β-环糊精修饰Ni/SFCC强化C9石油树脂催化加氢性能

石油炼制与化工 ›› 2020, Vol. 51 ›› Issue (6): 62-71.

β-环糊精修饰Ni/SFCC强化C9石油树脂催化加氢性能

何志山¹,韦小杰^1,2,陈小鹏^1,2,王琳琳^1,2,梁杰珍^1,2,蒋明¹,农韦健³

1.广西大学化学化工学院
2.广西石油化工资源加工及过程强化技术重点实验室
3.中国科技开发院广西分院

收稿日期:2019-12-13 修回日期:2020-01-06 出版日期:2020-06-12 发布日期:2020-06-23
通讯作者: 韦小杰 E-mail:wxjgxu@gxu.edu.cn
基金资助:
基于跨临界反应系统的松脂与C5石油树脂共混催化加氢改性;跨临界CO2强化石油树脂催化加氢脱硫耦合反应机理及其热力学安全特性

β-CYCLODEXTRIN MODIFIED Ni/SFCC TO ENHANCE CATALYTIC HYDROGENATION OF C9 PETROLEUM RESIN

Received:2019-12-13 Revised:2020-01-06 Online:2020-06-12 Published:2020-06-23
Supported by:

摘要/Abstract

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。

关键词: C9石油树脂, 催化裂化, 废催化剂, β-环糊精, 湿法浸渍, 催化加氢

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（β-CD） 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-CD 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.

Key words: C9 Petroleum resin, catalytic cracking, spent catalyst, β-cyclodextrin, wet impregnation, hydrogenation

中图分类号:

何志山韦小杰陈小鹏王琳琳梁杰珍蒋明农韦健. β-环糊精修饰Ni/SFCC强化C9石油树脂催化加氢性能[J]. 石油炼制与化工, 2020, 51(6): 62-71.

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