scholarly journals Synthesis of Solid Acid Catalyst from Fly Ash for Eugenol Esterification

2019 ◽  
Vol 14 (3) ◽  
pp. 683 ◽  
Author(s):  
Nur Hidayati ◽  
Titik Pujiati ◽  
Elfrida B. Prihandini ◽  
Herry Purnama
Keyword(s):  
Fly Ash ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Silica Content ◽  
Bet Surface Area ◽  
Characterization Methods ◽  
Highly Active ◽  
Eugenyl Acetate ◽  
Physical And Chemical

A series of fly ash-based heterogeneous acid catalysts were prepared by chemical and thermal treatment. Fly ash was chemically activated using sulfuric acid and followed by thermal activation. Characterization methods of XRD, BET, SEM-EDX, and the performance in esterification of eugenyl acetate production was carried out to reveal the physical and chemical characteristics of prepared catalysts. Activated catalyst showed high silica content (96.5%) and high BET surface area of 70 m2.g-1. The catalyst was proven to be highly active solid acid catalyst for liquid phase esterification of eugenol with acetic acid yielding eugenyl acetate. A yield of 43-48% was obtained with activated fly ash catalysts for 90 minutes reaction. These catalysts may replace beneficially the conventional homogenous liquid acid to the eco-friendly heterogeneous one. Copyright © 2019 BCREC Group. All rights reserved 

MoO3/ZrO2 as a Stable, Reusable, and Highly Active Solid Acid Catalyst for Polyester Polyol Synthesis

2013 ◽  
Vol 42 (10) ◽  
pp. 1314-1316 ◽  
Author(s):  
Hironobu Oki ◽  
Tsuyoshi Morita ◽  
Kiyotaka Nakajima ◽  
Michikazu Hara
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Polyol Synthesis ◽  
Polyester Polyol ◽  
Highly Active

Acid Activated fly Ash, as a Novel Solid Acid Catalyst for Esterification of Acetic Acid

2011 ◽  
Vol 3 (4) ◽  
pp. 37-39 ◽  
Author(s):  
Anita Sharma ◽  
◽  
Stuti Katara ◽  
Sakshi Kabra ◽  
Ashu Rani
Keyword(s):  
Acetic Acid ◽  
Fly Ash ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst

scholarly journals Highly Active Mesoporous Nb-W Oxide Solid-Acid Catalyst

2010 ◽  
Vol 49 (6) ◽  
pp. 1128-1132 ◽  
Author(s):  
Caio Tagusagawa ◽  
Atsushi Takagaki ◽  
Ai Iguchi ◽  
Kazuhiro Takanabe ◽  
Junko N. Kondo ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Highly Active

New Silica Supported HClO4 as Efficient Catalysts for Estolide Synthesis from Oleic Acid

2010 ◽  
Vol 173 ◽  
pp. 140-145 ◽  
Author(s):  
Nor Asikin Mohamad Nordin ◽  
Nadia Farhana Adnan ◽  
Aznira Alias ◽  
Wan Nor Roslam Wan Isahak ◽  
Jumat Salimon ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Perchloric Acid ◽  
Solid Acid ◽  
Condensation Reaction ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Catalytic Performance ◽  
Area Measurement ◽  
Bet Surface Area ◽  
Experimental Findings

The syntheses of estolides via condensation reaction of oleic acid were investigated using heterogenous catalysts. In this study HClO4 is supported onto suitable support to make it environmentally friendly. A series of solid acid catalyst containing 5-45 % of perchloric acid supported onto silica was synthesized and characterized using XRD, BET surface area measurement, TEM and XPS surface analysis. Silica modified with perchloric acid was found to be efficient and environmentally benign solid acid catalyst for estolide synthesis. The reaction was performed at 70 oC for 10 hours to give oleic-oleic monoestolide acid (m/z 563.51 as M-H)-. Based on the experimental findings above, optimum catalytic performance was with 15 % HClO4 loading onto SiO2 to give 98.98 % conversion of the oleic acid with 63.98 % oleic-oleic monoestolide acid selectivity.

Sulfated mesoporous Au/TiO2 spheres as a highly active and stable solid acid catalyst

2012 ◽  
Vol 22 (26) ◽  
pp. 13216 ◽  
Author(s):  
Cheng Chao Li ◽  
Yan Ping Zheng ◽  
Tai Hong Wang
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Highly Active
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