کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7612324 1493555 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Observation of enhanced heat dissipation in columns packed with superficially porous particles
ترجمه فارسی عنوان
مشاهدات تسریع افزایش گرما در ستونهای بسته شده با ذرات سطحی متخلخل
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
At high flow rates and pressures, columns packed with sub-2 μm particles suffer from efficiency losses due to frictional heating. The thermal environment of the column (insulated or isothermal) can decrease or magnify these losses. While a number of studies have been conducted demonstrating the improved performance (partially due to the benefits of enhanced thermal conductivity) of columns packed with superficially porous particles, none have made a comparison between sub-2 μm fully and superficially porous particles in an isothermal environment where radial thermal gradients are maximized and thermal broadening is amplified. Here we show that when such columns are characterized in a recirculating water jacket (providing an isothermal environment), efficiency loss and changes in retention and mobile phase temperature are reduced for sub-2 μm superficially porous particles compared to sub-2 μm fully porous particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1371, 5 December 2014, Pages 261-264
نویسندگان
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