coal pyrolysis were moisture content: 5 wt%∼10 wt%, N₂ atmosphere.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107285"},"PeriodicalIF":5.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632176","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":"Enhanced tar upgrading and anti-coking performance of Co-Ce bimetallic-loaded EDTA-modified ZSM-5@activated carbon catalyst","authors":"Shijie Ma ,&nbsp;Zhiji Zhang ,&nbsp;Hongyu Zhao ,&nbsp;Yang Hu ,&nbsp;Budeebazar Avid ,&nbsp;Sheng Xue","doi":"10.1016/j.jaap.2025.107282","DOIUrl":"10.1016/j.jaap.2025.107282","url":null,"abstract":"<div><div>The heavy tar components produced during lignite pyrolysis significantly hinder the practical application of coal pyrolysis products due to their high viscosity, low calorific value, and corrosive properties. To improve tar upgrading efficiency and enhance catalyst resistance to carbon deposition, this study developed composite support by combining an EDTA-chelated ZSM-5 molecular sieve with activated carbon. A comprehensive investigation was performed on catalyst systems containing 5 wt% single metals (Co or Ce) and Co/Ce bimetals (total metal loading 5 wt%, Co/Ce mass ratio 1:1). Analyses of catalytic pyrolysis tar and gas products using TG-FTIR and Py-GC/MS demonstrated that the CoCe/C@EZ5 catalyst substantially increased light aromatic selectivity, specifically enhancing the production of high-value BTEXN aromatics (benzene, toluene, ethylbenzene, xylene, and naphthalene) by 47.17 %. Kinetic studies revealed that CoCe/C@EZ5 lowered the activation energy for tar cracking while improving the conversion efficiency of heavy tar components into light aromatics. Characterization through SEM, TEM, XPS, NH₃-TPD, TPO, and Raman spectroscopy confirmed that metal doping achieved simultaneous modulation of surface acid properties, improved redox tolerance, and reduced carbon deposition during reactions, collectively contributing to enhanced catalyst stability. The activated carbon component exhibited two synergistic roles: its hierarchical pore structure effectively adsorbed and dispersed carbon precursors, while oxygen-containing surface groups (e.g., carboxyl and phenolic hydroxyl groups) formed coordination bonds with Co/Ce metal species, thereby improving metal dispersion stability and coking resistance. TPO and Raman spectroscopy analyses demonstrated that incorporating activated carbon alleviated catalyst deactivation caused by carbon deposition, thereby facilitating oxidative removal of the deposited carbon.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107282"},"PeriodicalIF":5.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632175","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 hydrocarbon-rich bio-oil by microwave catalytic co-pyrolysis of sugarcane bagasse and digestate from anaerobic digestion of poultry litter","authors":"Ahmed Elsayed Mahmoud Fodah ,&nbsp;Taha Abdelfattah Mohammed Abdelwahab ,&nbsp;Xianhua Wang ,&nbsp;Ziyue Tang ,&nbsp;Xiayu Liu ,&nbsp;Haiping Yang","doi":"10.1016/j.jaap.2025.107284","DOIUrl":"10.1016/j.jaap.2025.107284","url":null,"abstract":"<div><div>This study investigates the production of hydrocarbon-rich bio-oil through microwave co-pyrolysis of sugarcane bagasse (SB) and digestate derived from the anaerobic digestion of poultry litter (PD). The synergistic effects of co-feeding these two untreated feedstocks for a waste-by-waste treatment approach were evaluated under microwave pyrolysis conditions, with a focus on enhancing the yield and quality of the resulting bio-oil. A range of catalysts, including biochar, Fe-supported biochar, HZSM-5, acid-treated HZSM-5, and CaO, were employed to assess their influence on hydrocarbon content and product distribution. The results revealed that co-feeding of 50:50 for SB and PD (S50P50) produced the highest bio-oil yield, which was higher by 10–22 % than single feeding. Also, the highest hydrocarbon content in the bio-oil (32.5 %) was found under the S50P50 condition with fewer oxygen-containing components. Under acid-treated HZSM-5 catalyst, the highest hydrocarbon was detected in the bio-oil (41 %) overall catalysts and non-catalytic conditions. Overall, the findings demonstrate that microwave co-pyrolysis of optimal feeding ratio (S50P50), especially in the presence of an effective acid-treated HZSM-5 catalyst, is a promising route for converting these untreated residues into high-quality bio-oil suitable for fuel applications.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107284"},"PeriodicalIF":5.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605302","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 co-pyrolysis of lignocellulosic biomass with plastic waste as a sustainable waste-to-energy solution toward a low-carbon economy: A bibliometric review of the last 5 years of research","authors":"Edyjancleide Rodrigues da Silva ,&nbsp;José Luiz Francisco Alves ,&nbsp;Francisca Iara Araujo Franco ,&nbsp;Dulce Maria de Araújo Melo ,&nbsp;Renata Martins Braga","doi":"10.1016/j.jaap.2025.107279","DOIUrl":"10.1016/j.jaap.2025.107279","url":null,"abstract":"<div><div>With the climate crisis, the demand for new sustainable fuels to diversify the global energy matrix has intensified. In this context, the co-pyrolysis of biomass/plastic mixtures has emerged as a promising alternative. Therefore, this article proposes a bibliometric analysis, whose novelty lies in identifying thematic patterns, major advances, and challenges faced in the field during the period from 2020 to 2025. Data were extracted from the Scopus and Web of Science platforms, classified according to the PRISMA 2020 methodology as strongly related, weakly related, and unrelated, and analyzed using the VOSviewer and Bibliometrix software tools. From the initial 889 documents (Scopus: 281; WoS: 608), 337 were selected, indicating the scientific leadership of China and India, with a predominance of laboratory-scale studies (TRL 2–3). The recurring use of thermogravimetric analyzers and analytical systems, along with a growing interest in microwave-assisted pyrolysis, was identified. In the catalytic field, HZSM-5 zeolite stands out. Regarding feedstocks, biomass, such as wood and sawdust, prevails, typically combined with widely available polymers, including polyethylene, polystyrene, and polypropylene. The analysis revealed five priority research fronts: (i) scaling up to pilot plants; (ii) low-cost catalysts; (iii) microwave-specific reactors; (iv) diversification of feedstocks, including hard-to-recycle plastics; and (v) strengthening international collaboration networks. These advancements are crucial to establishing co-pyrolysis as a strategic technology within the circular economy and energy transition, directly contributing to the achievement of the Sustainable Development Goals (SDGs 7, 11, 12, and 13).</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107279"},"PeriodicalIF":5.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632084","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 hydrothermal carbonization parameters on the textural and physicochemical properties of highly porous activated carbons derived from garlic peel biowaste","authors":"A. Martín–Lorenzo ,&nbsp;M. Hoyos ,&nbsp;A. Álvarez–Gómez","doi":"10.1016/j.jaap.2025.107280","DOIUrl":"10.1016/j.jaap.2025.107280","url":null,"abstract":"<div><div>The parameters associated with the pyrolysis and chemical activation processes of a hydrochar prepared by hydrothermal carbonization (HTC) have been thoroughly studied to produce porous carbon materials. To date, there are very few references on how to modulate the textural and physicochemical properties of the final material by tunning the HTC parameters. This research work succeeds in studying the effect of particle size, carbonization temperature, on different properties of the resulting activated carbon, as for instance, the surface area values, micro– and mesopore ratio, and nitrogen content. This allows the production of porous carbon materials with controlled and tunable characteristics to be obtained through a sustainable HTC and pyrolysis processes using K₂CO₃ and urea as green activation agents, allowing the valorization of agri-food derived biowaste. It is demonstrated how the use of a dry biomass such as garlic peel is suitable for obtaining a high carbon yield hydrochar that, after its chemical activation aided by pyrolysis, allows obtaining a series of carbon materials with a well-developed and adjusted porosity (2000–2700 m²/g), high CO₂ adsorption (4.9–5.9 mmol/g at 293 K) and a variable nitrogen (1–3.5 wt%) and oxygen (5.4–10.8 wt%) content.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107280"},"PeriodicalIF":5.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587613","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":"Catalytic conversion of lignin to aromatic monomers via heterostructured N-doped carbon encapsulated highly dispersed and ultrasmall MoC nanoparticles","authors":"Lei Chen,&nbsp;Chuanxin Cao,&nbsp;Kai Chang,&nbsp;Yuying Zhao,&nbsp;Dongliang Hua,&nbsp;Laizhi Sun,&nbsp;Shuangxia Yang,&nbsp;Zhiguo Dong,&nbsp;Tianjin Li","doi":"10.1016/j.jaap.2025.107278","DOIUrl":"10.1016/j.jaap.2025.107278","url":null,"abstract":"<div><div>The selective cleavage of C-O is facing a challenge in lignin depolymerization for producing aromatic monomers. Hence, N-doped carbon supported highly dispersed and ultrasmall MoC nanoparticles were prepared via a two-stage pyrolysis process using a mixture of glucose, ammonium molybdate and melamine for the conversion of lignin into aromatic monomers. A series of MoC/NC-x catalysts were prepared by varying the Mo:C weight ration among which the optimal MoC/NC catalyst showed the best hydrogenolysis performance. The real birch lignin could be completely converted at 280 ℃ after 4 h with 26.1 wt% aromatic monomers. The N-doped carbon was not only used as support to immobilized MoC nanoparticles, but also affecting the pore properties and metal-support interaction. Experimental and theoretical results reveal N can modulate the orbital structure of Mo to promote H₂ activation. Moreover, the pyridinic N contributes to the highest adsorption energy for 2-phenoxy-1-phenethanol and the disassociation of C_alkyl-O bond is significantly reduced on MoC/NC. This work provides a promising approach for the conversion of lignin to produce aromatic monomers with general applicability.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"192 ","pages":"Article 107278"},"PeriodicalIF":5.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587614","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}