Preparation of Core-Shell Silica - 12-Tungstophosphoricacid Nanoparticles for Acylation of Aromatics

2013 ◽  
Vol 706-708 ◽  
pp. 219-223
Author(s):  
Hsiu Ling Hsu ◽  
Rosilda Selvin ◽  
L. Selva Roselin
Keyword(s):  
Liquid Phase ◽  
High Activity ◽  
Solid Acid ◽  
Coke Formation ◽  
Solid Acid Catalysts ◽  
Core Shell ◽  
Acid Catalysts ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Enhanced Selectivity

A variety of solid acid catalysts especially 12-Tungstophosphoricacid (DTP) supported on silica has been reported for the acylation of anisole, veratrole and toluene. However, the activity of this catalyst is susceptible to coke formation or poor activity. This paper reports the novelties of steam treated SiO2-DTP core-shell nanoparticles, which exhibits tremendous stability, high activity and enhanced selectivity in the liquid-phase acylation of anisole, veratrole and toluene as compared to conventional DTP supported on silica.

Preparation of nickel–silver core–shell nanoparticles by liquid-phase reduction for use in conductive paste

2015 ◽  
Vol 10 (17) ◽  
pp. 1347-1356 ◽  
Author(s):  
Jun Jie Jing ◽  
Jimin Xie ◽  
Gao Yuan Chen ◽  
Wen Hua Li ◽  
Ming Mei Zhang
Keyword(s):  
Liquid Phase ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Nickel Silver ◽  
Phase Reduction ◽  
Core Shell Nanoparticles ◽  
Silver Core

Sulfonic acid-functionalized core-shell Fe3O4@carbon microspheres as magnetically recyclable solid acid catalysts

2020 ◽  
Author(s):  
Chenyi Yuan ◽  
Xiqing Wang ◽  
Xuanyu Yang ◽  
Abdulaziz A. Alghamdi ◽  
Fahad A. Alharthi ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Core Shell ◽  
Acid Catalysts ◽  
Carbon Microspheres

The hydrophilic/hydrophobic effect of porous solid acid catalysts on mixed liquid phase reaction of esterification

2009 ◽  
Vol 10 (13) ◽  
pp. 1734-1737 ◽  
Author(s):  
Hong Liu ◽  
Nianhua Xue ◽  
Luming Peng ◽  
Xuefeng Guo ◽  
Weiping Ding ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Solid Acid ◽  
Hydrophobic Effect ◽  
Porous Solid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Phase Reaction ◽  
Liquid Phase Reaction

Liquid-phase veratrole acylation and toluene alkylation over WOx/ZrO2 solid acid catalysts

2006 ◽  
Vol 247 (1-2) ◽  
pp. 58-64 ◽  
Author(s):  
Ankur Bordoloi ◽  
Nevin T. Mathew ◽  
Biju M. Devassy ◽  
S.P. Mirajkar ◽  
S.B. Halligudi
Keyword(s):  
Liquid Phase ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Toluene Alkylation
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