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Comparisons of catalysts containing micro-sized and nano-sized zeolite beta particles identified no significant differences in pore structure, crystalline phases, or interactions between metals and supports. The W-Ni catalysts presented much longer average slab lengths and greater average numbers of slab layers than the Mo-Ni catalysts. The Mo-Ni nano-sized zeolite catalyst had slightly longer slabs and fewer slab layers than the micro-sized zeolite, while W-Ni nano-sized zeolite showed much shorter slabs and fewer slab layers. The HDN and HDS activities of the Mo-Ni nano-sized zeolite catalyst were the same as those of the micro-sized zeolite catalysts,and the HDA activity was lower. For W-Ni series catalysts, the HDS,HDN, and HDA activities of the catalyst containing nano-sized zeolite beta were higher than those of the micro-sized zeolite catalyst. The two nano-sized zeolite catalysts gave higher liquid yields in hydrotreating LCO. |
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gter_zhu(金币+22, 翻译EPI+1):谢谢 2010-08-28 20:44:42
| 比较含有微米级和纳米尺寸的β沸石催化剂颗粒可以确定金属与载体的孔隙结构，晶相并无显着差异。目前，W - Ni催化剂比Mo-Ni催化剂拥有更长的平均长度和更多的板层。钼镍纳米沸石催化剂与微米沸石相比，板长稍长，板层较少，而钨镍纳米沸石板长更短和板层更少。钼镍纳米沸石催化剂和微米沸石催化剂对HDN和HDS有同样的活性，对HDA活性较低。 对于钨镍系列催化剂，加氢脱硫，脱氮，含有纳米β沸石催化剂对HDAHDS,HDN, 的活性比微米级高。这两个纳米沸石催化剂在加氢时，会有较高液体的产量。 |
2楼2010-08-27 16:05:19
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