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氧化铝和磷改性对非负载型催化剂结构和加氢脱硫性能的影响

曾鹤 ,  施岩 ,  李鹤鸣 ,  王晨 ,  王海彦

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引用本文: 曾鹤, 施岩, 李鹤鸣, 王晨, 王海彦. 氧化铝和磷改性对非负载型催化剂结构和加氢脱硫性能的影响[J]. 应用化学, 2016, 33(8): 951-959. doi: 10.11944/j.issn.1000-0518.2016.08.150425 shu
Citation:  ZENG He, SHI Yan, LI Heming, WANG Chen, WANG Haiyan. Effect of Aluminium Oxide and Phosphorus Modification on Structure and Hydrodesulfurization Performance of Unsupported Catalysts[J]. Chinese Journal of Applied Chemistry, 2016, 33(8): 951-959. doi: 10.11944/j.issn.1000-0518.2016.08.150425 shu

氧化铝和磷改性对非负载型催化剂结构和加氢脱硫性能的影响

  • 1.

    辽宁石油化工大学化学化工与环境学部石油化工学院 辽宁 抚顺 113001

    • 通讯作者: 王海彦,教授; Tel/Fax:024-56860958; E-mail:fswhy@126.com; 研究方向:清洁燃料生产新工艺
  • 基金项目:

    国家自然基金（21076100）资助项目 

摘要: 采用共沉淀法制备了Ni-Mo非负载型加氢脱硫催化剂，利用X射线粉末衍射分析（XRD）、低温N2吸附分析（BET）、红外光谱分析（Py-IR 、FT-IR）、氢气程序升温还原（H2-TPR）、程序升温脱附分析（NH3-TPD）、拉曼光谱分析（LRS）和气相色谱分析（GC-PFPD）等技术手段，考察了Al2O3和磷对催化剂结构性能的影响。研究结果表明，Al2O3能够增加催化剂的孔容、孔径、比表面积，增加Lewis（L）酸酸量的同时形成了Brnsted（B）酸位。在含有Al2O3的催化剂中加入磷会形成Al-P-O结构，阻止NiAl2O4尖晶石结构的形成，减小活性组分与Al2O3之间的作用；同时磷能够减少四面体配位Mo物种数量，增加八面体配位Mo物种数量。催化剂具有较长的使用寿命；磷的加入使催化剂酸性由强酸性变成弱酸性，加氢脱硫活性由94%增加到99.8%。在温度280℃，压力4.0 MPa、液时空速2.0 h-1和氢油体积比500条件下,可将催化裂化柴油中的4-甲基二苯并噻吩（4-MDBT）、4,6-二甲基二苯并噻吩（4,6-DMDBT）和2,4,6-三甲基二苯并噻吩（2,4,6-TMDBT）深度脱除，硫含量由3950 μg/g降至7.9 μg/g。

English

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  • 收稿日期:  2015-12-01
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