| 滕阳,王安杰,李翔,段新平,胡永康.MCM-41负载的Ni 2P、MoP和WP加氢脱硫性能比较[J].,2010,(5):643-648 |
| MCM-41负载的Ni 2P、MoP和WP加氢脱硫性能比较 |
| Comparison of hydrodesulfurization performances of Ni 2P, MoP and WP supported by MCM-41 |
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| DOI：10.7511/dllgxb201005004 |
| 中文关键词: MCM-41 Ni 2P MoP WP 加氢脱硫 |
| 英文关键词: MCM-41 Ni 2P MoP WP hydrodesulfurization |
| 基金项目:国家自然科学基金资助项目(重点项目20333030；20773020)；国家自然科学基金青年基金资助项目(20503003). |
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| 中文摘要: |
| 通过原位程序升温还原方法制备了以MCM-41负载的Ni 2P、MoP和WP催化剂，并用XRD和CO化学吸附对催化剂进行了表征．以质量分数0.8%的二苯并噻吩(DBT)的十氢萘溶液为模型化合物，考察了3种磷化物催化剂的加氢脱硫(HDS)反应性能．结果表明，Ni 2P/MCM-41催化剂在DBT的HDS反应中表现出最佳的反应性能，具有最高的反应速率常数和 TOF ，而WP/MCM-41最低．DBT在3种磷化物催化剂上的HDS反应路径随温度的变化表现出不同的趋势．H 2S的存在显著抑制了Ni 2P/MCM-41催化剂加氢路径，从而强烈抑制了其HDS反应活性．MoP/MCM-41表现出相对较好的耐硫性能． |
| 英文摘要: |
| MCM-41-supported Ni 2P, MoP and WP catalysts were prepared by an in-situ temperature programmed reduction method from their oxide precursors and characterized by XRD and CO chemisorption. The hydrodesulfurization (HDS) performances of the three catalysts were evaluated using a model fuel containing 0.8% dibenzothionphene (DBT) in decalin. The results indicate that MCM-41-supported Ni 2P catalyst shows the highest HDS performance, exhibiting the highest HDS reaction rate constant and \%TOF\%, while WP/MCM-41 is the lowest. The HDS reaction routes over the three catalysts exhibit different trends towards different temperatures. The presence of H 2S in the feed significantly suppresses the hydrogenation pathway of Ni 2P/MCM-41, and leads to a drastic decrease in the HDS activity. MoP/MCM-41 exhibits better sulfur resistance compared with other catalysts. |
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