کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9746686 | 1492403 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A laminar and turbulent ion flow reactor for studying ion/molecule reactions at variable pressures and temperatures
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A laboratory ion flow reactor operating under wide ranges of temperatures (213-373 K) and pressures (1-50 hPa) has been set up. This will allow for the potential detection of a variety of atmospheric trace gases to be measured by chemical ionization mass spectrometry. Flow dynamics of the reactor has been characterized in detail in order to extract reliable kinetic data and ion/molecule reactions. Direct comparison between the average ion flow velocity and the carrier gas flow velocity has been achieved experimentally under laminar and turbulent flow conditions. To validate this new setup, the reaction of SF6â ions with SO2 molecules has been studied giving kinetic and mechanistic results in excellent agreement with previous studies conducted at room temperature at low (<2 hPa) and very high pressures (>30 hPa). Consistent data have also been obtained under intermediate pressure conditions and at other temperatures, which definitely establishes SF6â + SO2 as a reference reaction for future fast flow reactor or reaction kinetics validation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 243, Issue 2, 15 May 2005, Pages 141-149
Journal: International Journal of Mass Spectrometry - Volume 243, Issue 2, 15 May 2005, Pages 141-149
نویسندگان
V. Catoire, E. Michel, C. Guimbaud, D. Labonnette, G. Poulet,