首页|Preparation of Ni - MgO- La_2O_3 Catalyst on Alumina Support for Catalytic Tar Cracking Process
Preparation of Ni - MgO- La_2O_3 Catalyst on Alumina Support for Catalytic Tar Cracking Process
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NETL
NSTL
Trans Tech Publications Ltd
This study reported the synthesis of Ni -based catalysts on Al_2O_3 support carried out by two different methods including co-impregnation and sequential impregnation. Different nitrate solutions of nickel, lanthanum, and magnesium were used for support impregnation. The calination process was carried out at 650℃ and 850℃ for 2 h under air. The XRD patterns of the catalyst samples presented main phases of Al_2O_3 and other diffraction lines corresponding to metal and oxide promoters; Ni, MgO and/or NiO, (Ni,Mg)Al_2O_4, La_2O_3 and La(AlO_3). Prepared catalysts appeared in irregular shaped agglomerates of small particles of less than 1 micron. Surface area of co-impregnated catalysts increased with increasing calcination temperature while ones from sequential impregnation decreased except for those last impregnated with nickel salts. The La_2O_3-MgO-Ni/Al_2O_3 sequential impregnated catalyst had the highest surface area of 8.0-8.5 m~2/g.
NETL
NSTL
Trans Tech Publications Ltd
