impregnación de platino y dimensión fractal en dos tipos de sólidos microporosos platinum impregnation and fractal dimension on two types of micro-porous solids
تشريب البلاتين والبعد الكسيري في نوعين من المواد الصلبة دقيقة المسام
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Abstract
This research shows the modification of a zeolite Y and a pillared clay (saponite) by impregnation with different platinum quantities (synthesis of Pt catalysts). The solids were characterized about the chemical composition and texture. The textural characterization reveals important changes in the solids, showing that in the zeolitic catalysts microporosity is formed, whereas in the pillared clay the microporous structures are partially blocked. Fractal dimension (by Avnir-Jaroniec method) indicates that the topographic features of the pillared clay surface are significantly affected due to the modification with platinum, probably as a consequence of platinum clusters formation.
تُظهر هذه الدراسة تعديل زيوليت Y وطين مدعّم (سابونيت) عن طريق التشريب بكميات مختلفة من البلاتين (تخليق محفزات البلاتين). جرى توصيف المواد الصلبة من حيث التركيب الكيميائي والبنية النسيجية. ويكشف التوصيف النسيجي عن تغيرات مهمة في المواد الصلبة، مبيناً تشكّل مسامية دقيقة في محفزات الزيوليت، في حين تُسد البنى المسامية الدقيقة جزئياً في الطين المدعّم. ويشير البعد الكسوري (باستخدام طريقة أفنير-يارونيك) إلى أن السمات الطبوغرافية لسطح الطين المدعّم تتأثر تأثراً كبيراً نتيجة التعديل بالبلاتين، ويُعزى ذلك على الأرجح إلى تشكّل عناقيد البلاتين.
| Reference Key |
carriazo2010revistaimpregnacin
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|---|---|
| Authors | ;José G. Carriazo;Mario Barrera-Vargas;Manuel F. Molina |
| Journal | revista ingenierías universidad de medellín |
| Year | 2010 |
| DOI |
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