Preparation of Ni-MgO-La2O3 Catalyst on Alumina Support for Catalytic Tar Cracking Process
This study reported the synthesis of Ni-based catalysts on Al2O3 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 Al2O3 and other diffraction lines corresponding to metal and oxide promoters; Ni,MgO and/or NiO,(Ni,Mg)Al2O4,La2O3 and La(AlO3).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 La2O3-MgO-Ni/Al2O3 sequential impregnated catalyst had the highest surface area of 8.0-8.5 m2/g.
Nickel Lanthanum co-impregnation sequential impregnation tar removal
Sildara Thassanaprichayanont Duangduen Atong Viboon Sricharoenchaikul
National Metal and Materials Technology Center, 114 Thailand Science Park, Pathumthani, 12120,Thaila Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University,Bangkok 10
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
826-829
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）