| 季生福,关月明,吴平易.柠檬酸络合法制备Ni2P/SBA-15催化剂及加氢脱硫性能[J].分子催化,2012,(3):197-203 |
| 柠檬酸络合法制备Ni2P/SBA-15催化剂及加氢脱硫性能 |
| Preparation of Ni2P/SBA-15 Catalysts Using Citrate Acid Method and Its Hydrodeslfurization Performance |
| 投稿时间：2012-03-27 修订日期：2012-04-28 |
| DOI： |
| 中文关键词: 柠檬酸、磷化镍、SBA-15、二苯并噻吩、加氢脱硫 |
| 英文关键词:Citric acid Nickel phosphide SBA–15 Dibenzothiophene Hydrodesulfurization |
| 基金项目:国家重点基础研究发展计划（973计划） |
|
| 摘要点击次数: 2380 |
| 全文下载次数: 3261 |
| 中文摘要: |
| 以介孔分子筛SBA-15为载体， Ni组分采用柠檬酸（CA）络合法，制备了Ni2P质量含量为25%-45%、P/Ni为0.8、CA/Ni为0-1.5的一系列CA-Ni2P/SBA-15催化剂。利用XRD和N2吸脱附表征了催化剂结构，以二苯并噻吩(DBT)为模型硫合物，对催化剂加氢脱硫(HDS)性能进行了评价，考察了CA/Ni比对催化剂结构和反应性能的影响。结果表明，催化剂仍然保持有介孔结构，催化活性物相为Ni2P。反应温度为300℃-340℃时，Ni2P含量和CA/Ni比都对催化剂的性能有一定的影响，反应温度在360℃以上时，Ni2P含量和CA/Ni比对催化剂性能的影响不明显。Ni2P含量为35%、CA/Ni比为1.0的催化剂具有最好的HDS活性，DBT的转化率可达98％。 |
| 英文摘要: |
| A series of CA-Ni2P/SBA-15 catalysts, which the SBA-15 was as support, the citrate acid (CA) was as the chelating agent of Ni, the Ni2P content was from 25% to 45%, the molar ratio of Ni/P was 0.8 and the molar ratio of CA/Ni from 0 to 1.5, were prepared. The structure of the catalysts was characterized by X-ray diffraction (XRD) and N2 adsorption/desorption technique. The catalytic activities of the catalysts for the hydrodesulfurization (HDS) of dibenzothiophene (DBT) were evaluated. The effects of the CA/Ni molar ratio on the structure and catalytic activities of the catalysts were investigated. The results indicated that the mesoporous structure of SBA-15 was still preserved in the CA-Ni2P/SBA-15 catalysts. The crystal phase of the catalysts was Ni2P. When the reaction temperature ranged from 300℃ to 340℃, the performance of catalysts was impacted by the Ni2P content and the CA/Ni molar ratio. However, the effects of the Ni2P content and the CA/Ni molar ratio on the performance of the catalysts was not obvious when the reaction temperature was over 360℃. The CA-Ni2P/SBA-15 catalyst with 35% Ni2P and the CA/Ni molar ratio as 1.0 exhibits the best catalytic performance for HDS. The conversion of the DBT can reach 98%. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
