采用反相悬浮聚合,以纳米SiO2为模板制备出含Ni 2+的聚糠醇微粒,将其作为碳前驱体,经炭化和后处理成功制得Ni掺杂粒径可控碳分子筛(CMS)。利用XRD、N2吸附、FT-IR和TGA对其制备机理和微结构进行了表征。结果表明,不同炭化条件对CMS粒径大小及分布有一定的影响;炭化温度由650℃升至700℃,介孔体积和总孔容量分别升至0.40和0.67cm3/g,升温速率提高微孔孔容量增加2倍;XRD和AAS分析显示有2.24%(质量分数)镍掺杂到CMS中。
Nickel-doped carbon molecular sieves(CMS) with controlled particle size have been prepared by the method of inverse suspension polymerization to synthesize poly(furfuryl alcohol) with nickel nitrate as carbon precursor,utilizing template porous nanosilica,through a mild carbonization and post-treatment process.The preparation mechanism and micro-structure of CMS have been characterized through XRD,SEM,N2 adsorption,FT-IR and TGA.The results show that the different carbonization conditions have a definite effect on the particle size and distribution of CMS,additionally,when the carbonization temperature from 650℃ up to 700℃,the mesopore volume and the total pore volume raised to 0.40 and 0.67cm3/g,respectively.The micropore volume has expanded twice with the carbonization heating rate increased.The XRD and AAS analysis proved that nickel have been doped into CMS by ratio of 2.24wt% successfully.