کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148521 | 1462100 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Control of partial pressure of oxygen in the ppm range based on a two metal-oxide buffer system
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Control of partial pressure of oxygen in the ppm range based on a two metal-oxide buffer system Control of partial pressure of oxygen in the ppm range based on a two metal-oxide buffer system](/preview/png/7148521.png)
چکیده انگلیسی
An innovative oxygen loading system which controls the partial pressure of oxygen (pO2) in a continuous inert gas stream in the range 10â4-10â7 bar is developed and successfully tested. It relies on adjusting the electro-chemical equilibrium in a metal oxide buffer via temperature control. The buffer consists of a mixture of small 1.5 mm diameter spheres composed of Cu2O and CuO. The buffer system is integrated into a furnace and heated to the operational temperature range below 900 °C. A continuous inert gas stream is guided through the buffer system while at operating temperature. The performance of the loading system is verified by comparing the pO2 values, which are deduced via the buffer temperature following the Ellingham diagrams with the readout of a conventional zirconia-based oxygen sensor. The measured curve follows the Ellingham diagram for this material system within the error margin. The system reveals a fast response time and allows for active control of the partial pressure of oxygen in a laminar streaming inert gas atmosphere with low complexity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 190, January 2014, Pages 702-706
Journal: Sensors and Actuators B: Chemical - Volume 190, January 2014, Pages 702-706
نویسندگان
M. Körner, M. Schulz, H. Fritze, Ch. Stenzel,