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Utilization of Loaded Cobalt onto MCM-48 Mesoporous Catalyst as a Heterogeneous Reaction in a Fixed Bed Membrane Reactor to Produce Isomerization Product from n-Heptane
被引:34
|作者:
Ali, Nisreen S.
[1
]
Salih, Issam K.
[2
]
Harharah, Hamed N.
[3
]
Majdi, Hasan Sh.
[2
]
Salih, Hussein G.
[4
]
Kalash, Khairi R.
[5
]
Al-Shathr, Ali
[4
]
Al-Sudani, Farah T.
[4
]
Abdulrahman, Mahir A.
[4
]
Alrubaye, Jamal M.
[4
]
Albayati, Talib M.
[4
]
Saady, Noori M.
[6
]
Zendehboudi, Sohrab
[7
]
机构:
[1] Mustansiriyah Univ, Coll Engn, Mat Engn Dept, POB 14022, Baghdad, Iraq
[2] Al Mustaqbal Univ, Dept Chem Engn & Petr Ind, Babylon 51001, Iraq
[3] King Khalid Univ, Coll Engn, Dept Chem Engn, Abha 61411, Saudi Arabia
[4] Univ Technol Iraq, Dept Chem Engn, 52 Alsinaa St,POB 35010, Baghdad, Iraq
[5] Minist Sci & Technol, Environm & Water Directorate, Baghdad 10070, Iraq
[6] Mem Univ, Dept Civil Engn, St John, NF A1B 3X5, Canada
[7] Mem Univ, Dept Proc Engn, St John, NF A1B 3X5, Canada
来源:
关键词:
catalytic reactor;
catalyst characterization;
selectivity;
metallic catalyst;
reaction kinetics;
isomerization;
MOLECULAR-SIEVES;
PORE STRUCTURE;
HYDROISOMERIZATION;
PERFORMANCE;
OCTANE;
NAPHTHA;
SILICA;
HEXANE;
D O I:
10.3390/catal13071138
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The use of catalytic membranes as microstructured reactors without a separative function has proved effective. High catalytic activity is possible with minimal mass transport resistances if the reactant mixture is pushed to flow through the pores of a membrane that has been impregnated with catalyst. In this study, n-heptane (C7H16) was hydrocracked and hydro-isomerized within a plug-flow zeolitic catalytic membrane-packed bed reactor. The metallic cobalt (Co) precursor at 3 wt.% was loaded onto support mesoporous materials MCM-48 to synthesize heterogeneous catalysis. The prepared MCM-48 was characterized by utilizing characterization techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDAX), Fourier transform infrared (FTIR), nitrogen adsorption-desorption isotherms, and the Brunauer-Emmett-Teller (BET) surface area. The structural and textural characteristics of MCM-48 after encapsulation with Co were also investigated. The analyses were performed before and after metal loading. According to the results, the 3 wt.% Co/MCM-48 of metallic catalyst in a fixed bed membrane reactor (MR) appears to have an excellent catalytic activity of similar to 83% during converting C7H16 at 400 degrees C, whereas a maximum selectivity was approximately similar to 65% at 325 degrees C. According to our findings, the synthesized catalyst exhibits an acceptable selectivity to isomers with multiple branches, while making low aromatic components. In addition, a good catalytic stability was noticed for this catalyst over the reaction. Use of 3 wt.% Co/MCM-48 catalyst led to the highest isomerization selectivity as well as n-heptane conversion. Therefore, the heterogeneous catalysis MCM-48 is a promising option/ alternative for traditional hydrocracking and hydro-isomerization processes.
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页数:14
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