کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5365873 | 1388339 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and ethylene adsorption of natural and modified clinoptilolites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The ethylene adsorption of Turkey clinoptilolite-rich tuff from Gordes and Bigadic region of western of Anatolia and their exchanged forms (K+, Na+ and Ca2+) were investigated. The clinoptilolite samples were characterized using XRD, TG-DTA and nitrogen adsorption methods. Adsorption isotherms for ethylene on natural and modified forms of both adsorbents at 277Â K and 293Â K were obtained at pressures up to 38Â kPa. Uptake of ethylene increased as Na-CLNÂ <Â Ca-CLNÂ <Â K-CLNÂ <Â Natural CLN for Gordes zeolite at 277Â K, 293Â K and for Bigadic zeolite at 277Â K. For Bigadic zeolites at 293Â K, uptake of ethylene increased in the order Ca-CLNÂ <Â Na-CLNÂ <Â K-CLNÂ <Â Natural CLN. It was found that ethylene adsorption capacity of Bigadic clinoptilolite samples was much greater than Gordes clinoptilolite samples except K+ modified forms at both temperatures. These results show that both natural clinoptilolites have a considerable potential for the removal of ethylene.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 8, 15 February 2008, Pages 2450-2457
Journal: Applied Surface Science - Volume 254, Issue 8, 15 February 2008, Pages 2450-2457
نویسندگان
Burcu ErdoÄan, Meryem Sakızcı, ErtuÄrul YörükoÄulları,