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Boosting visible-light photocatalytic performance of exfoliated carbon nitride nanosheets via optimizing dopant decoration for efficient pollutant removal 通过优化掺杂装饰提高剥离氮化碳纳米片的可见光催化性能,以有效去除污染物
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-08 DOI: 10.1007/s11705-025-2586-6
Kingsley Igenepo John, Touma B. Issa, Goen Ho, Aleksandar N. Nikoloski, Dan Li
{"title":"Boosting visible-light photocatalytic performance of exfoliated carbon nitride nanosheets via optimizing dopant decoration for efficient pollutant removal","authors":"Kingsley Igenepo John,&nbsp;Touma B. Issa,&nbsp;Goen Ho,&nbsp;Aleksandar N. Nikoloski,&nbsp;Dan Li","doi":"10.1007/s11705-025-2586-6","DOIUrl":"10.1007/s11705-025-2586-6","url":null,"abstract":"<div><p>This study systematically studied the effects of Pr, Fe, and Na as representative rare earth, transition, and alkali metal dopants, respectively, on the photocatalytic activity of exfoliated graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>). The doped exfoliated g-C<sub>3</sub>N<sub>4</sub> samples were prepared by integrating precursor ion intercalation into the pre-formed g-C<sub>3</sub>N<sub>4</sub> with thermal treatment. The as-prepared catalysts were examined for crystal, textural, chemical, optical, and photoelectrochemical properties to explore the correlation between dopants and photocatalytic activity of the resulting composites. The detailed analyses revealed that the Pr-doped g-C<sub>3</sub>N<sub>4</sub> exhibited superior photocatalytic activity in degrading methylene blue under visible light, achieving a ∼96% removal in 40 min. This was not only better than the activity of g-C<sub>3</sub>N<sub>4</sub>, but also much higher than that of Na-doped g-C<sub>3</sub>N<sub>4</sub> or Fe-doped g-C<sub>3</sub>N<sub>4</sub>. The kinetic rate constant using Pr-doped g-C<sub>3</sub>N<sub>4</sub> was 3.2, 5.1, and 2.0 times greater than that of the g-C<sub>3</sub>N<sub>4</sub>, Fe-doped g-C<sub>3</sub>N<sub>4</sub>, and Na-doped g-C<sub>3</sub>N<sub>4</sub>, respectively. The enhanced performance was attributed to its inherent characteristics after optimal tuning, including good surface area, improved porosity, enhanced visible light absorption, suitable electronic band structure, increased charge carrier density, promoted charge separation, and reduced charge transfer resistance. In addition, the optimized Pr(0.4)g-C<sub>3</sub>N<sub>4</sub> was used to study the photocatalytic removal of methylene blue in detail under conditions with different initial methylene blue concentrations, types of dyes, catalyst dosages, initial solution pH, counter ions, and water matrices. Our results demonstrated the high photocatalytic activity of Pr(0.4)g-C<sub>3</sub>N<sub>4</sub> under varying conditions, including in real wastewater media, which were collected from our local municipal wastewater treatment plant. The observed good reusability and stability after five cycles of photocatalytic degradation test further suggested a promising potential of Pr(0.4)g-C<sub>3</sub>N<sub>4</sub> for practical application in wastewater treatment.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11705-025-2586-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Production of biodiesel through the transesterification of Jatropha seed oil catalyzed by S-1 and TS-1 zeolite supported molybdenum catalysts S-1和TS-1分子筛负载钼催化剂催化麻疯树籽油酯交换制备生物柴油
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-06 DOI: 10.1007/s11705-025-2584-8
Yingqi Zhang, Chao Chen, Enxue Xie, Mengping Hu, Guoying Fu, Yan Wang, Liang Li, Xianzai Yan, Zedong Zhang, Guoqiang Wu
{"title":"Production of biodiesel through the transesterification of Jatropha seed oil catalyzed by S-1 and TS-1 zeolite supported molybdenum catalysts","authors":"Yingqi Zhang,&nbsp;Chao Chen,&nbsp;Enxue Xie,&nbsp;Mengping Hu,&nbsp;Guoying Fu,&nbsp;Yan Wang,&nbsp;Liang Li,&nbsp;Xianzai Yan,&nbsp;Zedong Zhang,&nbsp;Guoqiang Wu","doi":"10.1007/s11705-025-2584-8","DOIUrl":"10.1007/s11705-025-2584-8","url":null,"abstract":"<div><p>Microporous and mesoporous silicalite-1 (S-1) and titanium silicalite-1 (TS-1) zeolite supported molybdenum (Mo) catalysts were synthesized and applied in the transesterification of Jatropha seed oil (JO) to produce biodiesel. Various analytical results have revealed that the MoO<sub>3</sub> species are highly dispersed on their surface without destroying the zeolite framework and pore structure. Compared with the mesoporous 7Mo/mesoporous S-1 and 7Mo/mesoporous TS-1 catalysts, the microporous 7Mo/S-1 and 7Mo/TS-1 catalysts exhibit high Mo species contents and surface acidity, indicating that Mo species can enter the inner surface of mesoporous zeolites. However, the Mo species on the outer surface of catalysts are only activity centers owing to the accessibility between the Mo species and JO. Therefore, compared with the low activity of the S-1 and TS-1 catalysts, the 7Mo/S-1 catalyst exhibited the highest catalytic performance, with a JO conversion of 95.7% and a biodiesel selectivity of 99.9%. Finally, 7Mo/S-1 demonstrated good catalytic stability, regeneration performance and broad substrate versatility, and the fuel properties of the as-synthesized biodiesel conformed to the current international standard. The influence of the pore structure and Mo species on the catalytic activity has been clarified, providing a theoretical and practical foundation for developing efficient heterogeneous catalysts for biodiesel production.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 8","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
The potential and challenges of large language model agent systems in chemical process simulation: from automated modeling to intelligent design 大语言模型智能体系统在化工过程仿真中的潜力与挑战:从自动化建模到智能设计
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-05 DOI: 10.1007/s11705-025-2587-5
Wenli Du, Shaoyi Yang
{"title":"The potential and challenges of large language model agent systems in chemical process simulation: from automated modeling to intelligent design","authors":"Wenli Du,&nbsp;Shaoyi Yang","doi":"10.1007/s11705-025-2587-5","DOIUrl":"10.1007/s11705-025-2587-5","url":null,"abstract":"<div><p>Large language model-based agent systems are emerging as transformative technologies in chemical process simulation, enhancing efficiency, accuracy, and decision-making. By automating data analysis across structured and unstructured sources—including process parameters, experimental results, simulation data, and textual specifications—these systems address longstanding challenges such as manual parameter tuning, subjective expert reliance, and the gap between theoretical models and industrial application. This paper reviews the key barriers to broader adoption of large language model-based agent systems, including unstable software interfaces, limited dynamic modeling accuracy, and difficulties in multimodal data integration, which hinder scalable deployment. We then survey recent progress in domain-specific foundation models, model interpretability techniques, and industrial-grade validation platforms. Building on these insights, we propose a technical framework centered on three pillars: multimodal task perception, autonomous planning, and knowledge-driven iterative optimization. This framework supports adaptive reasoning and robust execution in complex simulation environments. Finally, we outline a next-generation intelligent paradigm where natural language-driven agent workflows unify high-level strategic intent with automated task execution. The paper concludes by identifying future research directions to enhance robustness, adaptability, and safety, paving the way for practical integration of large language model based agent systems into industrial-scale chemical process simulation.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 10","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Development of a flame-retardant epoxy resin with high glass transition temperature and transparency based on a diphenylphosphine oxide derivative 基于二苯基氧化膦衍生物的高玻璃化温度和高透明度阻燃环氧树脂的研制
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2575-9
Luyu Zheng, Mei Wu, Dayu Sun, Wei Zhao, Qingzhong Xue, Liang Song, Qing Yu, Haodong Duan, Hui Yang, Zhongwei Wang
{"title":"Development of a flame-retardant epoxy resin with high glass transition temperature and transparency based on a diphenylphosphine oxide derivative","authors":"Luyu Zheng,&nbsp;Mei Wu,&nbsp;Dayu Sun,&nbsp;Wei Zhao,&nbsp;Qingzhong Xue,&nbsp;Liang Song,&nbsp;Qing Yu,&nbsp;Haodong Duan,&nbsp;Hui Yang,&nbsp;Zhongwei Wang","doi":"10.1007/s11705-025-2575-9","DOIUrl":"10.1007/s11705-025-2575-9","url":null,"abstract":"<div><p>To obtain high-performance flame-retardant epoxy resin (EP), diglycidyl ether of (2,5-dihydroxyphenyl) diphenyl phosphine oxide (DPO-HQ-EP) was synthesized. EP/DPO-HQ-EP samples with varying phosphorus contents were prepared by curing a mixture of DPO-HQ-EP and diglycidyl ether of bisphenol A. The incorporation of DPO-HQ-EP significantly enhanced the flame retardancy of EP without compromising its glass transition temperature. The EP/DPO-HQ-EP/0.6 exhibited a limited oxygen index of 31.7% and achieved a V-0 rating in the vertical burning test. In the cone calorimeter test, due to the incorporation of DPO-HQ-EP, the peak of heat release rate and total heat release of EP/DPO-HQ-EP/0.6 decreased by 39.4% and 15.9% compared with the values for pure EP. A detailed investigation of the flame-retardant mechanism revealed that the improved flame retardancy of EP/DPO-HQ-EP samples was attributed to the release of phosphorus-containing free radicals and non-flammable gases in the gas phase, as well as the formation of a continuous and dense char layer in the condensed phase. Moreover, the dielectric constant and dielectric loss factor of EP/DPO-HQ-EP samples were lower than those of EP/0. The water absorptivity and transparency of EP were effectively preserved with the incorporation of DPO-HQ-EP. These findings highlighted the potential of EP/DPO-HQ-EP for industrial applications in an electrical field.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 8","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Plasma-catalytic cracking of polyethylene over Ni/Hβ zeolites to light hydrocarbon fuels and hydrogen without external heating 等离子体催化Ni/Hβ沸石上的聚乙烯裂解为轻烃燃料和氢气,无需外部加热
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2583-9
Jianhui Han, Tianqi Yun, Chengxin Hou, Bingbing Chen, Tianhao Shi, Yanan Diao, Chuan Shi
{"title":"Plasma-catalytic cracking of polyethylene over Ni/Hβ zeolites to light hydrocarbon fuels and hydrogen without external heating","authors":"Jianhui Han,&nbsp;Tianqi Yun,&nbsp;Chengxin Hou,&nbsp;Bingbing Chen,&nbsp;Tianhao Shi,&nbsp;Yanan Diao,&nbsp;Chuan Shi","doi":"10.1007/s11705-025-2583-9","DOIUrl":"10.1007/s11705-025-2583-9","url":null,"abstract":"<div><p>The rapid accumulation of plastic waste poses severe environmental challenges. Cold plasma-driven degradation offers a promising route to convert plastic waste into high-value chemicals. In this study, a single-stage plasma reactor coupling cold plasma (dielectric barrier discharge) with H<i>β</i> zeolites was developed for polyethylene degradation under relatively mild conditions, without external thermal input or participation of noble metals. The effects of zeolite pore structure and acidity toward product distribution were investigated, revealing that H<i>β</i>-25 exhibited the highest C<sub>1</sub>–C<sub>6</sub> yield (76 wt %) and a space-time yield of 103.8 mmol·g<sub>cat</sub><sup>−1</sup>·h<sup>−1</sup> compared to other zeolite catalysts during the plasma-catalytic process. Meanwhile, it was revealed that efficient pre-cracking initiated by plasma activation and the optimal structural compatibility between H<i>β</i>-zeolite pore channels and primary cracking products were the key factors enabling the selective conversion of polyethylene into C<sub>1</sub>–C<sub>6</sub> hydrocarbons. Additionally, metal incorporation significantly enhanced C–H bond cleavage compared to H<i>β</i>-25 support. Especially, 10Ni/H<i>β</i>-25 exhibited the highest hydrogen yield (7.87 mmol·g<sub>plastic</sub><sup>−1</sup>) under plasma-assisted mode, markedly surpassing its yield under thermal-cracking conditions, demonstrating the significant potential of plasma-catalytic degradation for hydrogen production from polyethylene.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 8","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Granulation mechanism and CO2 capture performance of alkaline metal salt-promoted MgO sorbents 碱金属盐促进MgO吸附剂的造粒机理及CO2捕集性能
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2576-8
Jinbo Song, Jieying Jing, Jinpeng Zhang, Yufeng Xu, Wen-Ying Li
{"title":"Granulation mechanism and CO2 capture performance of alkaline metal salt-promoted MgO sorbents","authors":"Jinbo Song,&nbsp;Jieying Jing,&nbsp;Jinpeng Zhang,&nbsp;Yufeng Xu,&nbsp;Wen-Ying Li","doi":"10.1007/s11705-025-2576-8","DOIUrl":"10.1007/s11705-025-2576-8","url":null,"abstract":"<div><p>Alkaline metal salt-promoted MgO sorbents are effective for CO<sub>2</sub> capture, but they face challenges with decreased CO<sub>2</sub> capture performance and powder elutriation in practical applications, arising due to the loss of pore structures and poor mechanical strength of alkaline metal salt-promoted MgO sorbent powder. Herein, granulation technology was employed to resolve the above problem. The optimized alkaline metal salt-promoted MgO sorbent pellets exhibited a CO<sub>2</sub> capture capacity of 11.46 mmol·g<sup>−1</sup> and a mechanical strength of 11.14 MPa. This mechanical strength was nearly three times greater than that of alkaline metal salt-promoted MgO sorbent pellets without granulation promoters. After 20 cycles, CO<sub>2</sub> capture capacity stabilized at 8.71 mmol·g<sup>−1</sup>, while mechanical strength was maintained at 8.92 MPa. Through characterization, it was revealed that the pore structure generated by the pyrolysis of the granulation promoters notably increased the specific surface area, leading to high CO<sub>2</sub> capture capacity. Meanwhile, the strengthened mechanical strength of the alkaline metal salt-promoted MgO sorbent pellets was primarily due to the <i>in situ</i> formation of a <i>γ</i>-AlOOH sol-gel cluster skeleton. Thus, this study provides an effective technological pathway to enhance the performance of the alkaline metal salt-promoted MgO sorbent pellets for industrial applications.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 12","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Critical advances in separation and purification of 5-hydroxymethylfurfural 5-羟甲基糠醛的分离纯化研究进展
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2582-x
Yanxi Qi, Bingkun Chen, Haixin Guo
{"title":"Critical advances in separation and purification of 5-hydroxymethylfurfural","authors":"Yanxi Qi,&nbsp;Bingkun Chen,&nbsp;Haixin Guo","doi":"10.1007/s11705-025-2582-x","DOIUrl":"10.1007/s11705-025-2582-x","url":null,"abstract":"<div><p>5-Hydroxymethylfurfural (5-HMF) is a versatile platform chemical that can be derived from renewable biomass using homogeneous or heterogeneous acid catalysts. However, efficiently separating and purifying 5-HMF from reaction mixtures remains a critical challenge for its high-value conversion from renewable biomass. To address this challenge, various separation methods have been developed, including distillation, adsorption, liquid-liquid extraction, supercritical carbon dioxide extraction, and integrated separation processes. This review summarizes and discusses recent advancements in the separation and purification of 5-HMF from reaction solutions. It evaluates key parameters such as adsorption capacity, separation selectivity, recovery efficiency, and their influencing factors. The liquid-liquid extraction using biphasic solvents has proven to be a simple, cost-effective, and efficient approach. The ionic liquid extraction, deep eutectic solvent extraction, supercritical carbon dioxide extraction, and integrated separation technologies (e.g., liquid-liquid extraction combined with vacuum distillation, distillation integrated with adsorption) are discussed. This review also provides insight into the mechanisms of different separation methods, which may contribute to the development of new processes for the purification of 5-HMF. This review aims to provide a theoretical basis for the future large-scale, efficient, and economic production of high-purity 5-HMF.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 8","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Density functional theory study on the selective oxidation of ethylene glycol to glycolic acid over Ptn (n = 4–55) clusters Ptn (n = 4-55)簇上乙二醇选择性氧化制乙醇酸的密度泛函理论研究
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2585-7
Shiping Wu, Yanhong Quan, Jun Ren
{"title":"Density functional theory study on the selective oxidation of ethylene glycol to glycolic acid over Ptn (n = 4–55) clusters","authors":"Shiping Wu,&nbsp;Yanhong Quan,&nbsp;Jun Ren","doi":"10.1007/s11705-025-2585-7","DOIUrl":"10.1007/s11705-025-2585-7","url":null,"abstract":"<div><p>The selective oxidation of ethylene glycol to glycolic acid on the Pt<sub>4</sub>, Pt<sub>13</sub>, Pt<sub>38</sub>, and Pt<sub>55</sub> clusters was investigated by using density-functional theory calculations. The calculated results imply that glycolic acid is preferentially generated through the dehydrogenation of ethylene glycol by OH to form HOCH<sub>2</sub>CH<sub>2</sub>O on the Pt<sub>4</sub>, Pt<sub>13</sub>, and Pt<sub>38</sub> surfaces, but that this process occurs directly without OH participation on the Pt<sub>55</sub> surface. The observed effect likely arises from the addition of OH, which modulates the electron density in the O atom of ethylene glycol, thereby affecting the cleavage of the O–H bond. Furthermore, the glycolic acid formation on the Pt<sub><i>n</i></sub> clusters is limited by the <i>β</i>–H elimination of HOCH<sub>2</sub>CH<sub>2</sub>O to HOCH<sub>2</sub>CHO, which exhibits the lowest energy barrier on the Pt<sub>13</sub> surface. It is because the <i>d</i>-band center of the Pt<sub>13</sub> cluster is closer to the Fermi energy than that of other clusters, which then enhances the electronic density of Pt. This facilitates the adsorption of HOCH<sub>2</sub>CH<sub>2</sub>O at the Pt sites and the activation of the C–H bond in HOCH<sub>2</sub>CH<sub>2</sub>O and therefore results in superior catalytic performance. This paper offers theoretical insights into the influence of Pt size on the selective oxidation of ethylene glycol to glycolic acid.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 8","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Multilevel dispersion induced graphdiyne mixed-matrix membranes for ethanol recovery 多层分散诱导石墨炔混合基质膜用于乙醇回收
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2581-y
Sen Li, Xiaoting Zhou, Tieyan Li, Yingzhou Lu, Chunxi Li, Hongwei Fan, Hong Meng
{"title":"Multilevel dispersion induced graphdiyne mixed-matrix membranes for ethanol recovery","authors":"Sen Li,&nbsp;Xiaoting Zhou,&nbsp;Tieyan Li,&nbsp;Yingzhou Lu,&nbsp;Chunxi Li,&nbsp;Hongwei Fan,&nbsp;Hong Meng","doi":"10.1007/s11705-025-2581-y","DOIUrl":"10.1007/s11705-025-2581-y","url":null,"abstract":"<div><p>Graphdiyne represents an emerging nanofiller of mixed matrix membranes for high-performance alcohol recovery by pervaporation due to its unique alkyne-rich and porous framework and hydrophobicity. However, such membranes often encounter a persistent challenge of nanofiller agglomeration within the polymer matrix, which diminishes the efficacy of graphdiyne during alcohol recovery. This study proposes a multilevel dispersion strategy that synergistically combines <i>in situ</i> confined growth, ultrasonication, atomization, and rotational shearing throughout membrane preparation to mitigate particle aggregation. The particle agglomeration scale in the polydimethylsiloxane matrix can be effectively reduced from 660 nm of triphenylamine-based graphdiyne to about 291 nm compared to the general stirring-casting method. The mixed matrix membrane loaded with 2.5 wt % triphenylamine-based graphdiyne demonstrated a permeate flux of 2.35 kg·m<sup>−2</sup>·h<sup>−1</sup> alongside a separation factor of 11.31 for a 5 wt % ethanol/water solution. Compared to the stirring-casting method, these performances represent enhancements of 41% in permeate flux and 80% in separation factor. Furthermore, a 96 h-continuous pervaporation test indicated the robust stability of the membrane, underscoring the potential for industrial alcohol recovery.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 12","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Modulating the secondary coordination sphere of the Cu site for boosting acetylene hydrochlorination 调节Cu位二次配位球促进乙炔加氢氯化反应
IF 4.5 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2025-07-01 DOI: 10.1007/s11705-025-2577-7
Dingqiang Feng, Linfeng Li, Yunsheng Dai, Wei Li, Jinli Zhang, Bao Wang, Jiangjiexing Wu
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