| 谢敏慧,齐学振,刘学军.SAPO-11的制备及十八烷异构性能研究[J].分子催化,2016,30(6):515-522 |
| SAPO-11的制备及十八烷异构性能研究 |
| Preparation of SAPO-11 and Study on Heterogeneous Performance of Octadecane |
| 投稿时间：2016-08-11 修订日期：2016-10-21 |
| DOI： |
| 中文关键词: 水热合成 SAPO-11 硅铝比 加氢异构 十八烷 |
| 英文关键词:水热合成 SAPO-11 硅铝比 加氢异构 十八烷 |
| 基金项目: |
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| 中文摘要: |
| 采用水热法合成出不同硅铝比的SAPO-11分子筛，负载Pt后的催化剂在固定床反应器上对正十八烷进行临氢异构化反应。采用XRD、BET、SEM、TEM和NH3-TPD对载体及催化剂进行表征。考察了Si含量的变化对正十八烷临氢异构性能的影响。通过改变温度、压力、空速以及氢油比等反应参数，考察了硅铝比为0.3的0.5%Pt/SAPO-11催化剂的异构化性能。确定最佳反应条件：在温度为340 ℃、压力为3 MPa、空速为1 h-1和氢油比为1000：1时，正十八烷转化率可达73.1%，煤气比为1.44，异构率为64.2%。 |
| 英文摘要: |
| In this work, different Si/Al ratio of SAPO-11 molecular sieves were prepared by the method of hydrothermal synthesis. After Pt loaded on SAPO-11, n-octadecane was determined as a model compound and the reaction of hydroisomerization was carried out in a fixed bed reactor. The structure and properties were characterized by XRD,BET,SEM,TEM and NH3-TPD. The effects of different Si content on synthesis of SAPO-11 molecular sieves were studied when Si/Al ratio was 0.3,the isomerization performance of 0.5%Pt/SAPO-11 was investaged by changing the temperature, pressure, space velocity and the hydrogen oil ratio .The optimum reaction conditions were found that under the conditions of temperature of 340 ℃,pressure of 3 MPa,LHSV of 1 h-1,hydrogen-oil ratio of 1000/1,oil yield had reached 73.1% and the selectivity of isomers was 64.2%,along with middle/light distillates ratio of 1.44. |
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