Chemical Engineering Journal最新文献_第3页

The dissolution behavior of anorthite in partly crystallized slag of solid fuel at increasing temperature 钙长石在固体燃料部分结晶渣中的升温溶解行为

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-23 DOI: 10.1016/j.cej.2025.159668

Hao Lu, Jin Bai, Guixuan Wu, Lingxue Kong, Huaizhu Li, Yu Wang, Zhenxing Guo, Zongqing Bai, Wen Li

{"title":"The dissolution behavior of anorthite in partly crystallized slag of solid fuel at increasing temperature","authors":"Hao Lu, Jin Bai, Guixuan Wu, Lingxue Kong, Huaizhu Li, Yu Wang, Zhenxing Guo, Zongqing Bai, Wen Li","doi":"10.1016/j.cej.2025.159668","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159668","url":null,"abstract":"The Stokes flow of crystals in slag increases the viscosity of the slag, which leads to slag blockage in entrained-flow gasifiers. Increasing the operating temperature is a common in-situ method to promote crystal dissolution and decrease slag viscosity. Developing a cost-effective heating procedure requires a clear understanding of the dissolution behavior of crystals in the slag. This study focuses on anorthite, the most common mineral in gasification slag, investigating its dissolution behavior in slags with varied chemical compositions and analyzing element diffusion between the crystal and slag. Results revealed that anorthite dissolves at lower temperatures in slags with a higher SiO<ce:inf loc=\"post\">2</ce:inf> to Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> ratio (Si/Al) and higher Fe<ce:inf loc=\"post\">x</ce:inf>O content. Higher Si/Al amplifies the Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> concentration difference between anorthite and slag, facilitating dissolution. Additionally, the study confirms that anorthite dissolution is controlled by surface reactions, with Fe<ce:sup loc=\"post\">2+</ce:sup> playing a key role in enhancing the surface reaction, further accelerating dissolution. Consequently, increasing the operating temperature in gasifiers with crystallized slags containing high Si/Al and high Fe<ce:inf loc=\"post\">x</ce:inf>O improves slag flowability, reducing viscosity to meet slag tapping requirements at lower reheat temperatures. This preliminary study provides valuable insights into the dissolution mechanisms of anorthite and offers practical strategies to enhance slag flowability in entrained-flow gasifiers.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"28 4 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143021239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “High-performance gelatin-based hydrogel flexible sensor for respiratory monitoring and human–machine interaction” [Chem. Eng. J. 502 (2024) 157975] “用于呼吸监测和人机交互的高性能明胶基水凝胶柔性传感器”的勘误表[化学]。Eng。J. 502 (2024) 157975]

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Chemical Engineering Journal Pub Date : 2025-01-23 DOI: 10.1016/j.cej.2025.159772

Ruonan Liu, Yanpeng Wang, Haoxiang Chu, Yiqi Li, Yehan Li, Yunjun Zhao, Ye Tian, Zhixiu Xia

引用次数: 0

Self-healing, highly stretchable, and 3D printable thiol-functionalized cellulose nanofibers/waterborne polyurethane composites for flexible electronic monitoring 自修复，高度可拉伸，3D打印硫醇功能化纤维素纳米纤维/水性聚氨酯复合材料，用于柔性电子监测

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-23 DOI: 10.1016/j.cej.2025.159835

Zuochao Zhu, Yadan Zhao, Yongjian Zhang, Sangzi Zhang, Wenhao Li, Gaoyuan Ye, Xiaofan Ma, Xiaochun Zhang, Hongjie Bi

{"title":"Self-healing, highly stretchable, and 3D printable thiol-functionalized cellulose nanofibers/waterborne polyurethane composites for flexible electronic monitoring","authors":"Zuochao Zhu, Yadan Zhao, Yongjian Zhang, Sangzi Zhang, Wenhao Li, Gaoyuan Ye, Xiaofan Ma, Xiaochun Zhang, Hongjie Bi","doi":"10.1016/j.cej.2025.159835","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159835","url":null,"abstract":"The development of conductive materials with high mechanical resilience and effective self-healing capabilities is essential for flexible electronic monitoring. However, simultaneously achieving superior mechanical properties and self-healing ability in materials remains a significant challenge. In this study, a novel eco-friendly, 3D printable waterborne polyurethane composite (CSPU) was synthesized by incorporating waterborne polyurethane with thiol-functionalized cellulose nanofiber. The resulting CSPU composites exhibit excellent mechanical strength and ductility, showing an elongation at break of up to 1300 % and a stress of 5.5 MPa. Moreover, the composite achieves efficient self-healing after UV irradiation, with both strain and stress recovery reaching nearly 100 % within 1.5 h. With the CSPU composite’s excellent printability, a flexible conductive composite sensor with specific shape is prepared by spraying an ultrasonic dispersion of cellulose nanofiber and carbon nanotubes onto the 3D printed CSPU composites, followed by drying process. The flexible sensor demonstrates excellent self-healing capabilities, flexible, reliability, and good electrical signal detection capabilities, enabling accurate monitoring various human motions, such as the bending of human fingers. These exceptional properties position it as a highly promising candidate for applications in flexible electronic monitoring, medical health, human–machine interfaces, and beyond.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"407 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Amino oxidized sodium alginate-based humidity-resistant triboelectric nanogenerator for human motion and respiration monitoring 用于人体运动和呼吸监测的氨基氧化海藻酸钠耐湿摩擦电纳米发电机

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159842

Xixi Wang, Na Li, Ailing Yang, Nianfeng Zhang, Wu Qiu, Dapeng Yang

{"title":"Amino oxidized sodium alginate-based humidity-resistant triboelectric nanogenerator for human motion and respiration monitoring","authors":"Xixi Wang, Na Li, Ailing Yang, Nianfeng Zhang, Wu Qiu, Dapeng Yang","doi":"10.1016/j.cej.2025.159842","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159842","url":null,"abstract":"The charge dissipation effect induced by the surrounding water not only severely reduces the output of the triboelectric nanogenerators (TENGs), but also impacts their stability and durability, significantly limiting their application. Therefore, developing humidity-resistant triboelectric nanogenerators (HRTENGs) is an urgent issue to improve the environmental adaptability of TENGs. Herein, a novel HRTENG was designed with amino-oxidized sodium alginate (OSAN) that achieves enhanced electrical output properties from 15 % RH to 85 % RH, accompanying excellent reversible property and outstanding water resistance ability. The enhancing dielectric property by introducing of aldehyde groups direct improves the output of the TENG, and the hydrophilicity improvement by modified with the amino side chains induces the formation of bound water, resulting in charge dissipation effect weakening and contact charging strengthening, further increasing the output of the HRTENG. At 50 % RH, the electrical output of the HRTENG fabricated with OSAN3G0.5 is nine times higher compared to the TENG made with SAG0.5. The HRTENGs were used to monitor motion and respiratory status and could also clearly identify sleep issues for patients suffering from obstructive sleep apnea-hypopnea syndrome. The HRTENG we constructed provides a reference for future wearable self-powered devices for motion management, respiratory monitoring, disease diagnosis, and rehabilitation treatment.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"32 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Significant increase in reactive oxygen species induced by metal deposition on microplastic surfaces: A case study involving lead and enrofloxacin 微塑料表面金属沉积诱导活性氧显著增加：涉及铅和恩诺沙星的案例研究

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159783

Qiyi Chen, Jianzheng Li, Zhen Pan, Jia Meng, Jiuling Li

{"title":"Significant increase in reactive oxygen species induced by metal deposition on microplastic surfaces: A case study involving lead and enrofloxacin","authors":"Qiyi Chen, Jianzheng Li, Zhen Pan, Jia Meng, Jiuling Li","doi":"10.1016/j.cej.2025.159783","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159783","url":null,"abstract":"Microplastics, ubiquitous in aquatic ecosystems, pose a significant threat to the ecological safety of rivers and lakes and to human health, particularly due to their impact on the environmental behavior of antibiotics and heavy metals. This study investigated the impact of lead (Pb) deposition on the characteristics of microplastic (including polypropylene, polystyrene, and polyvinyl chloride) and the photoconversion of antibiotics enrofloxacin (ENR). The ENR photoconversion increased by 1.65%–15.67% following Pb deposition on microplastic at various light conditions, with higher Pb levels intensifying this photoconversion. The excitation of reactive oxygen species (ROS), particularly hydroxyl radicals and singlet oxygen, by Pb-deposited microplastic, was identified as the primary mechanism driving ENR photoconversion. Pb deposition enhanced hydroxyl radicals and singlet oxygen generation by 28.61% and 61.87%, respectively. Moreover, Pb deposition induced changes in the functional groups of microplastic, and the PbO formation on the microplastic surface can reduce the global reactivity of microplastic confirmed by density functional theory calculations. These findings provide novel insights into the environmental behavior of microplastic and their interactions with pollutants, highlighting their role in facilitating complex chemical transformations.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"32 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Breathable, hydrophobic and antibacterial bioinspired fabric pressure sensors for comfortable skin-mountable health monitoring 透气，疏水和抗菌的仿生织物压力传感器，舒适的皮肤贴装健康监测

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159808

Guifen Sun, Zhendong Sun, Peng Wang, Zhengyan Zhang, Chuizhou Meng, Shijie Guo, Yang Li

{"title":"Breathable, hydrophobic and antibacterial bioinspired fabric pressure sensors for comfortable skin-mountable health monitoring","authors":"Guifen Sun, Zhendong Sun, Peng Wang, Zhengyan Zhang, Chuizhou Meng, Shijie Guo, Yang Li","doi":"10.1016/j.cej.2025.159808","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159808","url":null,"abstract":"The development of flexible pressure sensors has attracted significant attention because of their critical role in wearable human health monitoring. However, most flexible sensors are constructed on impermeable polymer substrates, which cause an uncomfortable wearing experience owing to poor biocompatibility and breathability. Inspired by the advantages of natural Agropyron cristatum and octopuses, a flexible, breathable, hydrophobic, and antibacterial pressure sensor based on a permeable fabric platform is developed. The device is designed by sandwiching a microstructured gel ionic electrolyte between two zeolitic imidazolate frameworks-67 (ZIF-67)/silver nanowires (Ag NWs)/stearic acid (STA) fabric electrodes. Owing to the enhanced double-layer capacitive effect between the microstructured electrode–electrolyte interfaces, the sensor achieves outstanding sensitivity (∼751.57 kPa−1) and a wide detection range (∼84 kPa) with excellent durability. The micropores in the interior of the sensor provide good air permeability (∼350 mm s−1), and the STA nanosheets on the outside of the sensor exhibit hydrophobicity (contact angle ∼ 164.2°). Additionally, unique antibacterial ability is obtained by incorporating Ag NWs into ZIF-67. Consequently, a breathable and biocompatible wearing experience for the skin is achieved with sweatproof protection. The proposed strategy will render e-skins more comfortable, offering a favorable pathway for health monitoring.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"3 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Protein-based supramolecular adhesive capable of on-demand adhesion and anti-adhesion for preventing undesired epidural tissue adhesion 基于蛋白质的超分子粘接剂能够按需粘连和抗粘连，以防止不希望的硬膜外组织粘连

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159778

Tong Li, Guang Wen, He Zhao, Yang Qu, Han Wu, Yingchuan Sun, Jianwu Zhao, Wen Li

{"title":"Protein-based supramolecular adhesive capable of on-demand adhesion and anti-adhesion for preventing undesired epidural tissue adhesion","authors":"Tong Li, Guang Wen, He Zhao, Yang Qu, Han Wu, Yingchuan Sun, Jianwu Zhao, Wen Li","doi":"10.1016/j.cej.2025.159778","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159778","url":null,"abstract":"The undesired adhesion between the dura mater and surrounding tissues is a great challenge in the clinical treatment of spinal stenosis and disc herniation, and this condition can typically lead to failed back surgery syndrome (FBSS) and persistent or recurrent lumbosacral pain or sciatica. Here, a protein-based supramolecular adhesive featured with wet adhesion and on-demand anti-adhesion via non-covalent interactions between anionic glycyrrhizic acid (GA) nanofibers and N-α-lauroyl-arginine ethyl ester hydrochloride (LAE) dispersed zein colloid (zein-LAE). By controlling the crosslinking density of the zein-LAE/GA supramolecular polymers, the adhesion and anti-adhesion could be conveniently regulated. In detail, suitable amount of GA improved the adhesion strength of the zein-LAE/GA supramolecular adhesives, whereas excessive GA caused the surface curing and anti-adhesion. It was proposed that the anti-adhesion outcome was attributed to the enhanced cross-linking density and Young’s modulus of the supramolecular polymers, and the declined freedom of the binding groups. The excellent biocompatibility and biodegradation enabled the zein-LAE/GA supramolecular polymers to function as easy-to-implement Janus implants for the in vivo prevention of postoperative epidural adhesion in a rat model. In conclusion, the physical barrier of the Janus implant together with the anti-oxidation and anti-inflammatory effects of the GA component played a synergistic role in achieving epidural anti-adhesion.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"105 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomass upgrading of furfural to cyclopentanone via selective aqueous-phase hydrogenative rearrangement over Pd/g-C3N4 catalysts Pd/g-C3N4催化剂选择性水相加氢重排生物质糠醛升级为环戊酮

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159752

Shihao Zhang, Ruilin Xu, Chen Meng, Yiwen Zhang, Weiran Hu, Xing Gao, Dan Yang, Xiaoyue Wan, Chunmei Zhou, Leonid M. Kustov, Yanhui Yang, Yihu Dai

{"title":"Biomass upgrading of furfural to cyclopentanone via selective aqueous-phase hydrogenative rearrangement over Pd/g-C3N4 catalysts","authors":"Shihao Zhang, Ruilin Xu, Chen Meng, Yiwen Zhang, Weiran Hu, Xing Gao, Dan Yang, Xiaoyue Wan, Chunmei Zhou, Leonid M. Kustov, Yanhui Yang, Yihu Dai","doi":"10.1016/j.cej.2025.159752","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159752","url":null,"abstract":"The monometallic Pd/g-C3N4 catalysts were synthesized and applied in aqueous-phase hydrogenative rearrangement of furfural (FFR) to cyclopentanone (CPO) for biomass upgrading. Their structure-performance relationship has been investigated by combining structural characterizations and kinetic measurements. The Pd-g-C3N4 interfaces prefer single electron transfer property due to the modification of N species, and thus Pd/g-C3N4 catalysts with regulated electronic property of Pd sites can suppress the side-reaction pathway of over-hydrogenation of furfuryl alcohol (FAL) to tetrahydrofurfuryl alcohol (THFAL). Commercial 5 %Pd/C catalyst favors one-electron and two-electron transfer at Pd-C interfaces and possesses lower surface acidity, partially following the THFAL formation pathway. With respect to the size effect, the smaller Pd NPs selects to form furan ring-opening by-products for a low CPO selectivity, whereas the larger leads to a low intrinsic reaction rate for FAL ring-rearrangement. Only the moderate-size Pd catalysts exhibit satisfactory activity, high CPO selectivity and great recycling stability. Furthermore, FFR-to-FAL hydrogenation is identified as the rate-determining step rather than H2 activation and FAL-to-CPO ring-arrangement. The FT-IR spectra elucidate that FFR molecule is activated in a tilted adsorption configuration through bonding with the exocyclic C<img alt=\"double bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/dbnd.gif\" style=\"vertical-align:middle\"/>O group for accelerating the successive reaction steps. This work provides the insights into the effects of electronic property and metal size in the metal–acid synergistic catalysis for hydrogenative rearrangement of FFR.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"49 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complementary P = O…H and π-π interaction network enables synergistic exciton harvesting for high-efficiency white thermally activated delayed fluorescence diodes 互补的P = O…H和π-π相互作用网络实现了高效白热激活延迟荧光二极管的协同激子收获

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159820

Ruiming Du, Peng Ma, Chunbo Duan, Ying Wei, Yi Man, Chunmiao Han, Hui Xu

{"title":"Complementary P = O…H and π-π interaction network enables synergistic exciton harvesting for high-efficiency white thermally activated delayed fluorescence diodes","authors":"Ruiming Du, Peng Ma, Chunbo Duan, Ying Wei, Yi Man, Chunmiao Han, Hui Xu","doi":"10.1016/j.cej.2025.159820","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159820","url":null,"abstract":"Wide-band emissions of conventional thermally activated delayed fluorescence (TADF) emitters with twisted intramolecular charge transfer (TICT) states are superior for realizing high-quality lighting. However, besides suppressing high-polarity TICT states induced exciton quenching, host matrixes are crucial for optimizing interactions in emissive layers for rational exciton allocation and utilization. Herein, we report an asymmetric phosphine oxide host named STSPO, whose 9,9′-spirobi[thioxanthene] (ST) core and diphenylphosphine oxide (DPPO) group are complimentary in balancing weak π-π interactions and intermolecular hydrogen bonds (IHB). As a result, besides favorable electron mobility (µe) of ∼ 10-5 cm2 V−1 s−1 and high-enough excited energy levels, STSPO facilitates uniform dispersions of blue and yellow TADF dopants, optimizes host-dopant and blue-to-yellow energy transfer, and supports direct carrier and exciton capture by yellow TADF emitters. Consequently, STSPO hosted single-emissive-layer complementary-white TADF devices realized the state-of-the-art performances, including external quantum efficiency and power efficiency up to 24.2 % and 82.9 lm/W, respectively.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

O-PTIR reveals the thermal evolution mechanism of ultra-deep light oil: Based on molecular structure and chemical composition analysis O-PTIR基于分子结构和化学成分分析揭示了超深层轻质油热演化机理

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-01-22 DOI: 10.1016/j.cej.2025.159824

Ruilin Wang, Jiakai Hou, Ting Wang, Yang Sun, Ziguang Zhu, Zhigang Wen, Yanqing Zhu, Zhiyao Zhang, Yaling Zhu, Guangyou Zhu

{"title":"O-PTIR reveals the thermal evolution mechanism of ultra-deep light oil: Based on molecular structure and chemical composition analysis","authors":"Ruilin Wang, Jiakai Hou, Ting Wang, Yang Sun, Ziguang Zhu, Zhigang Wen, Yanqing Zhu, Zhiyao Zhang, Yaling Zhu, Guangyou Zhu","doi":"10.1016/j.cej.2025.159824","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159824","url":null,"abstract":"The natural cracking of light oil in deep reservoirs has attracted significant attention in the exploration of ultra-deep unconventional oil and gas. However, the mechanisms of microscopic oil cracking and bitumen conversion remain unclear. This study aims to investigate the molecular composition and chemical functional group distribution of organic matter from gold-tube pyrolysis of light oil, using submicron-resolved Optical Photothermal Infrared Spectroscopy (O-PTIR) for in-situ analysis. The results indicate that in the early stages of thermal evolution, asphaltene clusters in residual oil undergo polymerization reactions, leading to an increase in resin and asphaltene content. Point O-PTIR spectra of light oil and asphaltene exhibit similar features, with minimal aromatic (C=C) absorption and dominant CH2 and CH3 bending vibrations. At an EasyRo of 1.81 %, thermal cracking converts some asphaltenes into solid bitumen, which increases the chemical heterogeneity in O-PTIR maps. As thermal maturity progresses, solid bitumen content rises, molecular composition shifts towards polycyclic aromatic hydrocarbons (PAHs), and the microstructure of solid bitumen changes from powdery to crumbly. At EasyRo = 2.40 %, the chemical heterogeneity of solid bitumen peaks with vein-like distributions of aliphatic compounds. Further maturation leads to molecular homogeneity, characterized by pronounced C=C absorption and broad CH2/CH3 vibrational peaks. Branch ratio and pseudo-van Krevelen analyses further demonstrate that residual organic matter during oil cracking is not homogeneous but varies regionally. Understanding these molecular and chemical heterogeneities at the microscale is crucial for elucidating the migration, fractionation, and conversion processes of ultra-deep light oils.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"57 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0