Ionic liquid of [BMIM]Cl modified halloysite as matrix for preparation of macroporous RFCC additives
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摘要: 以氯化1-丁基-3-甲基咪唑([BMIM]Cl)离子液体改性埃洛石为基质,以USY为主剂制备了大孔渣油催化裂化(RFCC)助剂,采用XRD、N2吸附、SEM等手段对制备的助剂进行了表征,以济南FCC原料油为原料,以济南平衡剂为主剂在固定流化床(ACE-MODEL R+ MM)上测定了助剂的反应性能。结果表明,在助剂的制备过程中,将离子液体先嫁接到具有开放大孔管状结构的埃洛石上,有效阻止了分子筛碎屑、黏结剂等占据埃洛石的管道及其活性位,高温焙烧去除离子液体后,保留了埃洛石的大孔结构,使制得的助剂具有高的催化裂化活性和良好的汽油选择性。Abstract: The residue fluid catalytic cracking (RFCC) additives containing macropores were prepared with 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) of room temperature ionic liquid modified halloysite as matrix and the USY zeolite as base. X-ray powder diffraction and N2 adsorption-desorption were employed for characterization of the crystallinity and macroporous structure of RFCC additives. The performance of RFCC additives were carried out over a confined fluidized bed fluidized bed (ACE-MODEL R+ MM) with Jinan FCC feedstock and Jinan FCC balance catalyst. It was found that the ionic liquid strongly interacted with the surface hydroxyl of halloysite firstly during the preparation of RFCC additives, and then the strong interaction between ionic liquid and halloysite effectively prevented the binder and USY zeolite to enter the inner of nano-tube of halloysite. At last, the macropores in RFCC additives were produced when the additives were calcinated and the ionic liquid was removed at higher temperature. The resulting macroporous additive exhibited good catalytic cracking activity and high yield of gasoline.
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Key words:
- ionic liquid /
- catalytic cracking /
- halloysite /
- macropores /
- additive
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朱华元, 何鸣元, 宋家庆, 张信. 催化剂的大分子裂化性能与渣油裂化[J]. 炼油设计, 2000, 30(8): 49-53. (ZHU Hua-yuan, HE Ming-yuan, SONG Jia-qing, ZHANG Xin. Reside cracking and bulk molecule cracking abilities of RFCC catalysts[J]. Petroleum Refinery Engineering, 2000, 30(8): 49-53.) 薛青松, 王一萌, 何鸣元. 一种大孔流化催化裂化催化剂及其制备方法: CN, 201210568840.9[P]. 2013-04-24. (XUE Qing-song, WANG Yi-meng, HE Ming-yuan. A method for preparation of macropore FCC catalysts: CN, 201210568840.9[P]. 2013-04-24.) 祁彦平, 陈胜利, 董鹏, 徐克琪, 申宝剑. 新型孔结构渣油催化裂化催化剂[J]. 燃料化学学报, 2006, 34(6): 685-689. (QI Yan-ping, CHENG Sheng-li, DONG Peng, XU Ke-qi, SHEN Bao-jian. Novel macroporous residua FCC catalysts[J]. Journal of Fuel Chemistry and Technology, 2006, 34(6): 685-689.) LUSSIER J, SURLAND J. Catalytic cracking process exploying a zeolite as catalysts and catalyst supports: US, 4836913[P]. 1989-06-06. LUSSIER J. Acid-reacted metakaolin catalyst and catalyst support compositions: US, 4843052[P]. 1989-06-27. 刘从华, 潘仲良, 唐荣华, 张永明, 原所良. 含有改性高岭土的烃类裂化催化剂: CN, 1186105[P]. 1998-07-01. (LIU Cong-hua, PAN Zhong-liang, TANG Rong-hua, ZHANG Yong-ming, YUAN Suo-liang. A catalyst containing modified kaolin clay for hydrocarbon cracking: CN, 1186105[P]. 1998-07-01.) 杨建, 许明德, 范中碧. 高岭土的改性方法: CN, 1195014[P]. 1998-10-07. (YANG Jian, XU Ming-de, FAN Zhong-bi. A technique for the modification of kaolin clay: CN, 1195014[P]. 1998-10-07.) LAU L Y, SANTOS A D S, RONCOLATTO R E, TOREM M A, MORGADO E, O'CONNOR P. Cracking catalyst composition: US, 165083[P]. 2002-06-29. 陈胜利, 董鹏, 祁彦平, 徐克琪. 颗粒模板法合成大孔催化裂化催化剂: CN, 200510082624.3[P]. 2006-09-13. (CHEN Sheng-li, DONG Peng, QI Yan-ping, XU Ke-qi. Macropore FCC catalysts prepared through particl templates: CN, 200510082624.3[P]. 2006-09-13.) MARSH K N, BOXALL J A, LICHTENTHALER R. Room temperature ionic liquids and their mixtures-A review[J]. Fluid Phase Equilibr, 2004, 219(1): 93-98. SELVAM T, MACHOKE A, SCHWIEGER W. Supported ionic liquids on non-porous and porous inorganic materials-A topical review[J]. Appl Catal A: Gen, 2012, 445-446: 92-101. PINO V, AFONSO A M. Surface-bonded ionic liquid stationary phases in high-performance liquid chromatography-A review[J]. Anal Chim Acta, 2012, 714: 20-37. RONG T J, XIAO J K. The catalytic cracking activity of the kaolin-group minerals[J]. Mater Lett, 2002, 57(2): 297-301.
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