Canadian Journal of Chemical Engineering最新文献

{"title":"Issue Highlights","authors":"","doi":"10.1002/cjce.25339","DOIUrl":"https://doi.org/10.1002/cjce.25339","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 11","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284612","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":"A new green synthesis approach using sodium palmitate in the synthesis of a Ni/Al2O3 catalyst for CO2 methanation","authors":"Anderson F. C. Silva, Eduardo L. de Barros Neto, Bruna R. de Vasconcelos","doi":"10.1002/cjce.70078","DOIUrl":"https://doi.org/10.1002/cjce.70078","url":null,"abstract":"<p>CO<sub>2</sub> methanation with Ni/Al<sub>2</sub>O<sub>3</sub> catalysts is a key technology for converting CO<sub>2</sub> emissions into sustainable methane. However, conventional impregnation synthesis often results in poor nickel dispersion and in the emission of gaseous NO<sub>x</sub> species. Thus, for the first time, sodium palmitate flocculant properties were used to isolate nickel nanoparticles and disperse them over an Al<sub>2</sub>O<sub>3</sub> support. Ni/Al<sub>2</sub>O<sub>3</sub> catalysts were synthesized by mechanochemical and wet impregnation methods (MI and WI, respectively) to evaluate the impact of the synthesis route on the catalytic performance. Nickel nanoparticles with 9.7–12.6 nm were produced. Influences of temperature (300–500°C) and gas hourly space velocity (GHSV, 2490–14,920 h<sup>−1</sup>) were evaluated, and a stability study was performed. Best performances were reached at 400°C and the lowest GHSV (2490 h<sup>−1</sup>). Ni/Al<sub>2</sub>O<sub>3</sub>-WI catalyst showed a slightly better performance in terms of CO<sub>2</sub> and H<sub>2</sub> conversion (<span></span><math>\u0000 <mrow>\u0000 <msub>\u0000 <mi>X</mi>\u0000 <msub>\u0000 <mi>CO</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>79</mn>\u0000 <mo>%</mo>\u0000 </mrow></math>, <span></span><math>\u0000 <mrow>\u0000 <msub>\u0000 <mi>X</mi>\u0000 <msub>\u0000 <mi>H</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>77</mn>\u0000 <mo>%</mo>\u0000 </mrow></math>), when compared to Ni/Al<sub>2</sub>O<sub>3</sub>-MI (<span></span><math>\u0000 <mrow>\u0000 <msub>\u0000 <mi>X</mi>\u0000 <msub>\u0000 <mi>CO</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>77</mn>\u0000 <mo>%</mo>\u0000 </mrow></math>, <span></span><math>\u0000 <mrow>\u0000 <msub>\u0000 <mi>X</mi>\u0000 <msub>\u0000 <mi>H</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>76</mn>\u0000 <mo>%</mo>\u0000 </mrow></math>). In addition, CH<sub>4</sub> selectivity was kept stable at >99% for all studies. The stability test showed that Ni/Al<sub>2</sub>O<sub>3</sub>-WI had a stable performance during the 50 h. These results indicate that this synthesis approach is a viable method for producing catalysts with strong activity and reduced environmental impact. Furthermor","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 11","pages":"5173-5188"},"PeriodicalIF":1.9,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.70078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284621","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":"Preface to the Catalysis for Decarbonization Special Issue Section","authors":"Clémence Fauteux-Lefebvre, Bruna Rego de Vasconcelos, Ying Zheng","doi":"10.1002/cjce.70089","DOIUrl":"https://doi.org/10.1002/cjce.70089","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 11","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284873","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":"Optimization of lipolysis variables of tengkawang seed fat (illipe butter) using frangipani resin derived lipase","authors":"Fikra Hanifah,&nbsp;Astri Nur Istyami,&nbsp;Meiti Pratiwi,&nbsp;Dwi Hantoko,&nbsp;Tirto Prakoso","doi":"10.1002/cjce.70074","DOIUrl":"https://doi.org/10.1002/cjce.70074","url":null,"abstract":"<p>This study aimed to determine the optimum conditions for the lipolysis of tengkawang fat using lipase derived from frangipani resin to produce free fatty acids, which, particularly stearic acid, serve as key intermediates in various industrial applications. A 2^(4–1) fractional factorial design was used to screen the effects of pH, temperature, enzyme concentration, and buffer-to-fat ratio on the degree of lipolysis. The 5-h reaction yielded a reaction mass of 43.35% of free fatty acids. ANOVA results revealed that pH, enzyme concentration, and their interaction were significant, with curvature present at the centre point. Optimization was then conducted using response surface methodology (RSM) with a face-centred central composite design (FCCCD). The highest degree of lipolysis achieved was 89.54% under the conditions of pH 7, temperature 27°C, enzyme concentration 10%, and a buffer-to-fat ratio of 2:1. Time profile observations showed that the lipolysis reaction proceeded slowly, reaching 89.53% at the end of 24 h.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 11","pages":"5189-5202"},"PeriodicalIF":1.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284784","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":"Issue Highlights","authors":"","doi":"10.1002/cjce.25337","DOIUrl":"https://doi.org/10.1002/cjce.25337","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037822","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":"Issue Highlights","authors":"","doi":"10.1002/cjce.25335","DOIUrl":"https://doi.org/10.1002/cjce.25335","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 9","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767441","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":"A systematic approach for identifying drivers of critical safety and establishing their hierarchy","authors":"Mohammad Zaid Kamil,&nbsp;Faisal Khan,&nbsp;Paul Amyotte","doi":"10.1002/cjce.70029","DOIUrl":"https://doi.org/10.1002/cjce.70029","url":null,"abstract":"<p>Learning from incidents is a crucial step in preventing and mitigating adverse events. Incident databases offer valuable insights for safety management improvements by cause and contributing factors. However, extracting meaningful information from incident investigation reports poses a significant challenge. This study introduces a data-driven methodology to assess drivers of critical safety (DCS), which is essential for enhancing the safety of the process industries and protecting workers and the environment. Natural language processing (NLP) can offer automated, actionable insights from incident investigation reports. This automation is important in identifying DCS from incident reports to ensure proactive prevention and effective mitigation of risks, thereby protecting assets, workers, and the environment. Based on lagging safety indicators (causes or contributing factors), we aim to develop leading safety improvements to enhance the safety management system. A crucial step involves developing a DCS hierarchy to assess their role within the overall safety management framework. This hierarchy quantifies the driving and dependence power of each driver. The former refers to the number of drivers affected by each driver, while the latter determines the number of drivers impacted by each driver. This hierarchy facilitates resource allocation and determines each driver's effectiveness in safety management. The tool is developed and trained using the publicly available CSB database, a comprehensive source of incident investigation data. To further verify the model's effectiveness, it is tested and verified on an unseen database of 26 release incidents released by CSB in January 2025. The model successfully identifies the DCS responsible for each incident.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 10","pages":"4628-4646"},"PeriodicalIF":1.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.70029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038092","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":"Issue Highlights","authors":"","doi":"10.1002/cjce.25333","DOIUrl":"https://doi.org/10.1002/cjce.25333","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 8","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551219","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":"Issue Highlights","authors":"","doi":"10.1002/cjce.25331","DOIUrl":"https://doi.org/10.1002/cjce.25331","url":null,"abstract":"","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 7","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190912","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":"Human flaws and logical tools in engineering","authors":"André C. R. Martins","doi":"10.1002/cjce.25764","DOIUrl":"https://doi.org/10.1002/cjce.25764","url":null,"abstract":"<p>This paper explores the limitations of human cognition, especially in engineering research, emphasizing the need for mathematical models and methods to guide decision-making and theory validation. While human cognition excels in certain tasks, it is prone to biases that can distort our understanding. Applications of complex systems to engineering are often approximations of reality rather than exact truths. The concept of emergence is examined to illustrate how macroscopic behaviours in systems may not be easily reducible to their microscopic components, highlighting the importance of both reductionist and holistic approaches. The trade-offs between simple and complex models in solving real-world problems are discussed in the context of the limitations of models in capturing the full complexity of the real systems.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 8","pages":"3512-3520"},"PeriodicalIF":1.6,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjce.25764","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551284","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}