【摘要】 以废弃的流化催化裂化催化剂（简称SFCC）为载体、β-环糊精为金属络合剂、硝酸镍为镍源,采用湿法浸渍法制备β-环糊精修饰的Ni/SFCC催化剂（简称Ni/SFCC-CD催化剂）,考察其对C₉石油树脂的催化加氢性能。通过BET比表面积测试、H₂程序升温还原、X射线光电子能谱等手段对催化剂的物相结构进行表征,研究β-环糊精的作用机理及其对催化剂加氢性能的影响。研究结果表明:在反应温度为260℃、反应压力为7 MPa、反应时间为2.0 h的最优条件下,采用Ni/SFCC-CD催化C₉石油树脂加氢,可制得溴值为1.45 gBr/（100 g）、色号（加纳德）小于1的水白色氢化C₉石油树脂,催化剂循环使用4次后仍保持良好活性;β-环糊精的作用机理是:β-环糊精与硝酸镍产生络合作用,抑制硝酸镍的分解、控制NiO的结晶过程和增强活性组分Ni与载体之间的相互作用力,从而提高了Ni/SFCC-CD的催化活性和稳定性。更多还原

【Abstract】 A novel nickel-based catalyst Ni/SFCC-CD was prepared by wet impregnation of nickel nitrate using spent FCC catalyst（SFCC）as support and β-cyclodextrin as metal chelating agent and evaluated its catalytic activity for C₉ petroleum resin hydrogenation. The physicochemical properties of the catalyst were characterized by BET,H₂-TPR,and XRD techniques to investigate the action mechanism of β-cyclodextrin and its effect on hydrogenation performance. The results showed that the water-white hydrogenated C₉ petroleum resin could be produced with bromine number of 1.45 gBr/（100 g） and the Gardner color number less than 1 at a temperature of 260 ℃,a pressure of 7 MPa,and a reaction time of 120 min. The Ni/SFCC-CD remained good activity after 4 cycles. The complexation of β-cyclodextrin with nickel nitrate inhibits the decomposition rate of nickel nitrate,controls the crystallization process of NiO and enhances the interaction between the active component Ni and the carrier,thus improving the catalytic activity and stability of Ni/SFCC-CD.更多还原