Low-Al zeolite beta as a heterogeneous catalyst in biodiesel production from microwave-assisted transesterification of triglycerides

Yu Yuan Wang, Duu Jong Lee, Bing-Hung Chen

研究成果: Conference article

9 引文 (Scopus)

摘要

In this work microwave and reflux-assisted transesterification of triolein in methanol was carried out with alkaliloaded low-Al Zeolite Beta as catalyst. The results show that the alkali-T reated Zeolite Beta can effectively catalyze transesterification reaction of triglycerides to produce fatty acid ethyl esters (biodiesel), if Zeolite Beta has been properly modified with the alkali ion-exchange process. As a result, the final conversion yield over 90% could be obtained within an hour of reflux reaction. However, the durability of this Na-modified Zeolite Beta still has much room to be improved. In this work, this inferior catalytic durability is overcome by using the low-Al Zeolite Beta with a smaller particle size near 0.5μm. Consequently, for at least eight cycles, cyclic tests of these zeolite catalysts do not result in any significant decrease in catalysis in transesterification reaction. It is inferred that alkali cations existing in defect-sites of low-Al Zeolite Beta can be supplied to the surface of the catalysts during transesterification and enhance the catalysis.

原文English
頁(從 - 到)918-921
頁數4
期刊Energy Procedia
61
DOIs
出版狀態Published - 2014 一月 1
事件6th International Conference on Applied Energy, ICAE 2014 - Taipei, Taiwan
持續時間: 2014 五月 302014 六月 2

指紋

Transesterification
Biodiesel
Microwaves
Catalysts
Catalysis
Durability
Fatty acids
Ion exchange
Esters
Methanol
Positive ions
Particle size
Defects
Triglycerides

All Science Journal Classification (ASJC) codes

  • Energy(all)

引用此文

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title = "Low-Al zeolite beta as a heterogeneous catalyst in biodiesel production from microwave-assisted transesterification of triglycerides",
abstract = "In this work microwave and reflux-assisted transesterification of triolein in methanol was carried out with alkaliloaded low-Al Zeolite Beta as catalyst. The results show that the alkali-T reated Zeolite Beta can effectively catalyze transesterification reaction of triglycerides to produce fatty acid ethyl esters (biodiesel), if Zeolite Beta has been properly modified with the alkali ion-exchange process. As a result, the final conversion yield over 90{\%} could be obtained within an hour of reflux reaction. However, the durability of this Na-modified Zeolite Beta still has much room to be improved. In this work, this inferior catalytic durability is overcome by using the low-Al Zeolite Beta with a smaller particle size near 0.5μm. Consequently, for at least eight cycles, cyclic tests of these zeolite catalysts do not result in any significant decrease in catalysis in transesterification reaction. It is inferred that alkali cations existing in defect-sites of low-Al Zeolite Beta can be supplied to the surface of the catalysts during transesterification and enhance the catalysis.",
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AU - Wang, Yu Yuan

AU - Lee, Duu Jong

AU - Chen, Bing-Hung

PY - 2014/1/1

Y1 - 2014/1/1

N2 - In this work microwave and reflux-assisted transesterification of triolein in methanol was carried out with alkaliloaded low-Al Zeolite Beta as catalyst. The results show that the alkali-T reated Zeolite Beta can effectively catalyze transesterification reaction of triglycerides to produce fatty acid ethyl esters (biodiesel), if Zeolite Beta has been properly modified with the alkali ion-exchange process. As a result, the final conversion yield over 90% could be obtained within an hour of reflux reaction. However, the durability of this Na-modified Zeolite Beta still has much room to be improved. In this work, this inferior catalytic durability is overcome by using the low-Al Zeolite Beta with a smaller particle size near 0.5μm. Consequently, for at least eight cycles, cyclic tests of these zeolite catalysts do not result in any significant decrease in catalysis in transesterification reaction. It is inferred that alkali cations existing in defect-sites of low-Al Zeolite Beta can be supplied to the surface of the catalysts during transesterification and enhance the catalysis.

AB - In this work microwave and reflux-assisted transesterification of triolein in methanol was carried out with alkaliloaded low-Al Zeolite Beta as catalyst. The results show that the alkali-T reated Zeolite Beta can effectively catalyze transesterification reaction of triglycerides to produce fatty acid ethyl esters (biodiesel), if Zeolite Beta has been properly modified with the alkali ion-exchange process. As a result, the final conversion yield over 90% could be obtained within an hour of reflux reaction. However, the durability of this Na-modified Zeolite Beta still has much room to be improved. In this work, this inferior catalytic durability is overcome by using the low-Al Zeolite Beta with a smaller particle size near 0.5μm. Consequently, for at least eight cycles, cyclic tests of these zeolite catalysts do not result in any significant decrease in catalysis in transesterification reaction. It is inferred that alkali cations existing in defect-sites of low-Al Zeolite Beta can be supplied to the surface of the catalysts during transesterification and enhance the catalysis.

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