{"title":"Effect of Atmosphere-Controlled Pressurized Steaming on the Structure and Cracking Performance of As-Prepared LaY Zeolite","authors":"Chengqiang Wang, Enhui Xing, Yibin Luo, Ying Ouyang, Xingtian Shu, Xiuzhi Gao","doi":"10.1021/acs.iecr.5c03606","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c03606","url":null,"abstract":"This study focuses on exploring the impact of atmosphere-controlled pressurized steaming (at 500 °C and 0.3 MPa) on the structure and catalytic performance of LaY zeolite. A weakly alkaline calcination atmosphere (pH 9.6) is introduced during the pressurized steaming process. This introduction significantly promotes the solid-state migration of La<sup>3+</sup> ions from supercages to sodalite cages, resulting in an 18% increase in the <i>I</i><sub>1</sub>/<i>I</i><sub>2</sub> ratio. It also enhances the B/L acid ratio by 45% and improves the hydrothermal stability of the zeolite with the crystallinity retention rate rising by 25%. The proposed process achieves a balanced dealumination-desilication mechanism. While maintaining the crystallinity of the zeolite, it generates uniform 3–4 nm intracrystalline mesopores. The mesopore volume accounts for an increasing proportion of the total pore volume, from 5% to 16%. Catalytic evaluation results show that, compared with the atmospheric calcination reference sample, the heavy oil conversion rate increases by 8.8% points, the gasoline yield rises by 8.0% points, and the coke yield is lower. This can be attributed to the mesopores improving the accessibility of reactants and reducing diffusion resistance. This research demonstrates that the atmosphere-controlled pressurized steaming under a weakly alkaline calcination atmosphere is an effective strategy for preparing LaY zeolite with high stability and high activity, which is suitable for heavy oil cracking.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"25 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247586","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}
Marvin Martins dos Santos, Iuri Soter Viana Segtovich, Ingrid Azevedo de Oliveira, Frederico Wanderley Tavares, Adriana Teixeira, Leandro Saraiva Valim, Antonin Chapoy
{"title":"Determination of Water Content For Hydrate Formation in Gas-Dominant Systems Using a Multiphase Flash Algorithm","authors":"Marvin Martins dos Santos, Iuri Soter Viana Segtovich, Ingrid Azevedo de Oliveira, Frederico Wanderley Tavares, Adriana Teixeira, Leandro Saraiva Valim, Antonin Chapoy","doi":"10.1021/acs.iecr.5c02578","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c02578","url":null,"abstract":"Accurate prediction of hydrate formation and dissociation in natural gas systems is essential for multiphase flow applications and carbon capture and storage technologies. This work presents a modified simultaneous flash-with-stability formulation to calculate the gas-phase water content under incipient hydrate conditions. Given <i>P</i>, <i>T</i>, and the dry-gas composition, we determine the water content while enforcing β<sub><i>H</i></sub> = 0. Hydrates are modeled with the van der Waals–Platteeuw framework, while the fluid phase is described using PC-SAFT and Modified Peng–Robinson equations of state. The methodology was validated against literature data and new measurements for systems containing CH<sub>4</sub>, CO<sub>2</sub>, and C<sub>2</sub>H<sub>6</sub>. Results indicate that PC-SAFT provides superior accuracy, particularly in low-moisture regimes. <i>P–T</i> and <i>P–y</i><sub><i>w</i></sub> maps quantify the effects of composition and humidity. By determining the water content at incipient hydrate within a stability-checked flash, our method reduces numerical issues near phase boundaries and provides a practical tool for risk analysis and offshore system design.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"9 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247531","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}
Salvador E. Brandolín, Federico E. Benelli, Ivana Magario, José A. Scilipoti
{"title":"Correction to “Ugropy: An Extensible Python Package for Thermodynamic Model Functional Group Identification via Mathematical Optimization”","authors":"Salvador E. Brandolín, Federico E. Benelli, Ivana Magario, José A. Scilipoti","doi":"10.1021/acs.iecr.5c03949","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c03949","url":null,"abstract":"In our recently published article, we compared different group-contribution fragmentation algorithms. After publication, Dr. Müller contacted us to point out that his algorithm performs significantly better when applied as originally recommended in his paper. Here it is described that sorting the groups prior to fragmentation is necessary for the algorithm to work properly. We are grateful for this clarification and provide below the corrected comparison. If this is taken into account giving the sorted groups (Table 5: Müller (sorted)) as input, the algorithm successfully finds the optimal solutions in all cases with execution times significantly lower than the other two packages. For this use case it must be specified on which specific order the fragments must be searched within the molecule to fragment. On the one hand, this is additional information that is required to understand the correct sorting criteria of each specific fragmentation model, which could be a barrier for new users or developers of new models. On the other hand, it allows for model developers to specify much more precisely which groups are to be prioritized before others. Under this new perspective, the results of the comparison of the three algorithms are summarized in Table 1. The results show that the Müller algorithm with sorted groups substantially improves its performance. When the groups are not sorted, the algorithm fails to find the optimal solution in the majority of the cases and the fragmentation times are slower than if the algorithm is applied as originally intended based on group priorities. Nonoptimal solution. The specific sorting criteria recommended by Müller for the UNIFAC model is the following:<img alt=\"\" src=\"/cms/10.1021/acs.iecr.5c03949/asset/images/medium/ie5c03949_0002.gif\"/> This article has not yet been cited by other publications.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241598","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}
{"title":"Correction to “Pore Size Tailoring of Nickel Porous Hollow Fiber Membrane by Adjusting Redox Conditions”","authors":"Tongling Liu, Zhifei Hu, Jianfeng Sun, Yun Zhang, Mingming Wang, Wei Zhu, Jianguang Li, Zhigang Wang, Xiaoyao Tan","doi":"10.1021/acs.iecr.5c03895","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c03895","url":null,"abstract":"The original publication inadvertently omitted the designation of cofirst authors. The authors Tongling Liu and Zhifei Hu contributed equally to this work and share first authorship. Tongling Liu and Zhifei Hu contributed equally to this work. This article has not yet been cited by other publications.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241597","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}
{"title":"Modified Carbon Fibers with Polyolefins Based on Surface Chain-Transfer Ring-Opening Metathesis Polymerization and Their Reinforced Polypropylene Composites","authors":"Xinting Wu, Baojun Li, Dingfeng Kong, Zhendong Liu, Gangsheng Tong, Xinyuan Zhu","doi":"10.1021/acs.iecr.5c03176","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c03176","url":null,"abstract":"In this paper, polyolefins were grafted to the surface of carbon fibers via surface chain-transfer ring-opening metathesis polymerization (SC-ROMP) to enhance the performance of carbon fiber/polypropylene (CF/PP) composites. The modification of carbon fibers via SC-ROMP was studied first to screen out the proper reaction conditions. The modified carbon fiber was mixed with polypropylene to afford the CF/PP composites. The mechanical properties of the CF/PP composites were then investigated. The morphology and mechanical property studies revealed that the modified carbon fibers afford considerable compatibility with polypropylene, and the composites’ tensile strength, storage modulus, and loss modulus are superior to those using commercial carbon fibers. Compared to the composite using commercial CF, the tensile modulus of the PP composite using polyolefin-grafted CF increased by 13.6%.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"105 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241596","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}
Zhou-Tao Feng, Yuan Ma, Jing-Jing Tian, Hui-Ping Sun, Jin-Ku Liu
{"title":"In Situ Synthesis and Long-Term Corrosion Inhibition Performance of GO-PANI@ZP Composite","authors":"Zhou-Tao Feng, Yuan Ma, Jing-Jing Tian, Hui-Ping Sun, Jin-Ku Liu","doi":"10.1021/acs.iecr.5c03007","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c03007","url":null,"abstract":"This study successfully synthesized a graphene oxide-polyaniline@zinc phosphate (GO-PANI@ZP) composite through in situ polymerization and stepwise ion introduction. Using graphene oxide (GO) as the substrate, the sequential deposition of polyaniline (PANI) and zinc phosphate (ZP) mitigates the hydrophilicity and reduces interlayer agglomeration. The lamellar structure provides a physical barrier that extends corrosive media penetration pathways. PANI contributes redox reversibility to dynamically regulate charge transfer, facilitating the formation of an electrochemical protective layer. Protonated PANI responds to corrosion reactions and releases corrosion inhibitors. Additionally, the composite exhibits a microcapacitor effect, establishing a stable charge barrier at the coating-substrate interface that impedes corrosive species penetration. After 168 h of immersion in 3.5 wt % NaCl solution, the composite coating demonstrated a total impedance value 4.56 times that of epoxy resin, revealing exceptional corrosion resistance. This work provides a novel design strategy for developing organic–inorganic composite anticorrosion materials.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"21 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241594","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}
{"title":"Understanding Olefin Solubility in Polyethylene from a Molecular Dynamics Simulation Perspective","authors":"Sajjad Kavyani, Arash Alizadeh, Joao B. P. Soares","doi":"10.1021/acs.iecr.5c02480","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c02480","url":null,"abstract":"We investigated the sorption mechanisms of ethylene (ETH) and 1-hexene (HEX) in polyethylene (PE) using molecular dynamics (MD) simulations at 80 °C and various pressures. The simulations revealed that ETH molecules can hinder HEX-PE interactions, reducing HEX clustering with PE chains. This may explain the experimentally observed antisolvent effect of ETH on HEX. Conversely, HEX can enhance the sorption of ETH by acting as carriers, facilitating ETH interactions with PE chain ends. This cosolubility effect was captured by introducing a correction term, <i>S</i><sub>indirect</sub>, which accounts for ETH molecules that interact indirectly with PE via HEX. Total ETH solubility is thus expressed as <i>S</i><sub>ETH</sub> = <i>S</i><sub>direct</sub> + γ<i>S</i><sub>indirect</sub>, where <i>S</i><sub>direct</sub> corresponds to ETH directly interacting with PE and γ represents the contribution from ETH molecules interacting simultaneously with HEX and PE. Our findings demonstrate that MD offer powerful insights into the molecular-level mechanisms governing sorption in complex, multicomponent systems, such as those encountered in polyolefin reactors.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"30 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235210","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}
{"title":"Tuning Oxygen Vacancies in Ag/Ceria-Zirconia for Selective Trace Oxygen Removal from Olefin-Rich Streams with High Hydrogen-to-Carbon Ratios","authors":"Yujie Mao, Xiaofei Lu, Weixin Guan, Xian Suo, Lifeng Yang, Xili Cui, Anyun Zhang, Huabin Xing","doi":"10.1021/acs.iecr.5c02736","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c02736","url":null,"abstract":"The selective removal of trace oxygen remains challenging in olefin-rich gas streams with high hydrogen-to-carbon ratios, particularly in the efficient utilization of refinery dry gas (RDG) resources. In this contribution, a highly selective and durable silver-based catalyst supported on ceria–zirconia was rationally designed and synthesized for the selective removal of trace oxygen under olefin-rich conditions with high hydrogen-to-carbon ratios. Among the prepared catalysts, the Ag/Ce<sub>0.75</sub>Zr<sub>0.25</sub>O<sub>2</sub>–CC catalyst synthesized via the complexation–precipitation method selectively reduces oxygen to 0.2 ppm at 150 °C while maintaining a low 1,3-butadiene loss of 4.2% under simulated RDG conditions. Detailed physicochemical characterizations revealed that the catalyst’s outstanding performance is attributed to the highly dispersed Ag species and a moderate concentration of oxygen vacancies, which synergistically promote selective oxygen activation and removal. Furthermore, the balanced oxygen vacancy concentration and weak surface acidity of the support effectively suppress the undesired hydrogenation of 1,3-butadiene. The catalyst also demonstrated long-term stability over 100 h of continuous operation, highlighting its potential for industrial application. These findings offer valuable insights into industrial deoxygenation strategies, particularly for olefin-rich process streams.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"81 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235386","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}
{"title":"Spatially Resolved Reaction Calorimetry and Fouling Monitoring in a Continuous Tubular Emulsion Polymerization Reactor","authors":"Maria Klippert, and , Werner Pauer*, ","doi":"10.1021/acs.iecr.5c02548","DOIUrl":"10.1021/acs.iecr.5c02548","url":null,"abstract":"<p >A modular flow reactor setup for the continuous emulsion copolymerization of vinyl acetate and vinyl-neodecanoate has been fitted with Distributed Optical Fiber Sensors (DOFS) based on Rayleigh backscatter and instream thermocouples. After segmentwise calibration of the DOFS for temperature measurement, they were used as sensors for online thermal analysis in the reactor. Calorimetric analysis and thermal conversion determination were conducted online during the reaction using the DOFS as spatially distributed temperature sensors, which span the length of the reactor. Three DOFS in the reactor wall at different diameters enable the quantitative calculation of the thermal energy transferred between the DOFS and therefore determine the heat transport through the reactor wall. In experiments with heated water, the radial heat loss for reference values from 2 to 9 W could be determined with an accuracy of 0.39 W. The sensor-equipped tubular reactor (length 1.95 m) was used for the emulsion copolymerization of vinyl acetate and vinyl-neodecanoate with a redox-initiator reactive at room temperature (RT). The quick and intense fouling process of the reaction could be reflected in the thermal measurements. From the immediate shifting of the reaction hotspot (length of highest monomer conversion) downstream, it could be deduced that the chosen reaction does not have an induction period pertaining to fouling. The broadness of the hotspot and the maximum hotspot temperature <i>T</i><sub>max</sub> could be monitored during the reaction. Due to the fouling constricting available reactor volume at constant feed rate, the hotspot became broader with time and <i>T</i><sub>max</sub> dropped. The drop of <i>T</i><sub>max</sub> could be tracked especially well with the DOFS in the wall, in comparison to the thermocouples instream, and it is deduced to be a useful parameter for fouling monitoring. The heat released from the reaction was calculated using the thermocouples instream for axially transported heat and the DOFS for radially transported heat. It could be seen clearly that during the times <i>T</i><sub>max</sub> was not aligned with one of the six thermocouples, the axial heat was estimated as too low. The radial heat measurement had a high spatial resolution of the DOFS (0.26 cm) and always captured <i>T</i><sub>max</sub>. During good alignment of <i>T</i><sub>max</sub> and one of the six thermocouples, the calculated total reaction heat was 35.3 W or a 79 ±3% monomer conversion. This correlates well with the gravimetrical conversion measurement, averaging 78 ±2% conversion for that time frame in the range of 8–16 dimensionless residence times.</p>","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"64 41","pages":"19817–19830"},"PeriodicalIF":3.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.iecr.5c02548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235384","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}
{"title":"Mastering Rheology: A Strategic and Practical Guide for Empowering All Users","authors":"Khushboo Suman","doi":"10.1021/acs.iecr.5c03263","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c03263","url":null,"abstract":"Rheology, the study of flow, plays a vital role in diverse industries such as pharmaceuticals, cosmetics, and food. In this work, we provide a comprehensive introduction to fundamental rheological experiments and offer a strategic approach towards understanding the rheological behavior of any soft condensed material. We emphasize the importance of design of a good rheological experiment, input parameter, and analysis of the obtained output parameter. Through the standard design of the experiment and systematic conduction of rheological experiments, we can estimate a broad range of rheological parameters such as viscosity, modulus, stability, yield stress, and nonlinear behavior of the material. Furthermore, we also discuss methods for detecting and good practices for reducing some of the common experimental errors that may arise. We also present a comprehensive range of advanced rheological characterization techniques that can be pursued to gain deeper insights into the mechanical and structural evolution of soft materials. Through this work, we attempt to make rheology more accessible to researchers from various domains to incorporate rheology into their characterization studies and enable them to confidently navigate rheological studies and contribute to material development.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"20 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235350","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}