正构烷烃在Pt/SAPO-11催化剂上加氢异构反应性能

doi:10.11949/j.issn.0438-1157.20160895

化工学报 ›› 2016, Vol. 67 ›› Issue (12): 5024-5030.DOI: 10.11949/j.issn.0438-1157.20160895

• 催化、动力学与反应器 • 上一篇下一篇

正构烷烃在Pt/SAPO-11催化剂上加氢异构反应性能

高善彬^1,2, 迟克彬³, 杨晓东², 赵震¹, 胡胜³, 段爱军¹, 于春梅², 孙发民²

1 中国石油大学(北京)理学院重质油国家重点实验室, 北京 102249;
2 中国石油石油化工研究院大庆化工研究中心, 黑龙江大庆 163714;
3 中国石油石油化工研究院, 北京 102206

收稿日期:2016-06-30 修回日期:2016-09-12 出版日期:2016-12-05 发布日期:2016-12-05
通讯作者: 赵震。zhenzhao@cup.edu.cn
基金资助:
中国石油天然气股份有限公司科学研究与技术开发项目（2014B-2508）。

Performance of n-alkane isomerization over Pt/SAPO-11 catalyst

GAO Shanbin^1,2, CHI Kebin³, YANG Xiaodong², ZHAO Zhen¹, HU Sheng³, DUAN Aijun¹, YU Chunmei², SUN Famin²

1 State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing 102249, China;
2 Petrochemical Research Center, PetroChina Company Limited, Daqing 163714, Heilongjiang, China;
3 Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China

Received:2016-06-30 Revised:2016-09-12 Online:2016-12-05 Published:2016-12-05
Supported by:
supported by the Scientific Research and Technology Development Foundation of PetroChina(2014B-2508).

摘要/Abstract

摘要：

采用SAPO-11分子筛制备Pt/SAPO-11双功能加氢异构催化剂，以n-C₈、n-C₁₂和n-C₁₆为模型化合物考察正构烷烃的加氢异构反应性能。结果表明，所制备的催化剂具有较好的异构化活性和选择性，其中单甲基支链异构产物收率和总异构产物收率分别可达60%和75%以上，是低凝柴油和高档润滑油基础油的理想组分。不同链长正构烷烃的异构化产物分布基本一致，但链长较长的正构烷烃更容易发生异构化反应和裂解反应，在保证相同转化率条件下长链烷烃裂解产物收率偏高且异构选择性降低。

关键词: 分子筛, 催化剂, 加氢异构, 正构烷烃, 选择性, 产物分布

Abstract:

A Pt/SAPO-11 dual functional catalyst was prepared from hydrothermally synthesized SAPO-11 molecular sieve and used to study hydroisomerization of n-C₈, n-C₁₂ and n-C₁₆ alkanes. Results indicated that this catalyst had good isomerization activity and high selectivity as a result of appropriate acid center and hierarchical pore distribution. Yields for monomethyl-branched isomers and total branched isomers, ideal components for low freezing point diesel and high-grade lubricant, were above 60% and 75% respectively. The distribution of isomerization products was almost the same for n-alkanes of different chain lengths, which monomethyl-branched isomers were about 75% of total isomerization products and 40% were monomethyl-branched isomers with methyl group at middle chain. Isomerization and hydrocracking reactions were more likely to occur on longer chain n-alkanes. Under the same conversion, long-chain n-alkanes showed increase in hydrocracking but decrease in isomerization selectivity.

Key words: molecular sieves, catalyst, hydroisomerization, n-alkanes, selectivity, product distribution

中图分类号:

高善彬, 迟克彬, 杨晓东, 赵震, 胡胜, 段爱军, 于春梅, 孙发民. 正构烷烃在Pt/SAPO-11催化剂上加氢异构反应性能[J]. 化工学报, 2016, 67(12): 5024-5030.

GAO Shanbin, CHI Kebin, YANG Xiaodong, ZHAO Zhen, HU Sheng, DUAN Aijun, YU Chunmei, SUN Famin. Performance of n-alkane isomerization over Pt/SAPO-11 catalyst[J]. CIESC Journal, 2016, 67(12): 5024-5030.

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正构烷烃在Pt/SAPO-11催化剂上加氢异构反应性能

Performance of n-alkane isomerization over Pt/SAPO-11 catalyst

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