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Citation: LI Shu-Min, GUO Hai-Fu, WU Yan-Ni, YAN Peng, LI Xiang, WANG Lan-Ying, ZHOU Qi-Bin. Synthesis of Terpinyl Acetate Catalyzed by Rare Earth Solid Superacid SO₄^2-/ZrO₂-SnO₂-Nd₂O₃[J]. Chinese Journal of Applied Chemistry, ;2009, 26(5): 576-581. shu

Synthesis of Terpinyl Acetate Catalyzed by Rare Earth Solid Superacid SO₄^2-/ZrO₂-SnO₂-Nd₂O₃

LI Shu-Min ^a,b ,
GUO Hai-Fu ^a,, ,
WU Yan-Ni ^a ,
YAN Peng ^a ,
LI Xiang ^a ,
WANG Lan-Ying ^a,b ,
ZHOU Qi-Bin ^c

1.
a School of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing 526061;
2.
b College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot;
3.
c DeQing Shangpin Fine Chemicals Co., Ltd, Deqing

Corresponding author: GUO Hai-Fu,
Received Date: 22 May 2008
Available Online: 8 August 2008
Fund Project: 广东省自然科学基金资助项目(7010338) (7010338)广东省科技厅资助项目(2005B40703004) (2005B40703004)广东林产化工星火技术产业带项目(2006B23003) (2006B23003)

Rare earth solid superacid catalyst SO₂-4/ZrO₂-SnO₂-Nd₂O₃ is prepared by precipitation-co-impre-gnation method. The obtained catalyst if characterized by IR,TG-DTA and XRD,and used to the synthesis of terpinyl acetate.The results show that catalyst SO₄^2-/ZrO₂-SnO₂-Nd₂O₃ has an excellent reactivity and reusability.Factors influencing the esterification are investigated,and the optimum reaction conditions have been found: the molar ratio between terpineol and acetic anhydride is 1.0:1.5,the reaction temperature is 50 ℃ and the reaction time is 5 h,the amount of catalyst is 2% of the mass of terpineol.Under the optimum conditions,the conversion of terpineol is about 93%,the content of terpinyl acetate in the product is 88%.The main reason of the catalyst deactivation is that the active sites are covered by organic materials coming from reacting solution.The catalyst can be regenerated by alcohol washing and drying at 110 ℃ for 12 h.
- rare earth,
- solid superacid,
- SO₄^2-/ZrO₂-SnO₂-Nd₂O₃,
- terpinyl acetate,
- esterification
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Synthesis of Terpinyl Acetate Catalyzed by Rare Earth Solid Superacid SO42-/ZrO2-SnO2-Nd2O3

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Synthesis of Terpinyl Acetate Catalyzed by Rare Earth Solid Superacid SO₄^2-/ZrO₂-SnO₂-Nd₂O₃