Korean Journal of Chemical Engineering最新文献

{"title":"Effect of Layer Thickness on Marginal Gap of Zirconia Crowns Manufactured Using Additive Manufacturing with Top-Down Approach","authors":"Sang-Kyu Lee,&nbsp;Chan Park,&nbsp;Kwang-Ho Jo,&nbsp;Sang-Hyun Choi,&nbsp;Hyein Lee,&nbsp;Kyoung-Jun Jang,&nbsp;Taekyung Yu","doi":"10.1007/s11814-025-00404-5","DOIUrl":"10.1007/s11814-025-00404-5","url":null,"abstract":"<div><p>For efficient 3D printing, fast printing (thick print layers) is necessary; however, in ceramic 3D printing, which involves printing heavy materials, changes in print speed can significantly affect precision. This study compares and analyzes the marginal fit of zirconia crowns produced with different layer thicknesses using a top-down additive manufacturing process. The results for a layer thickness of 50 μm showed lower fit in areas opposite the support compared to the results for layer thicknesses of 10 and 25 μm. It is believed that during very fast printing, the load applied during printing cannot be sustained. These findings can be used as important information for future printing of zirconia prostheses.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1143 - 1147"},"PeriodicalIF":2.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852541","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}

{"title":"Dimensionality Reduction for Clustering of Nonlinear Industrial Data: A Tutorial","authors":"Hae Rang Roh,&nbsp;Chae Sun Kim,&nbsp;Yongseok Lee,&nbsp;Jong Min Lee","doi":"10.1007/s11814-025-00402-7","DOIUrl":"10.1007/s11814-025-00402-7","url":null,"abstract":"<div><p>Dimensionality reduction is essential for industrial process data with numerous nonlinear variables to retain only the important features for visualization or subsequent tasks. This study serves as a tutorial demonstrating how various dimensionality reduction techniques perform as the complexity of process variables in toy examples increases. Among the variables, there are those containing fault signals, aiming to demonstrate the process of performing a fault detection task. The results evaluated based on three criteria showed that Uniform Manifold Approximation and Projection (UMAP) demonstrated notable results, particularly with sparse and noisy data, while also offering adequate robustness to out-of-sample test data. This tutorial provides guidance on selecting the appropriate dimensionality reduction technique based on data complexity, ultimately enabling more effective execution of subsequent tasks.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"987 - 1001"},"PeriodicalIF":2.9,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00402-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research Progress on Supported Metal Catalysts for Thermal Catalytic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furan Dicarboxylic Acid","authors":"Yanxing Wang,&nbsp;Lian Xiong,&nbsp;Xuefang Chen,&nbsp;Hailong Li,&nbsp;Hairong Zhang,&nbsp;Fen Peng,&nbsp;Xinde Chen","doi":"10.1007/s11814-025-00411-6","DOIUrl":"10.1007/s11814-025-00411-6","url":null,"abstract":"<div><p>Biomass resources have become a research hotspot in the field of chemical industry to explore new resources because of its abundant total amount and wide distribution range. Biomass-based 2,5-furanediformic acid (FDCA) has attracted much attention due to its potential as a substitute for petroleum-based terephthalic acid (PTA), which industrial production can protect the environment and save resources. 5-Hydroxymethylfurfural (HMF) is a representative biomass-based platform compound with a wide range of raw materials and a green and sustainable preparation process. Hence, the preparation of FDCA from HMF has attracted much attention in recent years. In this review, HMF oxidation reaction pathway and different catalysts and carriers are reviewed, chiefly including noble metal catalysts, non-noble metal catalysts, metal oxide carriers, non-metal oxide carriers, resin carriers, and other carriers. In particular, the great industrial application potential of the resin carriers loaded with noble metals. We have tentatively prepared an efficient catalyst for the oxidation of HMF to FDCA using macroporous resins loaded with noble metals. Finally, the industrial application of resin-supported noble metal catalysts in the preparation of FDCA by HMF is summarized and prospected. This paper focuses on the research progress of conversion of HMF to FDCA by thermal catalysis, summarizes the research achievements and exists problems of catalytic oxidation of HMF to prepare FDCA, points out the factors limiting the industrialization of HMF to FDCA, and discusses the possible solutions. Finally, the research direction is provided for the industrialization of HMF to FDCA in future.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"953 - 968"},"PeriodicalIF":2.9,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852473","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}

{"title":"Isotherm, Kinetic, and Thermodynamic Studies for Negative Pressure Cavitation Adsorption of Paclitaxel from Culture Supernatants of Taxus chinensis onto Diaion HP-20","authors":"Sangmin Yun,&nbsp;Jin-Hyun Kim","doi":"10.1007/s11814-025-00414-3","DOIUrl":"10.1007/s11814-025-00414-3","url":null,"abstract":"<div><p>In this study, a negative pressure cavitation adsorption method was developed to efficiently recover paclitaxel from <i>Taxus chinensis</i> culture supernatants using Diaion HP-20 as an adsorbent. The equilibrium adsorption data were applied to Langmuir, Freundlich, Dubinin–Radushkevich, and Elovich isotherms, and the Langmuir isotherm was found to be the most feasible. The kinetic data were in good agreement with the pseudo-second-order model, and intraparticle diffusion played a dominant role in the adsorption rate of paclitaxel according to the intraparticle diffusion model. The time for the adsorption to reach equilibrium was shortened by more than eight times at all negative pressures (− 50 to − 200 mmHg) compared to the conventional adsorption. In addition, as the negative pressure increased, the maximum adsorption capacity, adsorption rate constant, intraparticle diffusion rate constant, and intraparticle diffusion coefficient increased. The values of the thermodynamic parameters indicated that the adsorption was endothermic and spontaneous. As the negative pressure intensity increased at a given adsorption capacity (q_e = 60–100 mg/g), the isosteric heat of adsorption decreased and the adsorbent surface became more energetically homogeneous.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"827 - 841"},"PeriodicalIF":2.9,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706893","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}

{"title":"Recent Advances in Perovskite-Based Heterojunction Photocatalysts: Synthesis, Properties, and Applications","authors":"A. Baray-Calderón,&nbsp;J. L. Aleman-Ramirez,&nbsp;Evelyn B. Díaz-Cruz,&nbsp;Claudia Martinez-Alonso,&nbsp;M. Fuentes-Pérez,&nbsp;H. Olvera-Vargas,&nbsp;Dulce K. Becerra-Paniagua","doi":"10.1007/s11814-025-00416-1","DOIUrl":"10.1007/s11814-025-00416-1","url":null,"abstract":"<div><p>Photocatalysis has attracted increasing scientific interest since it represents a promising path to combat the growing energy crisis and environmental pollution problems. Among the various materials used in photocatalysis, perovskites have become ideal photocatalysts due to their superior optoelectronic, morphologic, and physicochemical properties. However, pristine perovskites still have issues, such as weak stability, limited carrier extraction, and restricted active sites. Therefore, various strategies have been developed to improve the photocatalytic activity of pure perovskites in combination with other materials to form more efficient heterojunction composites. This review paper aims to report on the latest advances in the development, characterization, and photocatalytic efficiency of perovskite-based heterojunction composites coupled with binary and ternary semiconductors, carbon materials, metal oxides, and sulfides. The photocatalytic processes covered in this work are CO₂ reduction, H₂ generation, and the degradation of organic pollutants. This study is expected to intensify research on the development of perovskite-based composites and their future application to obtain chemicals of industrial interest, biofuels, and clean water with perspective at pilot and industrial scale.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 4","pages":"803 - 826"},"PeriodicalIF":2.9,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00416-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review of Key Wasteform Properties for Radioactive and Heavy Metal Mixed Waste: Leaching Behavior and Radiological Stability","authors":"Yulim Lee,&nbsp;Yeojin Kim,&nbsp;Jaeyeong Park","doi":"10.1007/s11814-025-00407-2","DOIUrl":"10.1007/s11814-025-00407-2","url":null,"abstract":"<div><p>Mixed waste produced by nuclear facilities is difficult to dispose of, as it comprises both radiological and chemical hazards. Considering that most mixed wastes are designated as low-level waste and that heavy metals are the major chemical hazards, it is highly likely that the difficulties associated with mixed waste disposal can be resolved by solidification and stabilization (S/S) treatment. The primary material used for S/S treatment of low-level radioactive and hazardous materials is ordinary Portland cement (OPC). Conversely, vitrification is recommended for high-level radioactive waste, especially nuclear fuel material. Additionally, geopolymers with comparable performance to OPC have gained considerable attention recently. This report reviews the binding mechanisms associated with S/S of OPC, geopolymer, and glass wasteform with radionuclides and hazardous material, as well as structural degradation, leaching resistance, mechanical changes, and irradiation effects in irradiation environments. It also introduces a multi-scale modeling approach for quantitative evaluation of the physical, chemical, thermal, and mechanical properties of heterogenous OPC, geopolymers, and glass. Studies on S/S that consider the properties of mixed waste can enable safe and efficient mixed waste treatment and enhance the sustainability of nuclear power generation.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 6","pages":"1283 - 1299"},"PeriodicalIF":2.9,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135358","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}

{"title":"Biogasification Efficiency and Molecular Constraints of Tar-Rich Coal after Microwave Radiation","authors":"Yiliang Hu,&nbsp;Yuan Bao,&nbsp;Jiahao Meng,&nbsp;Dan Li,&nbsp;Ruihui Zheng","doi":"10.1007/s11814-025-00415-2","DOIUrl":"10.1007/s11814-025-00415-2","url":null,"abstract":"<div><p>Biogasification of tar-rich coal is a promising approach to clean coal utilization. However, its low hydrocarbon generation efficiency and limited research into restrictive factors impede further advancements. This study builds on previous findings to experimentally investigate the efficiency and molecular constraints of biogasification of tar-rich coal following microwave radiation. The analysis primarily focused on the pore structure, functional group composition, and low molecular weight (LMW) compounds present in the coal samples. Results indicate that an increase in microwave radiation duration from 0 to 18 min exhibits a “wave” trend in biogasification efficiency: an initial increase, a subsequent decrease, followed by another increase, before reaching a minimum at 12 min. Principal component analysis reveals that alterations in organic matter accessibility, achieved through variations in pore structure (2–10 nm) and <i>n</i>-alkane content is the key factor controlling the impact of microwave radiation on biogasification efficiency. These findings shed light on the molecular constraints of microwave radiation treatment for biomethane production from tar-rich coal and propose strategies to accelerate the practical application of coalbed methane bioengineering.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1085 - 1098"},"PeriodicalIF":2.9,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852480","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}

{"title":"Phenolic Compounds: Investigating Their Anti-Carbonic Anhydrase, Anti-Cholinesterase, Anticancer, Anticholinergic, and Antiepileptic Properties Through Molecular Docking, MM-GBSA, and Dynamics Analyses","authors":"Musa Akkus,&nbsp;Mahinur Kirici,&nbsp;Alireza Poustforoosh,&nbsp;Mehmet Kadir Erdogan,&nbsp;Ramazan Gundogdu,&nbsp;Burak Tüzün,&nbsp;Parham Taslimi","doi":"10.1007/s11814-025-00401-8","DOIUrl":"10.1007/s11814-025-00401-8","url":null,"abstract":"<div><p>Phenolic compounds are a new class of Carbonic Anhydrase inhibitors (CAIs). Despite numerous advancements in treatment approaches, cancer continues to be a growing health problem worldwide. In our study, we tested the effects of 4-hydroxy-3-methoxyacetophenone <b>(1)</b>, doxycycline hydrochloride <b>(2)</b>, 5,7-dichloro-8-hydroxyquinoline <b>(3)</b>, methyl 3,4,5-trihydroxybenzoate <b>(4)</b>, 2-hydroxy-4-methylacetophenone <b>(5)</b>, 6-hydroxy-4-methylcoumarin <b>(6)</b>, and 2,5-dihydroxyacetophenone <b>(7)</b> on Achetylcholynesterase (AChE), Butrycholynesterase (BChE), and Human Carbonic anhydrase I (hCA I) enzymes. The U2OS human osteosarcoma cell line was used to determine the anticancer potential of these phenolic compounds. The effects of the compounds on proliferation and colony formation were analyzed using the Neutral Red Uptake (NRU) assay and the clonogenic assay. The K_i values of arachidonoyl dopamine, 2,4,6-trihydroxybenzaldehyde, and 3,4-dihydroxy-5-methoxybenzoic acid were 203.80, 1170.00, and 910.00 mM, respectively, for hCA I, and 75.25, 354.00, and 1510.00 mM, respectively, for Human Carbonic anhydrase II (hCA II). Additionally, IC₅₀ values from in vivo studies were found to range from 173.25 to 1360.00 mM for CA I and CA II, respectively, using CO₂-hydratase activity methods. The NRU assay results revealed that the compounds had a dose-dependent cytotoxic effect on U2OS cells. The IC₅₀ values of the compounds in U2OS osteosarcoma cells were determined to be &gt; 100, 93.7, 81.4, 26.9, &gt; 100, 53.1, and &gt; 100 µM, respectively. Notably, methyl 3,4,5-trihydroxybenzoate <b>(4)</b>, the compound with the lowest IC₅₀ value, significantly suppressed colony formation at 5 and 10 µM concentrations. These results demonstrated that the phenolic compounds used in in vivo studies could inhibit approximately 30% of the CO2-hydratase activity of the total CA enzyme of rat erythrocytes. Furthermore, the anticancer potential of the tested compounds suggests that these molecules could pave the way for the development of new approaches in cancer treatment. The activities of the seven molecules studied were compared against AChE (PDB ID: 4M0E), BChE (PDB ID: 5NN0), hCA I (PDB ID: 2CAB), and E3 ubiquitin-protein ligase (PDB ID: 4HG7) proteins. The binding free energy of the molecule with the highest docking score is computed using MM/GBSA techniques. Finally, molecular dynamics simulations were performed between 6-hydroxy-4-methylcoumarin and the 4M0E protein over a 0–200 ns interval.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1149 - 1168"},"PeriodicalIF":2.9,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-025-00401-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bi2O3 Modified Floatable Hollow Glass Microspheres Supported TiO2 to Construct II-Scheme Heterojunction for Photocatalytic Degradation of Tetracycline Hydrochloride","authors":"Xiqiang Mao,&nbsp;Sujing Zou,&nbsp;Xue Lu,&nbsp;Shaoyi Li,&nbsp;Lei Wu,&nbsp;Jun Li,&nbsp;Jian Yang,&nbsp;Ximei Fan","doi":"10.1007/s11814-025-00390-8","DOIUrl":"10.1007/s11814-025-00390-8","url":null,"abstract":"<div><p>Photocatalysis technology has garnered significant attentions for addressing water pollution issues, however, conventional photocatalysts face great challenges such as poor recoverability, low light utilization rates, and severe caking that hinder their widespread use. This study presents the development of floating Bi₂O₃/TiO₂/HGM (BTH) photocatalysts utilizing hollow glass microspheres (HGM) as a supporting material. The optimized heterojunction of BTH-0.3 achieves an 83.9% removal rate of tetracycline hydrochloride within 60 min irradiation under simulated sunlight, surpassing the 77.3% achieved by TH-2 loaded with only TiO₂ and the 62% achieved by pure Bi₂O₃. Furthermore, BTH-0.3 exhibits outstanding photocatalytic performance across varying solution pH levels and diverse water matrices. Moreover, consistent tetracycline hydrochloride removal rates were observed over four consecutive degradation cycles, demonstrating its excellent reusability. This research offers a promising approach with practical potential for addressing water pollution challenges via photocatalytic technology.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 5","pages":"1003 - 1013"},"PeriodicalIF":2.9,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852477","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}

{"title":"Silanol-Enhanced Dehydrogenation of Ammonia Borane with Silicic Acid Catalyst","authors":"Hosun Aum,&nbsp;Jeewoo Kim,&nbsp;Hyungu Kang,&nbsp;Kyungdon Baik,&nbsp;Jihoon Jung","doi":"10.1007/s11814-025-00400-9","DOIUrl":"10.1007/s11814-025-00400-9","url":null,"abstract":"<div><p>Ammonia borane (AB), with a 19.6-wt% H₂ content, is a promising hydrogen storage material for polymer electrolyte membrane fuel cells (PEMFC). However, traditional thermal decomposition of boric acid generates ammonia, which is detrimental to fuel cells. This study explores the use of silicic acid (SA) as a catalyst for AB, yielding 12.0 wt% of H₂ at approximately 100 °C, making it suitable for fuel-cell operation. Notably, when the AB mass ratio is increased to 90 wt%, the reaction temperature increases slightly, yet it produces up to 12.3 wt% of H₂. Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses confirm that SA contains more silanol groups than SiO₂. Pyridine infrared analysis reveals that SA has a higher distribution of Lewis acid sites, which play a vital role in the dehydrogenation of AB. In addition, when in-situ mass spectrometry analysis is performed, ammonia is not detected, indicating that no filtration is required for fuel-cell applications. In conclusion, this study demonstrates that SA enhances the dehydrogenation of AB at low temperatures, achieving a high H₂ yield without ammonia production. This makes SA a promising catalyst for efficient and safe H₂ storage in fuel cells, with potential applications in mobile and aerial vehicles.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 3","pages":"679 - 687"},"PeriodicalIF":2.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480990","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}