Transalkylation of heavy polyalkylbenzenes by bentonite catalyst

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
View: 314

متن کامل این Paper منتشر نشده است و فقط به صورت چکیده یا چکیده مبسوط در پایگاه موجود می باشد.
توضیح: معمولا کلیه مقالاتی که کمتر از ۵ صفحه باشند در پایگاه سیویلیکا اصل Paper (فول تکست) محسوب نمی شوند و فقط کاربران عضو بدون کسر اعتبار می توانند فایل آنها را دریافت نمایند.

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

NICEC16_201

تاریخ نمایه سازی: 7 خرداد 1398

Abstract:

In this research, sulfuric acid-activated bentonite and alumina-pillared sulfuric acid-activated bentonite were prepared as catalysts for transalkylation of heavy polyalkylbenzenes with benzene to produce linear alkylbenzenes. The catalysts were characterized by X-ray diffraction, nitrogen adsorption-desorption isotherms, and temperature programmed desorption of NH3. The reactions were carried out in a batch-slurry reactor and the effect of changes on reaction parameters such as temperature, catalyst, and composition ratio of the feed mixture was considered. It was found that acid-activation and pillaring increased the surface area, porosity and acidity of the catalysts. The conversion and selectivity of the catalysts were found to increase with increased benzene to polyalkylbenzenes volume ratio and the optimal temperature of catalytic transalkylation reaction of heavy polyalkylbenzenes was found to be 225 °C. The alumina-pillared sulfuric acid-activated bentonite possessed higher catalytic activity than sulfuric acid-activated bentonite and it showed 80% conversion of heavy polyalkylbenzenes and 85% selectivity to linear alkylbenzenes at optimum conditions (225 °C and benzene to polyalkylbenzenes volume ratio of 16).

Authors

Mohammad Ghadiri

Chemical Engineering Department, Faculty of Engineering, Arak University, P.O. Box: ۳۸۱۵۶۸۸۳۴۹, Arak, Iran

Kayghobad Shams

Chemical Engineering Department, Isfahan University of Technology, P.O. Box: ۸۴۱۵۶۸۳۱۱۱, Isfahan, Iran.

Sadegh Moradi

Chemical Engineering Department, Faculty of Engineering, Arak University, P.O. Box: ۳۸۱۵۶۸۸۳۴۹, Arak, Iran