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SO2-4/Fe2O3-ZrO2固体超强酸的制备及催化异丁苯酰基化反应

作者:时间:2020-07-28点击数:

全文下载:    202004006.pdf


文章编号: 1672-6987202004-0045-07 DOI 10.16351/j.1672-6987.2020.04.006

 

安灏, 靳满满, 吕志果*

(青岛科技大学 化工学院,山东 青岛 266042

 

摘要: 采用水热合成-浸渍法制备SO2-4/Fe2O3-ZrO2(SFZ)固体超强酸催化剂,并将其用于异丁基苯酰基化反应。采用FT-IRNH3-TPDTGPy-IRXPSN2吸附-脱附手段对制备的SFZ固体超强酸催化剂进行了详细表征。对SFZ催化异丁苯反应进行优化,在n(异丁苯)n(乙酰氯)=11 .2,反应温度70 ℃,反应时间3 h的条件下,SFZ-600(600 ℃焙烧)催化反应中异丁苯转化率达79.09%IBAP收率为60.10%,对比相同条件下制备的SF-600(SO2-4/Fe2O3600 ℃焙烧)催化剂,异丁苯转化率69.25%IBAP收率为53.88%SFZ-600催化剂在循环使用5次过程中,异丁基苯转化率>68.66%IBAP收率>55.09%SF-600催化剂在循环使用5次过程中,异丁基苯转化率>56.67%IBAP收率>40.30%。证明复合型固体超强酸催化剂SFZ可显著提高单一型SF催化剂的活性和稳定性。

关键词: 固体超强酸; 酰基化; 改性; 表征

中图分类号: TQ 207+.2文献标志码: A

引用格式: 安灏, 靳满满, 吕志果. SO2-4/Fe2O3-ZrO2固体超强酸的制备及催化异丁苯酰基化反应\[J\]. 青岛科技大学学报(自然科学版), 2020 414): 45-51.

AN Hao JIN Manman LYU Zhiguo. Synthesis of SO2-4/Fe2O3-ZrO2 and its catalytic activity in acylation of isobutylbenzene\[J\]. Journal of Qingdao University of Science and TechnologyNatural Science Edition), 2020, 41(4) 45-51.

 


Synthesis of SO2-4/Fe2O3-ZrO2 and Its Catalytic Activity in

Acylation of Isobutylbenzene

 

AN Hao JIN Manman LYU Zhiguo

(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

 

Abstract: The SO2-4/Fe2O3-ZrO2(SFZ) solid super acid catalysts were prepared by hydrothermal synthesis-impregnation method and used to catalyze the acylation of isobutylbenzene. Synthesized SFZ catalysts were characterized by FT-IR, NH3-TPD, TG, N2 adsorption-desorptionand, XPS, Py-IR. Under the optimal reaction conditions (reaction time=3 h, reaction temperature=70 , n(acetyl chloride) n(isobutyl benzene)=1.2 1), isobutyl benzene conversion was 79.09% and IBAP yield was 60.10%. Composite solid superacid catalysts SFZ-600(calcined at 600 )catalyst could be recycled 5 runs with isobutyl benzene conversion > 68.66% and IBAP yield > 55.09%.Compared with SF-600(SO2-4/Fe2O3calcined at 600 ), isobutyl benzene conversion was 69.25% and IBAP yield was 53.88%. And it could be recycled 5 runs with isobutyl benzene conversion > 56.67% and IBAP yield > 40.30%. It was proved that composite solid superacid catalyst SFZ can significantly improve the activity and stability of single SF catalyst.

Key words: solid superacid; acylation; modification; characterization



收稿日期:  2019-06-20

基金项目: 国家自然科学基金资助项目(21376128);山东省自然科学基金重大基础研究项目(ZR2017ZC0632.

作者简介: 安灏(1993—),女,硕士研究生.*通信联系人.


 

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