scholarly journals Preparation, Characterization and Catalytic Properties of SBA-15-SO3H Supported Tungstophosphoric Acid for Esterification Reaction

2017 ◽  
Vol 132 (3-II) ◽  
pp. 1041-1044 ◽  
Author(s):  
B. Erdem ◽  
S. Erdem ◽  
A. Çıtak ◽  
C. Yavru ◽  
R.M. Öksüzoğlu
Keyword(s):  
Catalytic Properties ◽  
Tungstophosphoric Acid ◽  
Esterification Reaction

Physicochemical and catalytic properties of montmorillonites modified with 12-tungstophosphoric acid

2014 ◽  
Vol 95 ◽  
pp. 220-231 ◽  
Author(s):  
Aleksandra Pacuła ◽  
Katarzyna Pamin ◽  
Adam Zięba ◽  
Joanna Kryściak-Czerwenka ◽  
Zbigniew Olejniczak ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Tungstophosphoric Acid

Tungstophosphoric Acid Entrapped on Mesoporous Silica via Sol Gel Technique

2006 ◽  
Vol 11-12 ◽  
pp. 69-72
Author(s):  
Joon Ching Juan ◽  
Yarmo Mohd Ambar ◽  
Jing Chang Zhang
Keyword(s):  
Mesoporous Silica ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Sol Gel ◽  
Chemical Properties ◽  
Acid Catalyst ◽  
Tungstophosphoric Acid ◽  
Esterification Reaction ◽  
Heterogeneous Acid Catalyst ◽  
Gel Technique

The heterogeneous 12-tungstophosphoric acid (HPW) catalyst is becoming important in industrial processes for example in esterification reaction. A novel solid acid catalyst of HPW entrapped on mesoporous silica was synthesized by sol gel technique. Neutral template dodecylamine was introduced to obtain mesopores structure catalyst. The physical and chemical properties of the catalyst were characterized by XRD, nitrogen sorption and FTIR. In conclusion, this new type of mesoporous solid acid catalyst is a very promising heterogeneous acid catalyst for esterification reaction involving bulky molecules such as fatty acid.

Effects of Novel Supports on the Physical and Catalytic Properties of Tungstophosphoric Acid for Alcohol Dehydration Reactions

2008 ◽  
Vol 49 (3-4) ◽  
pp. 259-267 ◽  
Author(s):  
Jose E. Herrera ◽  
Ja Hun Kwak ◽  
Jian Zhi Hu ◽  
Yong Wang ◽  
Charles H. F. Peden
Keyword(s):  
Catalytic Properties ◽  
Tungstophosphoric Acid ◽  
Alcohol Dehydration ◽  
Dehydration Reactions

Assembling of 12-Tungstophosphoric Acid into Amino-Modified SBA-15 and its Catalytic Performance

2012 ◽  
Vol 465 ◽  
pp. 224-228 ◽  
Author(s):  
Hong Qi Guo ◽  
Gong Yan ◽  
Ming Qing Chen ◽  
Shi Rong Liu
Keyword(s):  
Catalytic Performance ◽  
Tungstophosphoric Acid ◽  
Esterification Reaction ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalytic Activities ◽  
Ft Ir ◽  
Adsorption Desorption ◽  
Ft Ir Spectroscopy

12-tungstophosphoric acid was supported on amine-modified SBA-15 by impregnation. The structure and properties of the catalyst were characterized by FT-IR spectroscopy, X-ray diffraction, N2 adsorption-desorption, TEM,Raman spectra and NH3–TPD technology.the result confirmed the mesostructure for SBA-15 and the Keggin structure of the heteropolyanions was preserved. The tungstophosphoric acid can disperse in the pore of the support SBA-15/NH2, but the acidity of the catalyst reduced. The catalytic activities of the catalysts were evaluated for the esterification reaction of ethyl acetoacetate and ethylene glycol .and the catalysts supported on amine-modified SBA-15 show excellent reusability and selectivity.

Characterization of HNbMoO6, HNbWO6 and HTiNbO5 as solid acids and their catalytic properties for esterification reaction

2012 ◽  
Vol 443-444 ◽  
pp. 145-152 ◽  
Author(s):  
J. He ◽  
Q.J. Li ◽  
Y. Tang ◽  
P. Yang ◽  
A. Li ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Solid Acids ◽  
Esterification Reaction
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