Korean Journal of Chemical Engineering最新文献_第5页

Influence of Acid Washing Using Cattle Manure on Thermogravimetric Characteristics and Pyrolysis Kinetics in a Micro-tubing Reactor 牛粪酸洗对微管反应器热重特性及热解动力学的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-21 DOI: 10.1007/s11814-024-00308-w

Jae-Rak Jeon, In-Jun Hwang, Thuan Anh Vo, Jinsoo Kim, Hyun Tae Hwang, Suk Soon Choi, Seung-Soo Kim

{"title":"Influence of Acid Washing Using Cattle Manure on Thermogravimetric Characteristics and Pyrolysis Kinetics in a Micro-tubing Reactor","authors":"Jae-Rak Jeon, In-Jun Hwang, Thuan Anh Vo, Jinsoo Kim, Hyun Tae Hwang, Suk Soon Choi, Seung-Soo Kim","doi":"10.1007/s11814-024-00308-w","DOIUrl":"10.1007/s11814-024-00308-w","url":null,"abstract":"<div><p>Ash content is known to be one of the problems in the pyrolysis of cattle manure (CM) biomass. In this study, to reduce the ash content in CM, the original material was pretreated with a nitric acid solution, and the effect of the acid-washing pretreatment of CM on the pyrolysis characteristics was investigated. The experiments were performed using a micro-tubing reactor at 375–425 °C with different reaction times. The main components of the inorganic content before and after acid-washing were Ca and K, which decreased after the treatment. As a result of calculating the activation energy at a conversion of 90% using Friedman’s method, it was calculated to be 540.80 kJ/mol for the original sample that decreased to 409.93 and 391.53 kJ/mol for the samples washed with 10 and 20 wt% diluted acid solutions, respectively. In addition, a reaction kinetic model for the CM samples was established using experimental data. It was found that as the ash content decreased by the acid-washing, the char yield decreased, while the yields of bio-oil and gas increased. Finally, the compositions of the gas and bio-oil obtained through the pyrolysis of CM were systematically characterized.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"143 - 155"},"PeriodicalIF":2.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of Perovskite Active Layer Thickness on the Performance of Photovoltaic Cells and Radiation Detectors 钙钛矿活性层厚度对光伏电池和辐射探测器性能的影响

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-18 DOI: 10.1007/s11814-024-00330-y

Sung-Pil Yoon, Sung-Jun Park, Ahreum Park, Jangwon Byun, Beomjun Park, Man-Jong Lee

{"title":"Effect of Perovskite Active Layer Thickness on the Performance of Photovoltaic Cells and Radiation Detectors","authors":"Sung-Pil Yoon, Sung-Jun Park, Ahreum Park, Jangwon Byun, Beomjun Park, Man-Jong Lee","doi":"10.1007/s11814-024-00330-y","DOIUrl":"10.1007/s11814-024-00330-y","url":null,"abstract":"<div><p>Perovskite materials are used as the core active layer in a variety of devices, including solar cells and radiation detectors, and the performance of these devices is strongly influenced by the thickness of the perovskite active layer. This study compares the performance of photovoltaic cells and radiation detectors with the same device architecture but different perovskite active layer thicknesses. For perovskite solar cells, the power conversion efficiency (PCE) tends to increase with increasing active layer thickness and then decreases beyond a certain limit. On the other hand, the X-ray response characteristics of perovskite X-ray detectors tend to increase continuously with increasing active layer thickness. This means that the collections of total charges generated by photon or radiation are different, and their collection/recombination mechanisms of the charges generated in the perovskite active layer of each device are different. To realize efficient perovskite-based electro-optical devices, optimization of the device architecture, including the active layer thickness, is essential, and this work aims to provide a direction for the development of X-ray detectors in n-i-p device structures.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3783 - 3789"},"PeriodicalIF":2.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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A Feasibility Study on the Vaporization of Liquefied Carbon Dioxide Due to Heat Transfer in Submerged Pipeline with Start-Up, Shutdown, and Abnormal Dynamic Simulation Scenarios Prediction 含启动、停机及异常动态模拟情景预测的水下管道换热液化二氧化碳汽化可行性研究

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-17 DOI: 10.1007/s11814-024-00259-2

Daniel Owusu Asante, Russel J. Galanido, Ilsu Park, Philsung Hwang, Jungki Cheol, Jungho Cho

{"title":"A Feasibility Study on the Vaporization of Liquefied Carbon Dioxide Due to Heat Transfer in Submerged Pipeline with Start-Up, Shutdown, and Abnormal Dynamic Simulation Scenarios Prediction","authors":"Daniel Owusu Asante, Russel J. Galanido, Ilsu Park, Philsung Hwang, Jungki Cheol, Jungho Cho","doi":"10.1007/s11814-024-00259-2","DOIUrl":"10.1007/s11814-024-00259-2","url":null,"abstract":"<div><p>The vaporization of liquefied carbon dioxide (LCO<sub>2</sub>) resulting from heat transfer in undersea pipeline flow was examined in this feasibility study. The study aimed to assess how several factors, including flow velocity, temperature, and height, affected the rate at which CO<sub>2</sub> evaporated in a submerged pipeline. Ansys Fluent and Aspen Plus were two simulation tools used for the analysis. For the assessment, the SRK thermodynamic model was chosen. Start-up, shutdown, and abnormal dynamic studies were further conducted to ascertain the safe operation of the pipeline using Aspen Plus and Aspen Dynamics. The study emphasizes the need to account for and consider heat transfer in the design and operation of these pipelines. It also offers insightful information about the behavior of CO<sub>2</sub> in undersea pipelines. Reliable seabed and oceanographic data were obtained with the corresponding temperatures for the prediction of pipeline landfall. The maximum pressure of 76.61 barg was established at Node 11 but further dropped at the last 200 m pipe segment (N11–N13) to achieve an outlet pressure of 59.72 barg. The pressure loss was due to gravity, since the fluid was directed upward to the sea platform. There was a gradual drop in temperature along the pipeline. The temperature at the pipe outlet was calculated to be 3.33 °C. The results of this study can be applied to improve efficiency and lower the risk of accidents associated with the design and operation of underwater pipelines for the transportation and storage of CO<sub>2</sub>. The findings of this work are significant, since they provide a thorough grasp of how CO<sub>2</sub> behaves in submerged pipes and knowledge that may be utilized to guarantee the effective and safe transit and storage of this material.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"43 - 56"},"PeriodicalIF":2.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells Employing a Cerium Oxide Passivation Layer 采用氧化铈钝化层增强倒置钙钛矿太阳能电池的光伏性能

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-15 DOI: 10.1007/s11814-024-00333-9

In Choi, Bonkee Koo, Subin Yu, Wooyeon Kim, Min Jae Ko

{"title":"Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells Employing a Cerium Oxide Passivation Layer","authors":"In Choi, Bonkee Koo, Subin Yu, Wooyeon Kim, Min Jae Ko","doi":"10.1007/s11814-024-00333-9","DOIUrl":"10.1007/s11814-024-00333-9","url":null,"abstract":"<div><p>Metal halide perovskite solar cells (PSCs) have achieved a power conversion efficiency (PCE) of 26.7%, establishing them as strong candidates for next-generation solar cell technology owing to their unique optoelectronic properties and solution processability. However, defects at grain boundaries and interfaces within the perovskite layer limit both stability and performance. Therefore, this study aims to mitigate these challenges by introducing a thin layer of amorphous cerium oxide (CeO<sub>x</sub>) as an inorganic passivation layer, offering advantages over conventional organic passivation layers. A thin amorphous CeO<sub>x</sub> passivation layer enhances the built-in electric field in the perovskite, improving charge transfer without the increased resistance of thick layers generally used as electron transport layers (ETLs). This approach yielded an inverted PSC with a PCE of 19.30%, securing high performance with photostability. This result highlights the potential of thin CeO<sub>x</sub> passivation to enhance the efficiency and stability of PSCs.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3813 - 3820"},"PeriodicalIF":2.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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Eco-friendly Fabrication of Perovskite Solar Cells: From Material Engineering to Recycling 钙钛矿太阳能电池的环保制造：从材料工程到回收

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-13 DOI: 10.1007/s11814-024-00331-x

Olzhas Kurman, Eunju Jung, Ji-Youn Seo

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Preparation of High-Quality ZSM-22 Nanocrystals by the Seed-Assisted Method from Industrial Raw Materials

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-13 DOI: 10.1007/s11814-024-00329-5

Mingrui Li, Wenbo Jiang, Yanyan Zhu

{"title":"Preparation of High-Quality ZSM-22 Nanocrystals by the Seed-Assisted Method from Industrial Raw Materials","authors":"Mingrui Li, Wenbo Jiang, Yanyan Zhu","doi":"10.1007/s11814-024-00329-5","DOIUrl":"10.1007/s11814-024-00329-5","url":null,"abstract":"<p>It is of great importance to deeply understand the engineering scale-up process of synthesis of zeolite in both fundamental research and industrial applications. Here we report high-quality ZSM-22 nanocrystals synthesized from industrial raw materials by adding ZSM-22 seed at 20-L scale. The optimal synthesis conditions and the influence of seed during the synthesis of ZSM-22 using industrial materials are investigated. The role of the seed in the zeolite synthesis is to promote nucleation and the quality of ZSM-22. From the results of XRD patterns, N<sub>2</sub> sorption, <sup>27</sup>Al NMR spectra, SEM image, TEM image, and NH<sub>3</sub>-TPD profiles characterization, it is found that adding seed is an effective method for synthesis of ZSM-22 using the industrial raw materials. A successful synthesis of ZSM-22 nanocrystals is proved with two different silica sol as indicated by the XRD patterns. High-quality ZSM-22 nanocrystals are successfully synthesized by a seeded approach and this synthesis can be scaled up to a 20-L reactor without obvious change in the zeolite properties and exhibits comparable catalytic performance with commercial ZSM-22 in butanol to hydrocarbon reaction.</p>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 3","pages":"649 - 658"},"PeriodicalIF":2.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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Synthesis of Reusable IrPt/Fe2O3 Nanocatalysts Using Antisolvent Crystallization-Based Method

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-13 DOI: 10.1007/s11814-024-00328-6

Cun Liu, Zhe Liu, Tao Zhou, Xiaomei Xu, Taekyung Yu

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Sputtered Nickel Oxide Hole Transporting Layers for Perovskite Solar Cells 钙钛矿太阳能电池的溅射镍氧化物空穴传输层

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-12 DOI: 10.1007/s11814-024-00325-9

Yonghui Lee, Sang Il Seok

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Strategies to Enhance the Performance of Cu(In,Ga)(S,Se)2 Thin-Film Solar Cells by Doping Approaches 用掺杂方法提高Cu(In,Ga)(S,Se)2薄膜太阳能电池性能的策略

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-10 DOI: 10.1007/s11814-024-00326-8

Da-Seul Kim, Byoung Koun Min

{"title":"Strategies to Enhance the Performance of Cu(In,Ga)(S,Se)2 Thin-Film Solar Cells by Doping Approaches","authors":"Da-Seul Kim, Byoung Koun Min","doi":"10.1007/s11814-024-00326-8","DOIUrl":"10.1007/s11814-024-00326-8","url":null,"abstract":"<div><p>With the deepening climate emergency and the growing imperative to move beyond fossil fuels, Cu(In,Ga)(S,Se)<sub>2</sub>—commonly referred to as CIGS—thin-film solar cells are gaining prominence as a key pillar in the quest for long-term energy sustainability. Recently, CIGS solar cells have gained substantial recognition after achieving an impressive efficiency of over 23.6%. Despite this advancement and high-efficiency, the significant costs and technical complexities involved still pose major challenges to large-scale commercialization in vacuum-based processes. Solution-processed CIGS solar cells are being presented as a viable alternative to overcome these issues. This process allows for the formation of consistent thin films across large surfaces while also showing promise for reducing production costs. However, efficiency remains a key challenge and continues to be a critical factor for commercialization. The doping of new elements in CIGS absorber is an effective way to address these issues, significantly enhancing the performance of CIGS solar cells. Over the years, many elements have been incorporated into vacuum-based processes through doping, significantly contributing to high efficiency. Most notably, Uppsala University (UU) recently achieved a record efficiency of 23.6% by incorporating Sodium (Na), silver (Ag), and Rubidium (Rb). These findings imply that doping could potentially serve as a major catalyst for maximizing efficiency in solution-processed solar cells. This article reviews the latest developments in CIGS solar cells technology, summarizing the highest recorded efficiencies resulting from specific dopant incorporation strategies and combinations. Furthermore, we propose strategic approaches to improving the efficiency of solution-processed CIGS solar cells and discuss potential future research directions.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3771 - 3781"},"PeriodicalIF":2.9,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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Colloidal Semiconductor Cadmium Chalcogenide Nanorods and Nanoplatelets: Growth, Optical Anisotropy and Directed Assembly 胶体半导体氯化镉纳米棒和纳米片：生长、光学各向异性和定向组装

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-11-06 DOI: 10.1007/s11814-024-00321-z

Jaeyoon Moon, Haejin Jeon, Dahin Kim

引用次数: 0