کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7611961 | 1493543 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Feasibility of the preparation of silica monoliths for gas chromatography: Fast separation of light hydrocarbons
ترجمه فارسی عنوان
امکان تهیه سیلیس مونولیت برای کروماتوگرافی گاز: جداسازی سریع از هیدروکربن های سبک
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The preparation conditions of silica monoliths for gas chromatography were investigated. Silica-based monolithic capillary columns based on sol-gel process were tested in the course of high-speed gas chromatographic separations of light hydrocarbons mixture (C1-C4). The impact of modifying the amount of porogen and/or catalyst on the monolith properties were studied. At the best precursor/catalyst/porogen ratio evaluated, a column efficiency of about 6500 theoretical plates per meter was reached with a very good resolution (4.3) for very light compounds (C1-C2). The test mixture was baseline separated on a 70Â cm column. To our knowledge for the first time a silica-based monolithic capillary column was able to separate light hydrocarbons from methane to n-butane at room temperature with a back pressure in the range of gas chromatography facilities (under 4.1Â bar).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1383, 27 February 2015, Pages 127-133
Journal: Journal of Chromatography A - Volume 1383, 27 February 2015, Pages 127-133
نویسندگان
Imadeddine Azzouz, Anouar Essoussi, Joachim Fleury, Raphael Haudebourg, Didier Thiebaut, Jerome Vial,