بهینه‌سازی کاتالیست Ni/Al2O3 برای فرآیند ریفرمینگ خشک متان در راکتور میکروکانالی

نوع مقاله : مقاله پژوهشی

نویسندگان

آزمایشگاه کاتالیست، دانشکده نفت و پتروشیمی، دانشگاه رازی، کرمانشاه، ایران

10.22078/pr.2022.4782.3155

چکیده

غیرفعال شدن کاتالیست‌های Ni/Al2O3 در فرآیند ریفرمینگ خشک متان همواره یکی ازمشکلات این فرآیند می‌باشدکه بسیار مورد توجه محققان بوده است. استفاده از کبالت به عنوان تقویت کننده‌های فاز فعال و اکسید منیزیم جهت بهبود پایداری کاتالیست در این تحقیق مورد بررسی قرار گرفته است. همچنین برای توزیع بهتر کاتالیست و انتقال حرارت بهتر از راکتور میکرو کانالی استفاده شد. بنابراین کاتالیست‌های Ni-Co/Al2O3-MgO تهیه و عملکرد آنها در راکتور میکروکانالی در دمای 500 تا C° 800 و فشار atm 1 با نسبت مولی خوراک CH4/CO2=1 و سرعت فضایی L/g.h 24 بررسی گردید. در این پژوهش، تأثیر افزودن بهبود دهنده ها برکارآیی کاتالیست های سنتز شده بررسی گردید و نسبت بهینه Ni/Co برابر 5 در ساختار کاتالیست استفاده شده در میکروراکتور بدست آمد. مشخصات نمونه های سنتز شده توسط آنالیزهای XRD ،BET و FESEM بررسی گردید. استفاده همزمان از کبالت و اکسید منیزیم  باعث بیشتر شدن فعالیت کاتالیست و پایدارتر شدن آن در طی h 18 آزمایش می‌گردد.
 

کلیدواژه‌ها


عنوان مقاله [English]

Optimization of Ni/Al2O3 Catalyst for Dry Methane Reforming Process in Microchannel Reactor

نویسندگان [English]

  • Seid Reza Yahyavi
  • Gholamreza Moradi
Catalyst Laboratory, Faculty of Petroleum and Petrochemical, Razi University, Kermanshah, Iran
چکیده [English]

Inactivation of Ni catalysts in the dry reforming of methane process has been one of the issues of concern. The use of active and base phase promotors and the synthesis of Ni-CO / Al2O3-MgO catalysts by impregnation method have been considered in our research. The main focus of this study is to evaluate the effect of addition of the promotors on the performance of synthesized catalysts in wall-coated microchannel reactor. XRD, BET and FESEM analyzes have been performed to determine the characteristics of the synthesized samples. The use of amplifiers increases the catalyst activity and makes it more stable.
 

کلیدواژه‌ها [English]

  • Catalyst
  • Reforming
  • Methane
  • Hydrogen
  • Microchannel Reactor
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