Reactive adsorption desulfurization coupling aromatization on Ni/ZnO-Zn_6Al_2O_9 prepared by Zn_xAl_y(OH)_2(CO_3)_z·x H_2O precursor for FCC gasoline
Aiming to improve the reactive adsorption desulfurization(RADS) performances of Ni/Zn O adsorbents,ZnxAly(OH)2(CO3)z·x H2 O precursor is synthesized by coprecipitation of Zn2+,AlO-2,and CO2-3; the Zn OZn6Al2O9 composite oxides are obtained by the calcination of ZnxAly(OH)2(CO3)z·x H2 O precursor,and...
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Published in | 能源化学:英文版 Vol. 24; no. 4; pp. 503 - 511 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2015
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Subjects | |
Online Access | Get full text |
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Summary: | Aiming to improve the reactive adsorption desulfurization(RADS) performances of Ni/Zn O adsorbents,ZnxAly(OH)2(CO3)z·x H2 O precursor is synthesized by coprecipitation of Zn2+,AlO-2,and CO2-3; the Zn OZn6Al2O9 composite oxides are obtained by the calcination of ZnxAly(OH)2(CO3)z·x H2 O precursor,and the Ni/Zn O-Zn6Al2O9(6.0 wt% Ni O) adsorbents are prepared by wetness impregnation method. The phase,acid strength,acid type and quantity,morphology,and thermal properties were characterized by X-ray diffraction,temperature-programmed desorption of ammonia,pyridine-adsorbed infrared spectrum,high-resolution transmission electron microscopy,and Thermo Gravimetry-Derivative Thermo Gravimetry(TG-DTG),respectively. The breakthrough sulfur capacities of six adsorbents are between 34.2 and 47.9 mg/gcat. The kinetic studies indicated that the active energy of RADS(49.4 k J/mol) could reach nano-sized Zn O,the particle size of is about 12.0 nm. All the excellent RADS performances can be due to the high SBET. Also,there are some extents of aromatization reactions that occur,which can be contributed to the B?nsted acid rooted in Zn6Al2O9 composite oxide,and the octane number of products can be preserved well. |
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Bibliography: | Reactive adsorption desulfurization; ZnxAly(OH)2(CO3)z·x H2O precursor; Ni/Zn O-Zn6Al2O9; FCC gasoline; Aromatization 21-1585/O4 Aiming to improve the reactive adsorption desulfurization(RADS) performances of Ni/Zn O adsorbents,ZnxAly(OH)2(CO3)z·x H2 O precursor is synthesized by coprecipitation of Zn2+,AlO-2,and CO2-3; the Zn OZn6Al2O9 composite oxides are obtained by the calcination of ZnxAly(OH)2(CO3)z·x H2 O precursor,and the Ni/Zn O-Zn6Al2O9(6.0 wt% Ni O) adsorbents are prepared by wetness impregnation method. The phase,acid strength,acid type and quantity,morphology,and thermal properties were characterized by X-ray diffraction,temperature-programmed desorption of ammonia,pyridine-adsorbed infrared spectrum,high-resolution transmission electron microscopy,and Thermo Gravimetry-Derivative Thermo Gravimetry(TG-DTG),respectively. The breakthrough sulfur capacities of six adsorbents are between 34.2 and 47.9 mg/gcat. The kinetic studies indicated that the active energy of RADS(49.4 k J/mol) could reach nano-sized Zn O,the particle size of is about 12.0 nm. All the excellent RADS performances can be due to the high SBET. Also,there are some extents of aromatization reactions that occur,which can be contributed to the B?nsted acid rooted in Zn6Al2O9 composite oxide,and the octane number of products can be preserved well. |
ISSN: | 2095-4956 |