Synthesis and characterization of Co-Mo γ-alumina catalyst from local kaolin clay for hydrodesulfurization of Iraqi naphtha
Other Title(s)
تحضير و تقييم العامل المساعد Co-Moالمحمل على كاما الومينا المحضرة من الكاؤولين المحلي لهدرجة النفثا العراقية
Joint Authors
Husayn, Sattar Jalil
Uwayyid, Khalifah..
Ibrahim, Sad Karim
Mahawi, Ibtisam K.
Zaki, Nada Ahmad Sadun
Source
Journal of Petroleum Research and Studies
Issue
Vol. 2021, Issue 30 (28 Feb. 2021), pp.84-106, 23 p.
Publisher
Ministry of Oil Petroleum Research and Development Center
Publication Date
2021-02-28
Country of Publication
Iraq
No. of Pages
23
Main Subjects
Topics
Abstract EN
This work deals with the hydrodesulfurization of three types of naphtha feedstocks; mixed naphtha (WN), heavy naphtha (HN) & light naphtha (LN) with a sulfur content of 1642.1, 1334.9 & 709 ppm respectively, obtained from Missan refinery using prepared Co-Mo/γ-Al2O3 catalyst.
The Iraqi white kaolin was used as a starting material for the preparation of γ-Al2O3 support, transferring kaolin to meta-kaolin was studied through calcination at different temperatures and durations, kaolin structure was investigated using X-Ray diffraction techniques.
High purity 94.83% .
Crystalline γ-Al2O3 with a surface area of 129.91 m2/gm, pore volume 0.9002 cm3/g was synthesized by extraction of Iraqi kaolin with H2SO4 at different acid to clay weight ratios, acid concentrations & leaching time.
Ethanol was used as precipitating agent; the resultant gel was dried and calcined at 70OC, 10 hrs & 900 OC, 2 hrs respectively.
The effects of different parameters on the average crystallinity and extraction % of synthesized γ-Al2O3 were studied like; acid: clay ratio, sulfuric acid concentration, leaching time, leaching temperature & kaolin conversion to metakaolin.
Characterization of prepared γ-Al2O3 & Co-Mo catalyst were achieved by X-ray diffraction, FTIR-spectra, texture properties & BET surface area, BJH N2 adsorption porosity, AFM, SEM, crush strength & XRF tests.
Co-Mo/ γ-Al2O3 catalyst with final loading 5.702 wt% and 21.45 wt% of Co and Mo oxides respectively was prepared by impregnation methods.
The activity of prepared Co-Mo/γ-Al2O3 catalyst after moulding to be tested for hydrodesulfurization (HDS) of naphtha feedstock W.
N, H.
N & L.
N was performed using a pilot hydrotreating unit at petroleum research & development centre, at different operating conditions.
Effects of temperature, LHSV, pressure, time & pore size distribution were studied, the best percentage of sulfur removal is increased with decreasing LHSV to 2 hr-1 as a general trend to be 89.71, 99.72, 99.20 % at 310oC for the whole naphtha, heavy naphtha and light naphtha feedstocks respectively, at 34 bar pressure and 200/200 cm3/cm3 H2/HC ratio.
American Psychological Association (APA)
Zaki, Nada Ahmad Sadun& Husayn, Sattar Jalil& Uwayyid, Khalifah..& Ibrahim, Sad Karim& Mahawi, Ibtisam K.. 2021. Synthesis and characterization of Co-Mo γ-alumina catalyst from local kaolin clay for hydrodesulfurization of Iraqi naphtha. Journal of Petroleum Research and Studies،Vol. 2021, no. 30, pp.84-106.
https://search.emarefa.net/detail/BIM-1271050
Modern Language Association (MLA)
Zaki, Nada Ahmad Sadun…[et al.]. Synthesis and characterization of Co-Mo γ-alumina catalyst from local kaolin clay for hydrodesulfurization of Iraqi naphtha. Journal of Petroleum Research and Studies No. 30 (2021), pp.84-106.
https://search.emarefa.net/detail/BIM-1271050
American Medical Association (AMA)
Zaki, Nada Ahmad Sadun& Husayn, Sattar Jalil& Uwayyid, Khalifah..& Ibrahim, Sad Karim& Mahawi, Ibtisam K.. Synthesis and characterization of Co-Mo γ-alumina catalyst from local kaolin clay for hydrodesulfurization of Iraqi naphtha. Journal of Petroleum Research and Studies. 2021. Vol. 2021, no. 30, pp.84-106.
https://search.emarefa.net/detail/BIM-1271050
Data Type
Journal Articles
Language
English
Notes
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Record ID
BIM-1271050