کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9617736 | 49168 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ diagnostics of zeolite crystallization by ultrasonic monitoring
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: In situ diagnostics of zeolite crystallization by ultrasonic monitoring In situ diagnostics of zeolite crystallization by ultrasonic monitoring](/preview/png/9617736.png)
چکیده انگلیسی
The crystal growth of zeolites A and X was tracked by the on-line monitoring of the transport properties of ultrasonic (US) waves in the reaction mixture during the crystallization. Characteristic variations in the mechanical properties of the synthesis gels caused by its development and the onset and the completion of the crystal growth step have been identified by the phase sensitive measurement of the velocity and amplitude of ultrasonic (US) waves. This was verified by ex situ XRD analysis and particle size measurements. The interaction of gel and US waves is discussed. It is demonstrated that real-time in situ US diagnostics are a promising tool for the investigation of zeolite crystallization and for industrial process control.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 80, Issues 1â3, 2 May 2005, Pages 1-9
Journal: Microporous and Mesoporous Materials - Volume 80, Issues 1â3, 2 May 2005, Pages 1-9
نویسندگان
R. Herrmann, W. Schwieger, O. Scharf, C. Stenzel, H. Toufar, M. Schmachtl, B. Ziberi, W. Grill,