Nano Pt-W/γ-Al2O3 Catalyst is Used for Reforming Sweet Heavy Naphtha

Karrar A. M.  Deabl; Usama A. Saed; Huda H. M. Al-Muqdadi

doi:10.52716/jprs.v16i2.1126

المؤلفون

Karrar A. M. Deabl وزارة النفط، شركة مصافي الوسط، مصفى النجف
Usama A. Saed قسم الهندسة الكيميائية، كلية الهندسة، جامعة النهرين، بغداد، العراق.
Huda H. M. Al-Muqdadi وزارة النفط، الشركة العامة لتعبئة وخدمات الغاز، فرع النجف.

DOI:

https://doi.org/10.52716/jprs.v16i2.1126

الكلمات المفتاحية:

Nano γ-Al2O3, Bimetallic Catalyst, Sweet Heavy Naphtha, Octane Number.

الملخص

عملية إعادة تشكيل تحفيزية للنفثا الثقيلة الحلوة لإنتاج بنزين عالي الرقم الأوكتاني (reformate) باستخدام البلاتين ثنائي المعدن (Pt) والتنغستن (W) المحمّل على نانو γ-Al₂O₃ كحامل, حُضّرت بطريقة التشريب الرطب، وحُدّدت خصائصها باستخدام مطياف الامتصاص الذري (AAS)، ومجهر القوة الذرية (AFM)، والمجهر الإلكتروني الماسح (SEM)، والمساحة السطحية (BET)، وقوة السحق. أظهرت النتائج ارتفاع المساحة السطحية إلى 340.1 متر مربع/جم، وحجم المسام إلى 0.326 سم مكعب/جم، وقطر المسام إلى 6.139 نانومتر، ومتوسط حجم الجسيمات إلى 64.64 نانومتر عند تحميل 0.3% وزناً من البلاتين و0.3% وزناً من W على نانو γ-Al₂O₃. تم دراسة فعالية المحفز النانوي المُحضر من ((Pt-W/γ-Al₂O₃ باستخدام النافثا الحلوة الثقيلة عند نطاق درجة حرارة (470 إلى 520 درجة مئوية)، وضغط 15 بار، ونسبة H₂/HC = 6 في مفاعل حشوات لوحدة تجريبية للإعادة التشكيل التحفزية. وتم الحصول على أفضل نتيجة بحثية، حيث بلغ الرقم الأوكتاني 88.5 للبنزين الناتج عند درجة حرارة 500 درجة مئوية. وأخيرا وليس آخرا، أظهرت نتائج إضافة التنغستن إلى المحفز النانوي تحسنا في التفاعلات الكيميائية.

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