柠檬酸处理对一种Y型分子筛催化剂再生的影响  

Effect of Citric Acid Treatment on Regeneration of Y Zeolite Catalyst

作　　者：吕建辉 王晓莉[2] 曲波[3] 李菁[1] 陶文晶[1] 邓广金[1] 赵胤[1] 于海波[1] LV Jianhui;WANG Xiaoli;QU Bo;LI Jing;TAO Wenjing;DENG Guangjin;ZHAO Yin;YU Haibo(Research Institute of Jilin Petrochemical Company,Petrochina,Jilin 132021,China;Organic Synthesis Plant of Jilin Petrochemical Company,Petrochina,Jilin 132021,China;Refinery of Jilin Petrochemical Company,Petrochina,Jilin 132021,China)

机构地区：[1]中国石油吉林石化公司研究院,吉林吉林132021 [2]中国石油吉林石化公司有机合成厂,吉林吉林132021 [3]中国石油吉林石化公司炼油厂,吉林吉林132021

出　　处：《化学反应工程与工艺》2019年第3期258-265,共8页Chemical Reaction Engineering and Technology

基　　金：吉林省科技厅重点科技研发项目(专项支持)(20180201101GX)。

摘　　要：以柠檬酸处理和焙烧相结合的方法,再生了一种工业失活Y型分子筛催化剂,用于苯和多乙苯的烷基转移催化反应。通过N2物理吸附(BET)、X射线衍射(XRD)、X射线荧光(XRF)、热重分析(TG)及NH3程序升温脱附(NH3-TPD)等分析表征手段,研究了不同再生条件对失活Y分子筛的影响。结果表明,采用柠檬酸溶液对失活催化剂处理8 h,并在500℃焙烧4 h,再生催化剂的活性最好,催化乙苯收率大于30%,且在227 h的寿命评价中表现出良好的稳定性。An industrially deactivated Y-type zeolite catalyst was regenerated by a combination method of citric acid treatment and calcination for the transalkylation catalytic reaction of benzene and polyethylbenzene.The effects of different regeneration conditions on the deactivated Y zeolites were studied by means of N2 physical adsorption(BET),X-ray diffraction(XRD),X-ray fluorescence(XRF),thermogravimetric analysis and NH3 temperature programmed desorption(NH3-TPD)respectively.The results showed that the activity of the regenerated catalyst was the best with the yield of ethylbenzene more than 30%under the regeneration conditions of citric acid solution treatment for 8 h and calcined at 500℃for 4 h.The regenerated catalyst showed good stability for the 227 h life time evaluation.

关 键 词：Y型分子筛 再生 柠檬酸处理 

分 类 号：O643.36+2[理学—物理化学]