导向剂法合成多级孔SAPO-11分子筛及其对烷烃加氢异构化的性能

›› 2020, Vol. 22 ›› Issue (4): 85-92.

• Catalyst Research • 上一篇下一篇

导向剂法合成多级孔SAPO-11分子筛及其对烷烃加氢异构化的性能

孟媛¹,王海彦¹,SUN Na¹,²,杨占旭³,³,王钰佳¹,³

1. 辽宁石油化工大学
2. College of Chemical Engineering,China University of Petroleum, Changjiang Road 66, 266580 Qingdao, China,
3.

收稿日期:2020-02-26 修回日期:2020-03-22 出版日期:2020-12-30 发布日期:2020-12-30
通讯作者: 王钰佳 E-mail:fsyzww@126.com
作者简介:2020-05-13
基金资助:
基于空间限域内可控制备氮掺杂钼基复合材料及其性能研究;多级孔H?催化剂的合成及其苯加氢烷基化制备环己基苯性能研究;纳米片状SAPO-34分子筛合成及MTO催化性能研究

Synthesis of Hierarchical SAPO-11 Molecular Sieve by Directing Agent Method for n-Alkane Hydroisomerization

Yuan Meng¹,Wang Haiyan²,Na SUN³,⁴,xu zhanyang²,²,Wang Yujia²,⁵

1. Liaoning Shihua University
2.
3. Liaoning Shihua University,
4. aCollege of Chemical Engineering,China University of Petroleum, Changjiang Road 66, 266580 Qingdao, China,
5. 辽宁石油化工大学

Received:2020-02-26 Revised:2020-03-22 Online:2020-12-30 Published:2020-12-30
Contact: Wang Yujia E-mail:fsyzww@126.com
Supported by:
基于空间限域内可控制备氮掺杂钼基复合材料及其性能研究;多级孔H?催化剂的合成及其苯加氢烷基化制备环己基苯性能研究;纳米片状SAPO-34分子筛合成及MTO催化性能研究

摘要/Abstract

摘要： Silicoaluminophosphates SAPO-11 molecular sieves with small particle size and hierarchical pores were synthesized using a directing agent method. The effect of crystallization time on the crystal structure, morphology, pore structure properties and acid properties of SAPO-11 molecular sieves were investigated. The results of XRD, SEM, BET and NH3-TPD showed that the SAPO-11 molecular sieves with fine and uniform morphology could be synthesized in a shorter crystallization time used the directing agent method, which just unlike the SAPO-11 molecular sieves synthesized with the conventional method. With the crystallization time increased, the particle size of SAPO-11 molecular sieve was significantly reduced, and the mesoporous structure (intercrystalline pore) was generated between the particles. Furthermore, the external specific surface area and the total specific surface area reached 81.7 m2g-1 and 192.0 m2g-1, respectively, which effectively reduce the pore mass transfer resistance, significantly increase the number of acid active sites. The results of n-dodecane hydroisomerization revealed that the Pt/SAPO-11 prepared with the novel method exhibited higher catalytic activity and better hydroisomerization selectivity than the Pt/SAPO-11 synthesized by conventional hydrothermal method. Thus, the small particle molecular sieve has promising industrial applications as catalyst support.

关键词: directing agent method, small particle, SAPO-11, mesoporous structure, hydroisomerization

孟媛王海彦 SUN Na 杨占旭王钰佳. 导向剂法合成多级孔SAPO-11分子筛及其对烷烃加氢异构化的性能[J]. , 2020, 22(4): 85-92.

Yuan Meng Wang Haiyan Na SUN xu zhanyang Wang Yujia. Synthesis of Hierarchical SAPO-11 Molecular Sieve by Directing Agent Method for n-Alkane Hydroisomerization[J]. , 2020, 22(4): 85-92.

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导向剂法合成多级孔SAPO-11分子筛及其对烷烃加氢异构化的性能

Synthesis of Hierarchical SAPO-11 Molecular Sieve by Directing Agent Method for n-Alkane Hydroisomerization

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