کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
207173 461208 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deoxygenation of dodecanoic acid under inert atmosphere
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Deoxygenation of dodecanoic acid under inert atmosphere
چکیده انگلیسی

A laboratory-scale fixed bed reactor (down-flow) was developed for the deoxygenation of dodecanoic (lauric) acid under inert atmosphere. This reaction can be utilized to produce renewable diesel components. The main products were undecane (decarboxylation) and undecene (decarbonylation). The catalysts were a palladium catalyst supported on mesoporous carbon, Sibunit (egg-shell type with spherical granules of 1.6–2.0 mm in diameter), and a commercial Pd/C catalyst. The challenge was to obtain a high activity and selectivity to undecane, as pure dodecanoic acid without any solvents was used. Moreover, the complete reactor system consisting of a reactant feed vessel, a pump, lines, a sampling valve, and a collector of the residue had to be heated, since saturated fatty acids with more than nine carbon atoms have a melting point exceeding 20 °C. The influence of reaction conditions, such as reaction temperature (300–360 °C), pressure (5–20 bar), gas flow rate, reactant concentrations, was studied. The reactant conversion increased when an inert gas (argon) flow was applied co-currently with the reactant flow. The argon pressure did not have any significant impact on the performance. The reason for the catalyst deactivation was determined to be coking.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 89, Issue 8, August 2010, Pages 2033–2039
نویسندگان
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