会议专题

Oil Column Method for Magnetic Microspheres with Core-shell Structure

  Spherical alumina catalysts have been widely used in fluidized bed and slurry-bed or catalyst carrier due to their excellent pore structure,large surface area,good physical strength and resistance to acids and stability.Magnetic microspheres of γ-Fe2O3 @ Al2O3 with core-shell structure were obtained by γ-Fe2O3 magnetic core coating with aluminum sol.After aging,drying and calcinations process,microspheres with certain hardness and magnetic properties can be obtained.During the preparation of core-shell structure microspheres,effect of both the content of aluminum sol,hexamethylenetetramine(HMT),magnetic core γ-Fe2O3 and process parameters of shaping time,aging temperature,calcination temperature on the properties of the spherical carrier was investigated.The optimum properties of microsphere carrier for hardness of 36.32 N/mm,specific surface area of 89.016 m2/g,pore volume of 0.874 cm3/g and average pore diameter 18.51 nm were synthesized,respectively.

Spherical alumina γ-Fe2O3 magnetic core Oil column method Magnetic carrier

Lianqing Yu Kaituo Dong Qianqian Zhi Mingjiang Cai

Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong(China Universit College of Science China University of Petroleum QingDao 266580, China

国际会议

the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

太原

英文

677-680

2012-07-13(万方平台首次上网日期,不代表论文的发表时间)