TY - JOUR
T1 - Cs-tungstosilicic acid/Zr-KIT-6 for esterification of oleic acid and transesterification of non-edible oils for green diesel production
AU - Gopinath, S.
AU - Vinoth Kumar, P.
AU - Sahaya Murphin Kumar, P.
AU - Yasar Arafath, K. A.
AU - Sivanesan, S.
AU - Baskaralingam, P.
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/12/15
Y1 - 2018/12/15
N2 - The development of solid acid catalyst with superior activity is of high interest for the production of biodiesel. In this study, an attempt was made to synthesize a novel solid acid catalyst based on mesoporous cesium exchanged tungstosilicic acid supported on Zr-KIT-6 (Cs-STA/ZK) and Sn-KIT-6 (Cs-STA/SnK). The catalysts were synthesized by hydrothermal method and characterized by various physicochemical techniques such as PXRD, BET, FTIR, SEM, TEM, XPS, and NH3-TPD. The reaction parameters were optimized using Cs-STA/ZK catalyst. The present investigation explores the production of biodiesel from oleic acid and non-edible oils such as castor oil, pongamia oil, and neem oil. Cs-STA/ZK catalyst exhibited the highest conversion in both esterification (99%) of oleic acid and transesterification (98%) of non-edible oils. Further, the recyclability and thermal stability of Cs-STA/ZK catalyst are investigated in detail.
AB - The development of solid acid catalyst with superior activity is of high interest for the production of biodiesel. In this study, an attempt was made to synthesize a novel solid acid catalyst based on mesoporous cesium exchanged tungstosilicic acid supported on Zr-KIT-6 (Cs-STA/ZK) and Sn-KIT-6 (Cs-STA/SnK). The catalysts were synthesized by hydrothermal method and characterized by various physicochemical techniques such as PXRD, BET, FTIR, SEM, TEM, XPS, and NH3-TPD. The reaction parameters were optimized using Cs-STA/ZK catalyst. The present investigation explores the production of biodiesel from oleic acid and non-edible oils such as castor oil, pongamia oil, and neem oil. Cs-STA/ZK catalyst exhibited the highest conversion in both esterification (99%) of oleic acid and transesterification (98%) of non-edible oils. Further, the recyclability and thermal stability of Cs-STA/ZK catalyst are investigated in detail.
KW - Biodiesel
KW - Esterification
KW - Heteropoly acid
KW - KIT-6 (Korean Institute of Technology-6)
KW - Mesoporous
KW - Transesterification
UR - https://www.scopus.com/pages/publications/85050759992
U2 - 10.1016/j.fuel.2018.07.018
DO - 10.1016/j.fuel.2018.07.018
M3 - Article
AN - SCOPUS:85050759992
SN - 0016-2361
VL - 234
SP - 824
EP - 835
JO - Fuel
JF - Fuel
ER -