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.
|頁（從 - 到）||918-921|
|出版狀態||Published - 2014|
|事件||6th International Conference on Applied Energy, ICAE 2014 - Taipei, Taiwan|
持續時間: 2014 5月 30 → 2014 6月 2
All Science Journal Classification (ASJC) codes