Performance and phase change studies of promoted and aged Fe-Zn-K catalyst, having simultaneous base and promoting effects of Zn, for Fischer-Tropsch-Synthesis

سال انتشار: 1384
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,109

فایل این مقاله در 20 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

NICEC10_203

تاریخ نمایه سازی: 6 بهمن 1385

چکیده مقاله:

The Fe-Zn-K catalyst is a promoted catalyst by potassium and its base can also play the role of the catalyst promoter. The performance of this aged catalyst and two other identical catalysts was studied and discussed in order to describe the dual effects of zinc in production of ethylene and propylene. The optimum conditions of their performance in Fischer-Tropsch-Synthesis (FTS) were determined. Also, scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques related to the phase and elutriation changes were studied, which were as a result of changing the ageing time of the Fe/Zn/K precursors and the catalysts. In addition the effects of the potassium increase on the textures of the Fe/Zn precursor and catalyst were studied. The crystalline structure of the main catalyst Fe/Zn/K, with an ageing time 1 hour, was also studied using the XRD technique.

کلیدواژه ها:

Fischer – Tropsch - Synthesis ، Promoter effects ، Fe-Zn-K catalyst ، ، Co-precipitation and ageing methods ، MES ، XRD

نویسندگان

Ateshi

Dept. Of Chem. Engg., Univ. Of Sistan & Baluchestan

Akhavan

Dept. Of Chem. Engg., Univ. Of Sistan & Baluchestan

Khoshnoodi

Dept. Of Chem. Engg., Univ. Of Sistan & Baluchestan

مراجع و منابع این مقاله:

لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :
  • - Hisanori, A. ; Yasuyuki, M. :Yoshie, S. _ "A ...
  • - Robert J. O'Brien et al, " Activity, selectivity and ...
  • - Shen, W.J. : Yan, S.R. ; Zhou, J.L. ; ...
  • - Yan, S-R; Zhou, J-L; Lin, H-S, _ Effect of ...
  • - Haghshenas fard, M.; Kho shnoodi, M. ; Maleki, L.; ...
  • - Zhao - Tie _ 2" Mossbauer study of Fe/Cu/K ...
  • - Dictor, R.A; Bell, A., "F-T-S over reduced and unreduced ...
  • - Bukur, D.B. : Mukesh, D.; Patel, S.A. _ _ ...
  • _ "Catalyst HandBook", _ _ Wolf Publishing ltd. _ 110(1989). ...
  • - Smith, L.; Gerald, V., _ Heterogeneous catalysis in organic ...
  • - Mohammadi M.R., M.Sc. thesis , "Optical characterizati On of ...
  • - Steinberg A.P.; Espinoza R.L.; Jager B.; Vosloo A.C., "High ...
  • - Kuiper E.W., "Non-ASF product distribution due to secondary reactions ...
  • - Leonide A., ' _ Crystal lography with x-ray", Translated ...
  • - Moradi G.; Basir M.M.; Taeb A., "Zirconium effects on ...
  • in Iranian Chemical Engineering Congress (IChEC10), Sistan & Balochestan University ...
  • نمایش کامل مراجع