| 铈插层黏土负载铁催化剂在H2S选择性催化氧化过程中催化性能的研究 |
| 摘要点击 1430 全文点击 868 投稿时间：2013-09-29 修订日期：2013-11-14 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 插层黏土 氧化铈 催化剂 H2S 催化氧化 |
| 英文关键词 intercalated clay cerium oxide catalyst hydrogen sulfide catalytic oxidation |
|
| 中文摘要 |
| 合成了铈插层的Laponite黏土材料（Ce-Lap），并以此材料为载体，分别负载质量分数为3%、5%、8%、10%的Fe制备Fe/Ce-Lap催化剂，通过XRD、氮气吸脱附曲线、XRF、TG、FT-IR、O2-TPD、H2-TPR、XPS等手段，对催化剂的物理化学性质进行了表征测试，并考察了催化剂在H2S选择性催化氧化反应过程中的活性. 结果表明，5%的Fe/Ce-Lap在180℃时表现出最好的催化活性，能达到96%的硫产率，这归因于Fe与Ce之间的相互作用，改善了Fe3+的氧化还原能力. 此外，较高的氧吸附能力及铁物种的高分散度促进了氧化反应的进行. |
| 英文摘要 |
| A series of Fe/CeO2-intercalated clay catalysts were synthesized successfully, the physicochemical properties of the catalysts were characterized by XRD, BET, XRF, TG, FT-IR, O2-TPD, H2-TPR and XPS methods. The catalytic performances for selective catalytic oxidation of H2S were further investigated,all catalysts exhibited high catalytic activities. Among them 5% Fe/Ce-Lap presented the best activity at 180℃ and the maximum sulfur yield was up to 96% due to the interaction between iron and cerium, which improved the redox ability of Fe3+. Moreover, the strong oxygen adsorption capacity and the well dispersion of iron species improved the catalytic performance efficiently. |
