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Citation: WANG Hong-Bin, SHI Jin-Yu, NING Ping, YANG Min, FENG Gui-Quan. Solid Acid Catalyst Loaded on Bentonite and Its Catalysis of the Synthesis of Acetylsalicylate[J]. Chinese Journal of Applied Chemistry, ;2009, 26(2): 182-186. shu

Solid Acid Catalyst Loaded on Bentonite and Its Catalysis of the Synthesis of Acetylsalicylate

WANG Hong-Bin ^a,b ,
SHI Jin-Yu ^b ,
NING Ping ^a,, ,
YANG Min ^a,b ,
FENG Gui-Quan ^b

1.
a School of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093;
2.
b School of Chemistry and Bio-Science, Yunnan Nationalities University, Kunming

Corresponding author: NING Ping,
Received Date: 3 December 2007
Available Online: 8 May 2008
Fund Project: 云南省教育厅科研基金重点项目(07Z31160) (07Z31160)

Solid acid catalysts loaded on bentonite were prepared through anhydrous impregnation,and acetylsalicylate synthesis was used as a probe to inspect the influence of the preparation conditions of the catalysts and reaction conditions of acetylsalicylate synthesis on the catalytic properties.The catalysts were characterized by XRD,DTA,and iconic acid test.The result showed that the solid acid catalysts had the best catalytic capability after soaked in 10% HCl for overnight,loaded with 5.0 m mol/g ZnCl₂ and 4.0 mmol/g CuCl₂,and baked at a temperature of 550 ℃ for 3 h.And the preparation conditions of acetylsalicylate synthesis were as follows:the optimum temperature was 80~90 ℃;the optimum time was 1 h;the ratio of salicylic to acetic acid was 1:2,and the quantity of solid acid was 5% that of salicylic acid.Under these conditions,the yield of acetylsalicylate reached 96.6%,and the solid acid catalysts can replace sulfuric acid and can be reused.
- bentonite,
- preparation,
- loaded solid acid,
- acetylsalicylate,
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