Industrial Chemistry & Materials最新文献

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Elongated Fe–N–C containing trace atomic Co dopants for high power density PEMFCs† 用于高功率密度 PEMFC 的含有痕量钴原子掺杂剂的细长型 Fe-N-C
Industrial Chemistry & Materials Pub Date : 2024-05-10 DOI: 10.1039/D4IM00043A
Jiayao Cui, Junyong Min, Hao Wang, Jianglan Shui, Lishan Peng, Zhenye Kang, Jieyuan Liu, Qingjun Chen, Shuo Bai and Yanrong Liu
{"title":"Elongated Fe–N–C containing trace atomic Co dopants for high power density PEMFCs†","authors":"Jiayao Cui, Junyong Min, Hao Wang, Jianglan Shui, Lishan Peng, Zhenye Kang, Jieyuan Liu, Qingjun Chen, Shuo Bai and Yanrong Liu","doi":"10.1039/D4IM00043A","DOIUrl":"10.1039/D4IM00043A","url":null,"abstract":"<p>Developing single-atom Fe–N<small><sub>4</sub></small>/C catalysts is crucial for the large-scale implementation of proton exchange membrane fuel cells (PEMFCs). While Fe–N<small><sub>4</sub></small>/C catalysts are inherently active in accelerating the slow ORR process, their performance is still inferior to that of Pt/C. Herein, a trace Co-doped Fe single-atom catalyst (Fe(<em>t</em>Co)–N–C) containing more active Fe<small><sub>2</sub></small>N<small><sub>8</sub></small> sites has been synthesized. Interestingly, compared with typical FeN<small><sub>4</sub></small> sites in an Fe–N–C electrocatalyst, the Fe<small><sub>2</sub></small>N<small><sub>8</sub></small> sites generate a larger Fe–N bond length due to Co-doping. The elongated Fe–N bond in Fe<small><sub>2</sub></small>N<small><sub>8</sub></small> lowers the d-band center and charge density of iron sites, enhancing the ORR process by facilitating the formation of *OOH and generation and desorption of *OH. Fe(<em>t</em>Co)–N–C manifested excellent acidic and alkaline ORR activity, with a half-wave potential (<em>E</em><small><sub>1/2</sub></small>) of 0.80 V in HClO<small><sub>4</sub></small> solution and 0.89 V in KOH medium. More importantly, high peak power densities (<em>P</em><small><sub>max</sub></small>) were realized by applying Fe(<em>t</em>Co)–N–C in PEMFCs, with the <em>P</em><small><sub>max</sub></small> reaching 890 mW cm<small><sup>−2</sup></small> in H<small><sub>2</sub></small>–O<small><sub>2</sub></small> and 380 mW cm<small><sup>−2</sup></small> in H<small><sub>2</sub></small>–air. Additionally, trace Co dopants in the catalyst improved carbon graphitization and provided high ORR catalytic stability. This research introduces an innovative approach to engineering highly active Fe<small><sub>2</sub></small>N<small><sub>8</sub></small> sites, providing valuable insights for the sustainable progress of PEMFC technology.</p><p>Keywords: Proton exchange membrane fuel cells; Oxygen reduction reaction; Platinum-group-metal-free catalysts; Single-atom catalysts; Bimetallic active sites.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 634-643"},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00043a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140931619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of inorganic molten salt composite phase change materials and study on their electrothermal conversion properties† 无机熔盐复合相变材料的制备及其电热转换性能研究
Industrial Chemistry & Materials Pub Date : 2024-05-07 DOI: 10.1039/D4IM00009A
Jiandong Zuo, Hongjie Luo, Ziye Ling, Zhengguo Zhang, Xiaoming Fang and Weiwei Zhang
{"title":"Preparation of inorganic molten salt composite phase change materials and study on their electrothermal conversion properties†","authors":"Jiandong Zuo, Hongjie Luo, Ziye Ling, Zhengguo Zhang, Xiaoming Fang and Weiwei Zhang","doi":"10.1039/D4IM00009A","DOIUrl":"10.1039/D4IM00009A","url":null,"abstract":"<p>Due to their limitations in conductivity and shape stability, molten salt phase change materials have encountered obstacles to effectively integrating into electric heating conversion technologies, which are crucial in energy storage and conversion fields. In this study, we synthesized an inorganic molten salt composite phase change material (CPCM) with enhanced conductivity and shape stability using a gas-phase silica adsorption method. Our findings revealed the regularities in thermal properties modulation by expanded graphite (EG) within CPCM and delved into its characteristics of electric heating conversion. The study elucidated that a conductive network is essentially formed when the EG content exceeds 3 wt%. Following the fabrication of CPCM into electric heating conversion modules, we observed a correlation between the uniformity of module temperature and the quantity of EG, as well as the distribution of electrode resistance and external voltage magnitude. Building upon this observation, we proposed a strategy to adjust the module temperature field with an electric field. Comparing the proposed direct electrical heating energy storage method with traditional indirect electrical heating methods, the energy storage rate increases by 93.8%, with an improved temperature uniformity. This research offers valuable insights for the application of molten salt electric heating conversion CPCMs.</p><p>Keywords: Thermal energy storage materials; Inorganic molten salts; Composite phase transition materials; Electrothermal conversion; Physical property regulation.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 571-586"},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00009a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An electron beam irradiation-assisted coating method for the regulation of hydrophilicity and hydrophobicity† 电子束辐照辅助调节亲水和疏水涂层方法
Industrial Chemistry & Materials Pub Date : 2024-05-06 DOI: 10.1039/D4IM00015C
Haozhe Li, Keyan Sheng, Zhiyan Chen, Shuai Hao, Zijian Zhou, Zhenyi Zhang, Xinwen Liu, Mianzhi Xiong, Yanlong Gu and Jiang Huang
{"title":"An electron beam irradiation-assisted coating method for the regulation of hydrophilicity and hydrophobicity†","authors":"Haozhe Li, Keyan Sheng, Zhiyan Chen, Shuai Hao, Zijian Zhou, Zhenyi Zhang, Xinwen Liu, Mianzhi Xiong, Yanlong Gu and Jiang Huang","doi":"10.1039/D4IM00015C","DOIUrl":"10.1039/D4IM00015C","url":null,"abstract":"<p>Developing a stable, reliable, and industrially compatible method to control hydrophobicity is crucial for separation, transportation, and the generation of special surfaces. An e-HMS-PDMS silica gel nanoparticle coating was prepared using a two-step electron beam irradiation (EBI) process, consisting of (i) grafting of two organic groups onto thiol-functionalized hollow mesoporous silica (HMS-SH) with 10 MeV EBI and (ii) curing of polydimethylsiloxane (PDMS) onto silicone rubber using the HMS hybrid materials prepared in step i as an additive with 200 keV EBI. The tuneable grafting of functional groups and the surface properties of the silica, which was embedded in the PDMS layer, allowed us to precisely control the hydrophilicity of the PDMS layer by means of altering the grafting gradient of the silica and the loading ratio of the monomers. A diverse range of vinyl-structured monomers can be used in this method, and the selection of suitable monomers is vital in determining the physical properties of the coating layer. The hydrophilicity of the coating can be linearly controlled within a specific range (50° to 155°) by using suitable monomers, allowing for the design of surfaces with specific hydrophilic and hydrophobic requirements.</p><p>Keywords: Electron beam irradiation; Nanoparticle composite coating; Hydrophilicity/hydrophobicity; Thiol-ene click reaction.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 3","pages":" 458-468"},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00015c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carboxylic ligands to enhance material recovery from construction waste to produce CaCO3 for carbon utilization† 羧基配体可提高建筑垃圾中的材料回收率,生成 CaCO3 用于碳利用
Industrial Chemistry & Materials Pub Date : 2024-05-03 DOI: 10.1039/D4IM00025K
Jonah M. Williams, Diandian Zhao, Ning Zhang, Shiho Kawashima and Aaron J. Moment
{"title":"Carboxylic ligands to enhance material recovery from construction waste to produce CaCO3 for carbon utilization†","authors":"Jonah M. Williams, Diandian Zhao, Ning Zhang, Shiho Kawashima and Aaron J. Moment","doi":"10.1039/D4IM00025K","DOIUrl":"10.1039/D4IM00025K","url":null,"abstract":"<p>The decarbonization of the built environment is a pressing issue to achieve CO<small><sub>2</sub></small> reduction targets in the concrete industry. Carbon mineralization of construction and demolition waste (C&amp;DW) is an attractive pathway to capture of CO<small><sub>2</sub></small> as stable carbonates which can be re-utilized and upcycled in a circularized fashion through the creation of new building blocks. Material recovery from the C&amp;DW is often performed in hydrometallurgical leaching using acidic media; however, this process is often hindered by solubility issues and passivation. To ensure high recoveries of these elements, ligands can be used to enhance dissolution. Carboxylic acids are used in conventional hydrometallurgical mineral processing, such as leaching, floatation, and solvent extraction, and are desired due to their affordability and stability. In this study, we explore the dissolution of waste cement pastes in acidic conditions under the presence of four carboxylic acid ligands: formate, acetate, glutamate, and citrate. The leaching kinetics are categorized and the pseudo-rate constants are established, demonstrating the advantages of these agents to enhance reaction rates in the general order of citrate ⋙ formate &gt; acetate &gt; glutamate &gt; control. The characterization of the post-extraction reactor residue (PERR) revealed a significant increase in Si-content. Finally, the leachate was carbonated to produce calcium carbonate, which was characterized for its use based on morphology and size. Glutamate demonstrated distinct advantages compared to other ligands, with a dual function of not only improving leachability of cement but promoting and stabilizing vaterite during crystallization. Overall, this study motivates the use of sustainable ligands to enhance material recovery during the dissolution of alkaline wastes for carbon mineralization.</p><p>Keywords: Carbon mineralization; Material recovery; Leaching; Ligands; Carboxylic acids; Calcium carbonates; Carbon capture utilization and storage.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 1","pages":" 69-86"},"PeriodicalIF":0.0,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/im/d4im00025k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140835917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Asymmetric microfiber actuators with reciprocal deformation† 具有往复变形的不对称微纤维致动器
Industrial Chemistry & Materials Pub Date : 2024-04-19 DOI: 10.1039/D4IM00017J
Yuhang Lu, Shiyu Wang and Pingan Zhu
{"title":"Asymmetric microfiber actuators with reciprocal deformation†","authors":"Yuhang Lu, Shiyu Wang and Pingan Zhu","doi":"10.1039/D4IM00017J","DOIUrl":"10.1039/D4IM00017J","url":null,"abstract":"<p>With the trend towards miniaturization in soft robotics, most microactuators encounter challenges in achieving versatile deformations. Here, we present an innovative microactuator design featuring reciprocal deformation, activated solely by humidity changes. These microactuators adopt an asymmetric microfiber configuration, characterized by a core–shell structure with a hydrophilic shell encapsulating hydrophobic microparticles. Utilizing droplet microfluidics for fabrication enables precise control over microfiber morphology and internal microparticles. During hygroscopic actuation, these microactuators undergo a unique two-stage deformation, exhibiting opposite trends in curvature variation—a stark departure from the unidirectional deformations observed in previous microactuators. The anisotropy inherent in asymmetric microfibers governs water absorption and desorption, driving this distinctive reciprocal deformation. These microactuators demonstrate versatility in controlled droplet transport and solid cargo manipulation, expanding their potential applications. This study not only unveils novel mechanisms but also broadens the functional spectrum of microactuators.</p><p>Keywords: Microactuators; Reciprocal deformation; Droplet microfluidics; Asymmetric microfiber; Liquid templates.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 3","pages":" 441-450"},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00017j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140628004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photo-polymerization using quantum dots for stable epoxy coatings† 利用量子点进行光聚合以获得稳定的环氧树脂涂料
Industrial Chemistry & Materials Pub Date : 2024-04-18 DOI: 10.1039/D4IM00026A
Keroles B. Riad, M. Reza Kholghy and Paula M. Wood-Adams
{"title":"Photo-polymerization using quantum dots for stable epoxy coatings†","authors":"Keroles B. Riad, M. Reza Kholghy and Paula M. Wood-Adams","doi":"10.1039/D4IM00026A","DOIUrl":"10.1039/D4IM00026A","url":null,"abstract":"<p>Photo-polymerization is at the foundation of many industries such as dentistry, coatings, adhesives, and stereolithography 3D printing. However, the organic cationic photo-initiators currently used are toxic, expensive, and difficult to tune with respect to the wavelength of light required to initiate polymerization reactions. For example, current stereolithography 3D printing resins are unstable under sunlight. Here, we demonstrate that less expensive and non-toxic titania quantum dots made <em>via</em> the scalable flame spray pyrolysis technology can photo-polymerize epoxy when exposed to UVC (not present in sunlight on Earth), while being insensitive to UVA (present in natural sunlight on Earth) leading to resins that are photo-stable during end use. We use NMR and FTIR to demonstrate that photo-polymerization is catalyzed under UVC but not UVA, and nanoindentation to monitor the mechanical stability of epoxy films during post-polymerization UVA exposure. This approach allows precise control over the wavelengths of light under which photo-polymerization can and cannot occur, and is also transferable to other photo-catalytic reactions.</p><p>Keywords: Polymers; Photo-polymerization; Catalysis; Quantum dots; Nanotechnology.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 644-650"},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00026a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aqueous Zn–CO2 batteries: a route towards sustainable energy storage Zn-CO2 水电池:实现可持续能源储存的途径
Industrial Chemistry & Materials Pub Date : 2024-04-16 DOI: 10.1039/D4IM00014E
Yanxiu Liu, Junjie Chen, Weichen Li, Yu Zhang, Xianwei Fu, Erling Li, Shangbin Jin, Li-Ming Yang, Zhihong Tian, Markus Antonietti and Tianxi Liu
{"title":"Aqueous Zn–CO2 batteries: a route towards sustainable energy storage","authors":"Yanxiu Liu, Junjie Chen, Weichen Li, Yu Zhang, Xianwei Fu, Erling Li, Shangbin Jin, Li-Ming Yang, Zhihong Tian, Markus Antonietti and Tianxi Liu","doi":"10.1039/D4IM00014E","DOIUrl":"10.1039/D4IM00014E","url":null,"abstract":"<p>In recent years, the concept of rechargeable aqueous Zn–CO<small><sub>2</sub></small> batteries has attracted extensive attention owing to their dual functionality of power supply and simultaneous conversion of CO<small><sub>2</sub></small> into value-added chemicals or fuels. The state-of-the-art research has been mainly focused on the exploration of working mechanisms and catalytic cathodes but hardly applies an integrative view. Although numerous studies have proven the feasibility of rechargeable aqueous Zn–CO<small><sub>2</sub></small> batteries, challenges remain including the low CO<small><sub>2</sub></small> conversion efficiency, poor battery capacity, and low energy efficiency. This review systematically summarizes the working principles and devices, and the catalytic cathodes used for Zn–CO<small><sub>2</sub></small> batteries. The challenges and prospects in this field are also elaborated, providing insightful guidance for the future development of rechargeable aqueous Zn–CO<small><sub>2</sub></small> batteries with high performance.</p><p>Keywords: Zn–CO<small><sub>2</sub></small> battery; CO<small><sub>2</sub></small> reduction reaction; Working mechanism; Electrocatalysts.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 514-532"},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00014e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140564050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a double-side ordered membrane electrode assembly based on titanium nitride nanoarrays 开发基于氮化钛纳米阵列的双面有序膜电极组件
Industrial Chemistry & Materials Pub Date : 2024-03-21 DOI: 10.1039/D4IM00008K
Lingfeng Xuan, Deqing Mei, Caiying Zhou, Wenze Mao and Yancheng Wang
{"title":"Development of a double-side ordered membrane electrode assembly based on titanium nitride nanoarrays","authors":"Lingfeng Xuan, Deqing Mei, Caiying Zhou, Wenze Mao and Yancheng Wang","doi":"10.1039/D4IM00008K","DOIUrl":"10.1039/D4IM00008K","url":null,"abstract":"<p>The membrane electrode assembly (MEA) plays a crucial role in the functionality of proton exchange membrane fuel cells (PEMFCs). The channels present within the catalyst layer of MEAs exhibit a disordered configuration, which consequently give rise to low efficiency in mass transportation. In order to enhance the mass transfer performance and the corrosion resistance of the catalyst layer, this paper developed a double-side ordered MEA based on TiN nanorod arrays. We synthesized TiN nanorod arrays on the ITO surface by a seed-assisted hydrothermal reaction and nitriding treatment, and coated the catalyst uniformly on the TiN support by ultrasonic spraying. Then the double-side ordered MEA was fabricated by transfer printing, and achieved a peak power of 678.30 mW cm<small><sup>−2</sup></small> with a cathode platinum loading of 0.2 mg cm<small><sup>−2</sup></small> at 80 °C and anode saturated humidity. After 200 hours of accelerated stress test (AST) at 90 °C and 30/30% relative humidity, the peak performance only dropped by 4.8%. These results provide substantial evidence for the effectiveness of our developed double-side ordered MEA which can mitigate catalyst polarization corrosion. Thus, this study reveals the immense potential of the TiN nanorod array-based double-side ordered MEA in advancing the development of efficient and stable MEAs.</p><p>Keywords: PEMFC; Preparation of MEA; Ordered MEA; TiN nanorod array; Catalyst carrier.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 622-633"},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00008k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140198717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement of octane number in FCC gasoline through the extraction with urea/thiourea complex based on property analysis 基于性能分析的尿素/硫脲复合物萃取法改善催化裂化汽油的辛烷值
Industrial Chemistry & Materials Pub Date : 2024-03-16 DOI: 10.1039/D4IM00005F
Lin Gao, Chunyu Geng, Botao Teng, Hongwei Xiang, Xiaodong Wen, Yong Yang and Yongwang Li
{"title":"Improvement of octane number in FCC gasoline through the extraction with urea/thiourea complex based on property analysis","authors":"Lin Gao, Chunyu Geng, Botao Teng, Hongwei Xiang, Xiaodong Wen, Yong Yang and Yongwang Li","doi":"10.1039/D4IM00005F","DOIUrl":"10.1039/D4IM00005F","url":null,"abstract":"<p>In the research described in this paper, the uses of the urea/thiourea complexation approach were employed to enhance the octane number of FCC gasoline by extracting <em>n</em>-alkanes. It was observed that adding thiourea improved the removal of the <em>n</em>-alkanes from gasoline, and matching results were obtained from experiments using model samples. Molecular dynamics simulation revealed that the stability of urea complexes increased as the carbon number of the <em>n</em>-alkanes was raised, whereas lighter <em>n</em>-alkane molecules exhibited a lower propensity for complex formation with urea. This finding is in agreement with the results of the DSC measurement at the decomposition temperature. Furthermore, infrared spectrum analysis, XRD characterization, and reaction heat measurements indicated that although thiourea was introduced into the reaction system, it did not actively participate in the complexation reaction. In summary, the introduction of thiourea resulted in an increased solubility of urea in an ethanol solution and enhanced the reaction heat, suggesting its beneficial role in promoting urea complex formation and facilitating <em>n</em>-alkane removal from FCC gasoline.</p><p>Keywords: Urea; Thiourea; FCC gasoline; Thermoanalysis; Molecular dynamics.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 613-621"},"PeriodicalIF":0.0,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00005f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140156690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cross-polymerization between bio-oil and polyaniline: synergistic effects on pore development in subsequent activation and adsorption of phenol† 生物油与聚苯胺之间的交叉聚合:对随后活化和吸附苯酚过程中孔隙发育的协同效应
Industrial Chemistry & Materials Pub Date : 2024-03-07 DOI: 10.1039/D4IM00001C
Baihong Li, Chao Li, Dianqiang Li, Lijun Zhang, Shu Zhang, Yi Wang, Song Hu, Jun Xiang, Mortaza Gholizadeh and Xun Hu
{"title":"Cross-polymerization between bio-oil and polyaniline: synergistic effects on pore development in subsequent activation and adsorption of phenol†","authors":"Baihong Li, Chao Li, Dianqiang Li, Lijun Zhang, Shu Zhang, Yi Wang, Song Hu, Jun Xiang, Mortaza Gholizadeh and Xun Hu","doi":"10.1039/D4IM00001C","DOIUrl":"10.1039/D4IM00001C","url":null,"abstract":"<p>Bio-oil is a major product from pyrolysis of biomass which serves as a carbon source to produce carbon material due to its high reactivity towards polymerization itself or cross-polymerization with other organic feedstocks. In this study, activation of polyaniline (PANI) mixed with wheat straw-derived bio-oil and K<small><sub>2</sub></small>C<small><sub>2</sub></small>O<small><sub>4</sub></small> at 800 °C was conducted, aiming to understand the effect of potential interactions of bio-oil with PANI on pore development of resulting activated carbon (AC). The results revealed cross-polymerization reactions between PANI and bio-oil during direct activation, which increased the yield of AC from 13.0% (calculated average) to 15.0%, the specific surface area from 1677.9 m<small><sup>2</sup></small> g<small><sup>−1</sup></small> (calculated average) to 1771.3 m<small><sup>2</sup></small> g<small><sup>−1</sup></small>, and the percentage of micropores from 94.3% to 97.1%. In addition, pre-polymerization of PANI and bio-oil at 200 °C before activation was also conducted. Such pretreatment could increase the AC yield from 13.0% to 23.3%, but the specific surface area decreased to 1381.8 m<small><sup>2</sup></small> g<small><sup>−1</sup></small>. The pre-polymerization formed the organics that were more resistant towards cracking/gasification, but introduced oxygen-rich functionalities. This made AC highly hydrophilic, rendering a much higher capability for adsorption of phenol despite the smaller specific surface area. Additionally, the AC with developed pore structures facilitated dispersion of nickel in Ni/AC and enhanced the catalytic activity for hydrogenation of <em>o</em>-chloronitrobenzene and vanillin.</p><p>Keywords: Polyaniline; Bio-oil; Activation; Activated carbon; Pre-polymerization; Adsorption.</p>","PeriodicalId":29808,"journal":{"name":"Industrial Chemistry & Materials","volume":" 4","pages":" 600-612"},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/im/d4im00001c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140056770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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