Canadian Journal of Chemical Engineering最新文献

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IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-12-04 DOI: 10.1002/cjce.25319

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IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-11-06 DOI: 10.1002/cjce.25003

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IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-10-06 DOI: 10.1002/cjce.25001

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Identifying design criteria for implementing inherent safety in chemical process industries part 2: Design mechanism

IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-09-23 DOI: 10.1002/cjce.25497

Zafirah Zakaria, Kamarizan Kidam, Mimi H. Hassim

{"title":"Identifying design criteria for implementing inherent safety in chemical process industries part 2: Design mechanism","authors":"Zafirah Zakaria, Kamarizan Kidam, Mimi H. Hassim","doi":"10.1002/cjce.25497","DOIUrl":"https://doi.org/10.1002/cjce.25497","url":null,"abstract":"Inherent safety concepts are common knowledge today, but accidents with similar characteristics do recur. Research on accident causes found that design errors, especially equipment failure, contribute the highest percentage of accidents. The development of inherent safety tools has been increasing at a positive pace, but only a small number of these tools are applicable to equipment design. Ample amounts of inherent safety tools are only suitable to be used at the early design stage. This amplifies the fact that inherent safety tools are still conceptual (e.g., change process routes, change safer materials). This is in contrast to the circumstances, where tools are expected to reinforce the inherent safety of equipment. The objective of this research is to identify design mechanism that can help trigger design thinking for implementation of inherent safety in the chemical process industry. To identify such a design mechanism, 526 cases were collected, and knowledge of the mechanism was extracted from design changes and presented in this research paper. The mechanisms were classified according to equipment and inherent safety keywords. The significant design mechanisms from the overall summation were listed (turbulence, change heat transfer fluid, continuous removal, large surface area, corrosion resistance, seamless joint, thin film, dividing wall, on demand, and double wall).","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 1","pages":"63-81"},"PeriodicalIF":1.6,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862210","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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Special issue section on process system safety and risk engineering 关于工艺系统安全和风险工程的特刊部分

IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-09-18 DOI: 10.1002/cjce.25499

Abdallah S. Berrouk, K. Nandakumar

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Effect of pre-aging intermediate layers on the performance of multi-layer organic photovoltaic devices 预老化中间层对多层有机光伏器件性能的影响

IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-09-09 DOI: 10.1002/cjce.25487

Emma Su, Adam R. Tetreault, Lili Zheng, Marzieh Riahinezhad, Itzel Lopez-Carreon, Elnaz Esmizadeh, Peter Collins, Timothy P. Bender

{"title":"Effect of pre-aging intermediate layers on the performance of multi-layer organic photovoltaic devices","authors":"Emma Su, Adam R. Tetreault, Lili Zheng, Marzieh Riahinezhad, Itzel Lopez-Carreon, Elnaz Esmizadeh, Peter Collins, Timothy P. Bender","doi":"10.1002/cjce.25487","DOIUrl":"10.1002/cjce.25487","url":null,"abstract":"Understanding the degradation behaviour of organic photovoltaic (OPV) devices is an essential part to improve their stability prior to massive production. Accelerated aging can help to assess their stability and study the underlying degradation mechanisms of OPVs. Most studies focus on individual layers or a full device, and little is known about the role a pre-aged layer stack plays in the performance of a device. Herein, we report the investigation of the effects of pre-aging of multiple layers on the performance of OPVs. Instead of aging a single layer or an entire stack (sequential layers: ITO/PEDOT:PSS/MoOx/F-BsubPc/C60/BCP/Ag), our process involved aging the intermediate layer stack for 24 h after depositing a specific layer before continuing with the subsequent depositions to fully fabricate/manufacture OPVs. Aging was conducted under four controlled conditions considering parameters including moisture, gas type, and temperature in the absence of light according to the International Summit on Organic Photovoltaic Stability (ISOS) protocols. Short of PEDOT:PSS we found that multiple layers, being subjected to the parameters, resulted in a decline in OPV device performance after being fully manufactured. Device performance is evaluated based on short-circuit current density (Jsc), power conversion efficiency (PCE), and open-circuit voltage (Voc). Our analysis provides insight into the degradation mechanisms of layered/planar OPV structures and offers strategic guidance for optimizing fabrication processes, particularly during the layer deposition transitions. We recommend that during OPV vacuum deposited fabrication, intermediate layers should be protected from moisture, O2, high temperature, and even inert gases, preferably in a low-vacuum environment.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"102 12","pages":"4106-4119"},"PeriodicalIF":1.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195237","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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IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-09-06 DOI: 10.1002/cjce.24999

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Understanding the effect of reaction parameters on the production of levulinic acid from glucose 了解反应参数对从葡萄糖生产乙酰丙酸的影响

IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-08-28 DOI: 10.1002/cjce.25470

Ketaki S. Nalawade, Parag R. Gogate

{"title":"Understanding the effect of reaction parameters on the production of levulinic acid from glucose","authors":"Ketaki S. Nalawade, Parag R. Gogate","doi":"10.1002/cjce.25470","DOIUrl":"10.1002/cjce.25470","url":null,"abstract":"A significant and sustainable feedstock for many value added products is levulinic acid, which is basically a short-chain fatty acid. The current study aims to comprehend how multiple factors affect the hydrothermal reactions that convert glucose to levulinic acid. Glucose can be readily obtained from lignocellulosic biomass and hence it is selected in the work as representative sustainable source. The effect of various operating parameters, including time (0–180 min), temperature (140–180°C), nitrogen pressure (0–25 bar), glucose concentration (3%–10%), agitation speed (100–300 RPM), and acid concentration (2%–6%); use of different salts (NaCl, AlCl3 6H2O, FeCl3); and different acids (HCl, H3PO4, H2SO4) on the reaction progress has been studied in a batch autoclave reactor. It was elucidated that pressure (only nitrogen purge was essential for reaction progress) or salt content changes did not affect sugar conversion significantly. The process was seriously influenced by the presence of acids, mostly in the form of homogeneous catalysts, and the most significant results were obtained for H2SO4. The highest levulinic acid yield (39.7 g/g) at 90 min, with nearly complete sugar conversion, was obtained under the ideal conditions of 160°C, 5% sugar loading, and 5% H2SO4 concentration. The current study indicates that the two primary operating parameters in this conversion process are temperature and time, with higher temperature and lower sugar concentration showing a rising tendency in sugar conversion. Overall, the study establishes a sustainable process for levulinic acid synthesis.","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"102 11","pages":"3713-3722"},"PeriodicalIF":1.6,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195263","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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Preface to the Organic and Printed Electronics Special Issue Section 有机和印刷电子特刊》序言

IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-08-28 DOI: 10.1002/cjce.25473

Benoît H. Lessard

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Preface to the special issue of the International Conference on Sustainable Development in Chemical and Environmental Engineering (SDCEE-2024) 化学与环境工程可持续发展国际会议（SDCEE-2024）特刊序言

IF 1.6 4区工程技术

Canadian Journal of Chemical Engineering Pub Date : 2024-08-28 DOI: 10.1002/cjce.25474

Avinash Chandra

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