بررسی جذب ترکیب گوگردی دی بنزوتیوفن با استفاده از نانو جاذب UVM-7@ZIF-8 در فاز مایع در دمای محیط

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشکده شیمی، دانشگاه آزاد اسلامی واحد تهران شمال، ایران

2 حوزه معاونت فناوری و روابط بین‌الملل، پژوهشگاه صنعت نفت، تهران، ایران

3 مرکز تحقیقات نانوفناوری، پژوهشگاه صنعت نفت، تهران، ایران

10.22078/pr.2018.3247.2499

چکیده

در این تحقیق، نانو جاذب هیبریدی UVM-7@ZIF-8 به روش هیدروترمال سنتز شده و کارایی آن برای حذف ترکیب گوگردی دی بنزوتیوفن در فاز مایع در دمای محیط بررسی شده است. برای مطالعه بازده و ظرفیت حذف دی بنزوتیوفن توسط نانو جاذب، فاکتورهای مختلفی همچون مقدار جاذب، زمان و گزینش‎پذیری نسبت به ترکیب آروماتیک نفتالن بررسی شده است. بر طبق نتایج به‌دست آمده، نانو جاذب UVM-7@ZIF-8 بازده عالی، گزینش‎پذیری بالا و قابلیت بازیافت خوبی از خود برای حذف دی بنزوتیوفن تحت شرایط ملایم واکنش تا چهار مرحله نشان داده است. به‎علاوه، حذف دی بنزوتیوفن با حداکثر جذب mgS/g 2/299 برای UVM-7@ZIF-8 گزارش شده است. بر طبق نتایج به‌دست آمده از گزینش‎پذیری بالای جاذب و عدم وجود برهم‎کنش‎های π−π نتیجه‎گیری شده است که حضور مکان‎های غیراشباع حول مراکز فلزی باعث فرآیند گوگردزدایی جذبی است. برای بررسی بیشتر مکانیسم جذب از نمونه‎ها پس از قرار گرفتن در معرض DBT، آنالیزهای XRD و FT-IR گرفته شد.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Adsorptive Removal of Dibenzothiophene Using UVM-7 at ZIF-8 as Nano-Adsorbent in Liquid Phase at Room Temperature

نویسندگان [English]

  • Raheleh Saeedirad 1
  • Mansour Bazmi 2
  • Alimorad Rashidi 3
  • Saeed Taghvaei Ganjali 1
1 Chemistry Department, Islamic Azad University, North Tehran Branch, Tehran, Iran
2 Deputy of Technology and International Affairs, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
3 Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
چکیده [English]

In this study, the UVM-7 at ZIF-8 hybrid nanoparticle was synthesized using hydrothermal method, and its application was investigated to remove the sulfur compound of Dibenzothiophene in the liquid phase at R. T. To study the efficiency and DBT removal capacity of the as-prepared nano-adsorbent, various factors such as the amount of adsorbent, time and selectivity toward aromatic compound of naphthalene have been investigated. According to the results, the UVM-7@ZIF-8 showed high selectivity and good recycling ability to eliminate DBT under mild conditions. In addition, removal of DBT has been reported with a maximum absorption of 299.2 mgS/g for UVM-7@ZIF-8. Due to the high adsorption capacity and absence of π-π interactions, it has been suggested that the presence of non-saturated sites around metal centers were responsible for the absorptive desulfurization process. For determining the desulfurization mechanism, we characterized the exhausted samples through FTIR, and XRD measurements were characterized.In addition, the results against fresh samples were compared with each other.
 

کلیدواژه‌ها [English]

  • Nano-adsorbents
  • Selectivity
  • Dibenzothiophene
  • Desulfurization
  • Metal-organic Frameworks

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