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Screening Procedures for Self-Reactive Substances, Differential Scanning Calorimetry-Onset and Heat-Flux Criteria 自反应物质的筛选程序，差示扫描量热法开始和热通量标准
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-03-04 DOI: 10.1002/ceat.12006
Dr. Markus Gödde, Jörg Clemens, Dr. Marcus Malow
{"title":"Screening Procedures for Self-Reactive Substances, Differential Scanning Calorimetry-Onset and Heat-Flux Criteria","authors":"Dr. Markus Gödde,&nbsp;Jörg Clemens,&nbsp;Dr. Marcus Malow","doi":"10.1002/ceat.12006","DOIUrl":"https://doi.org/10.1002/ceat.12006","url":null,"abstract":"<p>We present a new screening procedure for the determination of the thermal stability of potential candidates for the class of self-reactive substances. For the classification of self-reactive substances, elaborate testing is necessary to determine the applicable type, according to the regulations. Annex 6 of the UN Manual of Tests and Criteria permits that the classification procedure for self-reactive substances may be omitted, if the estimated self accelerating decomposition temperature (SADT) is greater than 75 °C for a 50 kg package using an appropriate calorimetric technique, but no technique is described. Based on stationary theories of thermal explosion, we developed a screening approach using differential scanning calorimetry (DSC) onset and heat-flux criteria, respectively, at relevant temperatures. The proposed approach is validated with experimental data.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698754","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
Synthesis of HZSM-5 from Montmorillonite for H2 Production via Steam Reforming of Dimethyl Ether 用蒙脱土合成二甲醚蒸汽重整制氢用HZSM-5
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-03-04 DOI: 10.1002/ceat.12008
Jia-Kang Zhang, Huan Wang, Shuang Wang, Xiao-Qian Feng, Sen-Han Zhang, Yong-Hua Zhao
{"title":"Synthesis of HZSM-5 from Montmorillonite for H2 Production via Steam Reforming of Dimethyl Ether","authors":"Jia-Kang Zhang,&nbsp;Huan Wang,&nbsp;Shuang Wang,&nbsp;Xiao-Qian Feng,&nbsp;Sen-Han Zhang,&nbsp;Yong-Hua Zhao","doi":"10.1002/ceat.12008","DOIUrl":"https://doi.org/10.1002/ceat.12008","url":null,"abstract":"<p>A series of HZSM-5 with different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio was synthesized successfully using montmorillonite treated by submolten salt activation technique as a raw material. Meanwhile, HZSM-5, employed as a solid acid catalyst, was blended with the commercial Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst to form a bifunctional catalyst for the steam reforming of dimethyl ether (SRD) process. The results showed that the acidity and structural characteristics of HZSM-5 could be effectively regulated by adjusting the SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio, and then affecting the SRD performance of the corresponding bifunctional catalyst. Among them, the bifunctional catalyst comprising HZSM-5 (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 42) and Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> presented the highest activity for the SRD performance, in which the dimethyl ether conversion and hydrogen yield could reach 94% and 85% at TOS of 12 h under the condition of reaction temperature of 300 °C, pressure of 0.1 MPa, space velocity of 5000 mL/(g·h), respectively.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698753","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
Mechanochemical Activation of Argon Oxygen Decarburization Slags for Improved Mineral Carbonation 氩氧脱碳渣的机械化学活化改善矿物碳酸化
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-28 DOI: 10.1002/ceat.12004
Luka Ceyssens, Nina Miladinović, Giuseppe Granata, Tom Van Gerven
{"title":"Mechanochemical Activation of Argon Oxygen Decarburization Slags for Improved Mineral Carbonation","authors":"Luka Ceyssens,&nbsp;Nina Miladinović,&nbsp;Giuseppe Granata,&nbsp;Tom Van Gerven","doi":"10.1002/ceat.12004","DOIUrl":"https://doi.org/10.1002/ceat.12004","url":null,"abstract":"<p>Inspired by the growing need for carbon mitigation strategies, this work investigates mechanochemical activation of argon oxygen decarburization (AOD) slag for CO<sub>2</sub> sequestration. It explores three process modes: concurrent, sequential, and staged planetary ball milling and carbonation. Results showed carbonation uptake reached 70 % of the theoretical maximum with ball milling (0.39 g CO<sub>2</sub>/g AOD slag) versus 0.17 g CO<sub>2</sub>/g AOD slag without ball milling. The concurrent process resulted in the fastest rate and uptake. Particle agglomeration was confirmed via particle size analysis and electron microscopy, and non-reactive mineral phases were identified through quantitative X-ray diffraction, explaining incomplete carbonation conversion.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861953","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
Recast Solubility Models for Correlating Solubility of Solid Drugs in Supercritical Carbon Dioxide 固体药物在超临界二氧化碳中的溶解度关系的重塑溶解度模型
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-27 DOI: 10.1002/ceat.12003
Raghavan Amrithaa, Vikram Ramalingam, Chandrasekhar Garlapati
{"title":"Recast Solubility Models for Correlating Solubility of Solid Drugs in Supercritical Carbon Dioxide","authors":"Raghavan Amrithaa,&nbsp;Vikram Ramalingam,&nbsp;Chandrasekhar Garlapati","doi":"10.1002/ceat.12003","DOIUrl":"https://doi.org/10.1002/ceat.12003","url":null,"abstract":"<p>Solubilities of solid drugs in supercritical fluids were well represented by density models and mathematical models. In literature, several solubility models were reported, and some of them were observed to be redundant according to Gibbs phase rule. Therefore, the present work is aimed to address the redundant nature of the solubility models by recasting the existing solubility models with the help of the equation of state (EoS). Solubility models proposed by Adachi–Lu, Garlapati–Madras, Keshmiri et al., Si-Moussa et al., Belghait et al., Sodeifian et al. model 1, and Sodeifian et al. model 2 were considered for the study. Existing and recast versions of solubility models were evaluated with literature reported 20 drug compound's solubility data in supercritical carbon dioxide.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698927","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
Reaction Equilibria in the Hydrogen Loading and Release of the LOHC System Benzyltoluene/Perhydro Benzyltoluene 苯基甲苯/过氢苯基甲苯LOHC体系氢气装载与释放的反应平衡
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-21 DOI: 10.1002/ceat.12002
Barbara Bong, Dr. Wassja A. Kopp, Thomas Nevolianis, Dr. Chalachew Mebrahtu, Prof. Dr. Kai Leonhard, Prof. Dr. Regina Palkovits
{"title":"Reaction Equilibria in the Hydrogen Loading and Release of the LOHC System Benzyltoluene/Perhydro Benzyltoluene","authors":"Barbara Bong,&nbsp;Dr. Wassja A. Kopp,&nbsp;Thomas Nevolianis,&nbsp;Dr. Chalachew Mebrahtu,&nbsp;Prof. Dr. Kai Leonhard,&nbsp;Prof. Dr. Regina Palkovits","doi":"10.1002/ceat.12002","DOIUrl":"https://doi.org/10.1002/ceat.12002","url":null,"abstract":"<p>Liquid organic hydrogen carriers (LOHCs) can store and transport hydrogen by chemical bonding. Benzyltoluene (H0-BT) is an attractive LOHC that can take up 12 H per carrier molecule. The chemical equilibrium favors hydrogenation at lower temperatures and higher pressures. In this work, we study hydrogenation kinetics at 125–200 °C and 0.3–30 bar H<sub>2</sub>. We perform ab initio calculations of all isomers of H0-BT and its (partially) hydrogenated forms to compute chemical equilibrium compositions. Despite hydrogenation being exothermic, full hydrogenation is thermodynamically possible almost up to the boiling temperature of the LOHC. Based on the obtained results, the tradeoff between the degree of hydrogenation and reducing the operating temperature is discussed.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceat.12002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698993","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}
引用次数: 0
Overview Contents: Chem. Eng. Technol. 2/2025 内容：化学。Eng。抛光工艺。2/2025
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-18 DOI: 10.1002/ceat.2025470203
{"title":"Overview Contents: Chem. Eng. Technol. 2/2025","authors":"","doi":"10.1002/ceat.2025470203","DOIUrl":"https://doi.org/10.1002/ceat.2025470203","url":null,"abstract":"","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceat.2025470203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431556","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}
引用次数: 0
Editorial Board: Chem. Eng. Technol. 2/2025 编委会：化学。Eng。抛光工艺。2/2025
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-18 DOI: 10.1002/ceat.2025470202
{"title":"Editorial Board: Chem. Eng. Technol. 2/2025","authors":"","doi":"10.1002/ceat.2025470202","DOIUrl":"https://doi.org/10.1002/ceat.2025470202","url":null,"abstract":"","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceat.2025470202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431759","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}
引用次数: 0
Cover Picture: Chem. Eng. Technol. 2/2025 封面图片：化学。Eng。抛光工艺。2/2025
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-18 DOI: 10.1002/ceat.2025470201
{"title":"Cover Picture: Chem. Eng. Technol. 2/2025","authors":"","doi":"10.1002/ceat.2025470201","DOIUrl":"https://doi.org/10.1002/ceat.2025470201","url":null,"abstract":"<p>© leungchopan@AdobeStock\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceat.2025470201","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431758","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}
引用次数: 0
Determination of the Lyapunov Exponent of Chemical Reactors From One Measurement Series 用一个测量系列测定化学反应器的李雅普诺夫指数
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-02-03 DOI: 10.1002/ceat.12001
Marek Berezowski
{"title":"Determination of the Lyapunov Exponent of Chemical Reactors From One Measurement Series","authors":"Marek Berezowski","doi":"10.1002/ceat.12001","DOIUrl":"https://doi.org/10.1002/ceat.12001","url":null,"abstract":"<p>This paper presents a method for determining the Lyapunov exponent without knowing the mathematical model of the object being studied and based on a single measurement series. This method allows for effective analysis of dynamic systems with a high degree of complexity. The studies were carried out on a model of coupled tubular chemical reactors described by four partial differential equations.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698856","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
Numerical Study on the Intensification of 3D Fluidized Bed Flue Gas Desulfurization Process by Multi-Jet Structure 多喷嘴结构强化三维流化床烟气脱硫工艺的数值研究
IF 1.8 4区 工程技术
Chemical Engineering & Technology Pub Date : 2025-01-23 DOI: 10.1002/ceat.202400247
Huimin Yang, Shuai Wang, Shengxiao Wu, Jiao Jin, Feng Wu
{"title":"Numerical Study on the Intensification of 3D Fluidized Bed Flue Gas Desulfurization Process by Multi-Jet Structure","authors":"Huimin Yang,&nbsp;Shuai Wang,&nbsp;Shengxiao Wu,&nbsp;Jiao Jin,&nbsp;Feng Wu","doi":"10.1002/ceat.202400247","DOIUrl":"https://doi.org/10.1002/ceat.202400247","url":null,"abstract":"<p>There are problems such as short residence time, high particle packing density, and insufficient interphase contact in traditional fluidized beds (FBs), which greatly reduce the efficiency of the reactor. Based on this issue, this article simulates and analyzes the flow field characteristics in a 3D FB with different inlet angles (45°, 90°, 102.5°). The results show that in an FB with an inlet angle of 90°, the radial distribution of particles is uniform, and the best interphase mixing effect is achieved. On the basis of the traditional FB, a 3D multi-jet FB (MJFB) structure was designed to study the semi-dry flue gas desulfurization process. The results show that the multi-jet structure enhances the turbulence of gas and the radial pulsation of gas–liquid–solid three-phase, improving the phenomenon of uneven radial distribution of solid particles. In addition, the heat transfer coefficient between the phases has been improved. Compared with FB, the moisture content of MJFB outlet flue gas increased by 33.69 %, and the multi-jet structure reduced the sulfur content of outlet flue gas, which helps to improve desulfurization efficiency.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431428","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
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