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1.338 Aktuelle Fachpublikationen zum Thema temperature

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Developing a mathematical model for the oxidative dehydrogenation of propane in a fluidized bed reactor

05.02.2016 | Ali Torabi, Mohammad Kazemeini, Moslem Fattahi, Asia-Pacific Journal of Chemical Engineering, 2016

Abstract In this research, a mathematical model to simulate a two‐phase fluidized bed reactor for oxidative dehydrogenation of propane to propylene was developed. The developed model was solved numerically using the matlab software. Moreover, effects of the reaction temperature, operating ...

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Adsorption of nickel ions on oxygen functionalized carbons

03.02.2016 | A.M. Kern, B. Zierath, T. Fey, B.J.M. Etzold, Chemical Engineering & Technology, 2016

Abstract The adsorption of nickel(II) ions on pristine and wet chemically oxidized microporous carbons is studied. The nature and acidity of the resulting oxygen functional groups are characterized by temperature programmed desorption and point of zero charge measurements. The maximal nickel ...

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Effects of air distribution on furnace temperature and CO/NO/N2O/SO2 emissions in a lab‐scale CFB furnace cofiring both biomass/coal and petroleum coke/coal

02.02.2016 | Yufeng Wang, Yanqing Niu, Peng Sun, Shi'en Hui, Ruiwei Liu, Zhizhou Wang, Xiaolu Zhang, Asia-Pacific Journal of Chemical Engineering, 2016

Abstract The effects of air distribution (excess ratio of primary air, ERPA; excess ratio of secondary air, ERSA; and excess ratio of total air, ERTA) on furnace temperature and CO/NO/N2O/SO2 emissions were systematically studied in a 0.2 MW lab‐scale circulating fluidized bed (CFB) furnace ...

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Partial Blockage of the reversible solid‐solid transition of strontium succinate

29.01.2016 | Nicolas Couvrat, Damien Martins, Anaïs Lafontaine, Morgane Sanselme, Valérie Dupray, Pascal Taulelle, Jean‐Michel Le ..., Chemical Engineering & Technology, 2016

Abstract Strontium succinate, an Active Pharmaceutical Ingredient against osteoporosis, exhibits two polymorphs related by a reversible order‐disorder transformation at circa 50°C. However, during the industrial crystallization process, the transition from the high temperature (HT) form ...

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Waste lard methanolysis catalyzed by potassium hydroxide at moderate temperatures

29.01.2016 | Ivan J. Stojković, Ivana B. Banković‐Ilić, Ana V. Veličković, Jelena M. Avramović, Olivera S. Stamenković, Dragan S. ..., Chemical Engineering & Technology, 2016

Abstract The KOH‐catalyzed methanolysis of waste lard from piglet roasting was studied at a moderate temperature range (40‐60 oC) in order to establish the reaction kinetics. For comparison, lard and thermally treated lard were also included in the study. All three reactions occurred via a ...

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CO2 capture performance of calcium‐based sorbents in the presence of SO2 under pressurized carbonation

29.01.2016 | Huichao Chen, Changsui Zhao, Chemical Engineering & Technology, 2016

Abstract The study focuses on understanding the effect of SO2 on CO2 capture performance under pressurized carbonation condition. Tests by orthogonal design were carried out in a calcination / pressurized carbonation reactor system, investigating the effects of variables such as carbonation ...

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Swelling behavior of coal in solvent at elevated temperature and pressure and non‐isothermal kinetic analysis

29.01.2016 | Lei Chen, Longtao Zhao, Yi. Cao, Yanxun Li, Hekun Lv, Hao Zhang, Asia-Pacific Journal of Chemical Engineering, 2016

Abstract The swelling ratio of a packed coal bed in a coal liquefaction process derived recycle solvent (REC) and pure tetralin (THN) at elevated temperature and pressure is obtained by a so‐called linear variable differential transformer (LVDT) deformation transducer apparatus. Effects of ...

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Steam reforming of ethanol over mesoporous Rh/CeZrO2: Mechanistic evaluation using in situ DRIFT spectroscopy

21.01.2016 | Pankaj Kumar Sharma, Navin Saxena, Vimlesh Kumar Bind, Prasun Kumar Roy, Arti Bhatt, The Canadian Journal of Chemical Engineering, 2016

Abstract Mesoporous CeZrO2 support was prepared by a homogeneous urea coprecipitation route and loaded with 0.05 g/g (5 wt%) Rh2O3 to prepare supported Rh/CeZrO2 catalyst. The mesoporous nature of the catalyst was confirmed by N2 adsorption‐desorption studies, which revealed a type IV ...

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Thermal evaluation of PHB/PP‐g‐MA blends and PHB/PP‐g‐MA/vermiculite bionanocomposites after biodegradation test

21.01.2016 | Priscylla Jordânia Pereira de Mesquita, Rayson de Jesus Araújo, Laura Hecker de Carvalho, Tatianny Soares Alves, Ren ..., Polymer Engineering and Science, 2016

This study aimed to evaluate the thermal behavior of polyhydroxybutyrate (PHB)/polypropylene grafted with maleic anhydride (PP‐g‐MA) blends and PHB/PP‐g‐MA/vermiculite bionanocomposites submitted to the biodegradation test according to ASTM G 160‐03. The blends and bionanocomposites were ...

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Phase diagrams of thermally stable, polymer‐dispersed liquid crystals: Exploring the impact of chain length and chemical structure

18.01.2016 | Keon‐Soo Jang, LaShanda T.J. Korley, Polymer Engineering and Science, 2016

Polymer‐dispersed liquid crystals (PDLCs) has garnered significant interest and motivated the investigation of the phase behavior of thermally stable smectic liquid crystals (LCs) via thermally induced phase separation (TIPS). In this study, we examined a series of two, biphenyl‐based smectic ...

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