کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6474788 | 1424965 | 2017 | 9 صفحه PDF | دانلود رایگان |
- FAU-type zeolite prepared from hydrothermal treatment of shale rock.
- Preparation conditions varied systematically to give high purity zeolite.
- Activity of FAU-type zeolite comparable with commercial zeolite Y in oleic acid esterification.
FAU-type zeolite was prepared using Irish shale rock and tested as a catalyst in the liquid-phase esterification of oleic acid (a model test reaction for biodiesel production). A systematic study was conducted (over the stated preparation ranges) by varying the water:shale ratio (4:1-15:1 by mass), and mixing (1-24Â h), aging (6-48Â h) and hydrothermal treatment times (6-72Â h) to determine the optimal parameters. XRD confirmed that the product purity was highly dependent on the experimental conditions used. The BET surface area of the calcined FAU-type zeolite was 571Â m2Â gâ1 and its crystal purity was comparable to that of a commercial zeolite Y. The prepared zeolite was catalytically active in the esterification of oleic acid with ethanol reaching a maximum of 78% conversion after 90Â mins, which is practically identical to that recorded for commercial zeolite Y.
Journal: Fuel - Volume 199, 1 July 2017, Pages 394-402