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1.217 Aktuelle Fachpublikationen zum Thema temperature

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Preparation of highly active nickel catalysts supported on mesoporous nanocrystalline γ‐Al2O3 for Methane Autothermal Reforming

25.06.2015 | Soodeh Sepehri, Mehran Rezaei, Chemical Engineering & Technology, 2015

Abstract Autothermal reforming of methane (ATR) was carried out over nanocrystalline Al2O3 supported Ni catalysts with various Ni loadings. Mesoporous nanocrystalline γ‐Al2O3 powder with high specific surface area was prepared by sol‐gel method and employed as support for nickel catalysts. The ...

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Development of an extrusion die with rollers for foaming polymers

22.06.2015 | Boris V. Kichatov, Alexey M. Korshunov, Polymer Engineering and Science, 2015

Ideas concerning the use of a flat slot die with rollers in the technology of extrusion foaming of polymers are developed. Based on the experimental study of low‐density polyethylene foaming with isobutane, dependences of the cell density and foam density on the polymer solution viscosity, gap ...

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Insert injection molding of high‐density polyethylene single‐polymer composites

22.06.2015 | Qianchao Mao, Tom P. Wyatt, Jinnan Chen, Jian Wang, Polymer Engineering and Science, 2015

A process for making high‐density polyethylene (HDPE) single‐polymer composites (SPCs) by insert injection molding was investigated. HDPE SPCs with relatively good tensile and interfacial properties were prepared within a short cycle time within a temperature range of 40°C. Melt‐spun HDPE fibers ...

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Biodiesel production using CaO/γ‐Al2O3 catalyst synthesized by sol‐gel method

17.06.2015 | Gholamreza R. Moradi, Majid Mohadesi, Raziye Rezaei, The Canadian Journal of Chemical Engineering, 2015

Abstract In this study, 40% CaO/γ‐Al2O3 catalyst was used for biodiesel production from corn oil. A transesterification reaction was done for 5 h at a temperature of 65 °C in the presence of corn oil, methanol (methanol to oil molar ratio of 12:1), and CaO/γ‐Al2O3 catalyst (0.06 g/g (6 wt%)). ...

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Optimization of styrene acrylonitrile random bulk copolymerization reactors

12.06.2015 | Rajeshwar Mahajan, Santosh K. Gupta, Polymer Engineering and Science, 2015

Bulk polymerization of random styrene‐acrylonitrile (SAN) copolymer using AIBN initiator, in nonisothermal batch reactors is optimized using single and multiple objective functions. The objectives are selected from among: minimization of the reaction time, maximization of the overall monomer ...

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A comprehensive CFD study of droplet‐film impaction and heat transfer

11.06.2015 | Fan Jiang, Yijun Wang, Jianhua Xiang, Zhenzhang Liu, Chemical Engineering & Technology, 2015

Abstract The Eularian multi‐phase model and continuum surface force (CSF) are employed to simulate the liquid droplet impinging onto a solid wall with a pre‐existing thin film of the same liquid. The comparison of the numerical results with the experimental results reported in the literatures ...

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A Novel Heterogeneous Catalyst of Mixed K Compounds/ Ca‐Al‐GO and Its Catalytic Application for Transesterification of Soybean Oil to Biodiesel

10.06.2015 | Chuanjia Sun, Fengxian Qiu, Dongya Yang, Bin Ye, Chemical Engineering & Technology, 2015

Abstract A novel heterogeneous solid base catalyst was prepared by Ca‐Al‐graphite oxide loaded with mixed potassium salts and applied in the transesterification of soybean oil with methanol to produce biodiesel. The catalysts were characterized by Hammett indicators, XRD, FT‐IR, SEM, EDX and ...

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Mass Transfer Evolution in a Reactive Spray during Carbon Dioxide Capture

10.06.2015 | Maria Ouboukhlik, Gilles Godard, Sawitree Saengkaew, Marie‐Christine Fournier‐Salaün, Lionel Estel, Gérard Grehan, Chemical Engineering & Technology, 2015

Abstract In view of global warming, improvement of CO2 capture efficiency in addition to carbon valorization has become a major concern. In the last decade, post‐combustion capture using amines evolved as one of the most mature technologies for industrial applications. The understanding of ...

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A Microwave‐assisted Continuous Flow Reactor Based on Ridged Waveguide

10.06.2015 | Peiping Zhou, Xiaoqing Yang, Kama Huang, Guozhu Jia, Chemical Engineering & Technology, 2015

Abstract Microwave‐assisted continuous flow reactor (MCFR) has received increasing attention in recent years as a valuable alternative to the use of conventional reactor for accelerating chemical reactions. However, despite several interesting applications have been now reported, relatively ...

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Catalytic pyrolysis of low rank Canadian boundary dam coal over ZSM‐5 and LTL zeolites

10.06.2015 | Kavan Motazedi, Davood Karami, Nader Mahinpey, The Canadian Journal of Chemical Engineering, 2015

Abstract The catalytic pyrolysis of low‐rank coal (boundary dam lignite coal) for production of valuable chemical compounds, such as aromatics, over zeolites has been investigated with promising results. In this study, primarily zeolites ZSM‐5 (zeolite socony mobil‐5) and LTL (Linde type L) ...

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