التفكك الحفزي للماء الأكسيجيني بوجود الزيوليت والغضار
Abstract
أجرينا الدراسة على عينة من الزيوليت الطبيعي، وأخرى من الغضار الطبيعي وذلك لتحديد دور هذه المواد في تفاعل التفكك الحراري الحفزي للماء الأكسيجيني.
يؤدي وجود الزيوليت إلى تفكك الماء الأكسيجيني بسرعة واضحة في بداية التفاعل والتي تتباطأ بعد فترة زمنية، ولكن يستمر تفاعل التفكك حتى النهاية تقريباً، وتكون طاقة تنشيط التفاعل حوالي 9kJ/mol، بينما في حالة استخدام الغضار يكون التفاعل سريعاً في بدايته ويستمر لفترة محددة ثم يتوقف عملياً، ويكون سلوك الغضار مختلفاً عن سلوك الزيوليت في الفعل الحفزي لتفكك الماء الأكسيجيني، وتكون طاقة تنشيط التفاعل حوالي 20kJ/mol، وبالتالي يمكن استخدام الزيوليت والغضار الخام الطبيعي في سوريا كمحفزات في التفاعلات الحفزية المختلفة.
We studied two samples, zeolite and clay, to determine the role of these materials in the catalytic decomposition of hydrogen peroxide.
The presences of zeolite sample lead to decomposition of hydrogen peroxide with specific velocity, in the beginning of the reaction. Then the velocity decreases, but the reaction continuous to the end, and the activation energy about 9kj/mol. In the case of clay, the behavior is different from zeolite, and the activation energy about 20kj/mol.
It might be to use the natural zeolite and clay in Syria as catalysts in different catalytic reactions.
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