预积炭对FER分子筛催化正丁烯骨架异构反应性能的影响

doi:10.16085/j.issn.1000-6613.2016.07.022

化工进展 ›› 2016, Vol. 35 ›› Issue (07): 2098-2102.DOI: 10.16085/j.issn.1000-6613.2016.07.022

预积炭对FER分子筛催化正丁烯骨架异构反应性能的影响

范丹丹¹, 周峰¹, 于绍先², 马会霞¹, 乔凯¹

中国石油化工股份有限公司抚顺石油化工研究院, 辽宁抚顺 113001;
2. 中国石油天然气股份有限公司抚顺石化分公司, 辽宁抚顺 113008

收稿日期:2015-09-23 修回日期:2015-12-08 出版日期:2016-07-05 发布日期:2016-07-05
通讯作者: 周峰,博士,高级工程师,从事低碳烯烃综合利用方向的研究。E-mail:zhoufeng.fshy@sinopec.com。
作者简介:范丹丹(1981-),女,硕士,工程师,从事低碳烯烃综合利用方向的研究。
基金资助:
中国石油化工集团公司项目(210064)。

Effect of carbon pre-deposition on FER zeolite catalyzed reaction of n-butenes skeletal isomerization

FAN Dandan¹, ZHOU Feng¹, YU Shaoxian², MA Huixia¹, QIAO Kai ¹

1. Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC, Fushun 113001, Liaoning, China;
2. Fushun Petrochemical Company, PetroChina, Fushun 113008, Liaoning, China

Received:2015-09-23 Revised:2015-12-08 Online:2016-07-05 Published:2016-07-05

摘要/Abstract

摘要： 采用1-丁烯和N₂混合气对FER分子筛进行高温预积炭处理,得到一系列具有不同预积炭量的FER分子筛。对预积炭的FER分子筛进行表征,研究预积炭行为对其催化正丁烯骨架异构制异丁烯反应性能的影响。热重表征结果表明,预沉积在FER分子筛上的积炭有两种,即Carbon_LT(低温失重峰)和Carbon_HT(高温失重峰)。Carbon_LT含量随预积炭处理时间增加而呈线性增加的趋势,而Carbon_HT含量在预积炭处理1h后就基本保持不变。Carbon_LT量与初始异丁烯选择性具有较好的相关性,Carbon_LT可能沉积在诱发生成丙烯和乙烯的副反应活性中心上。

关键词: 预积炭, 沸石, 正丁烯, 骨架异构, 异丁烯, 选择性

Abstract: A series of FER zeolites with different amount of pre-deposited carbon were prepared by pretreatment at high temperature using mixture of 1-butene and N₂. The effect of pre-coking on the catalytic performances of FER zeolite in the skeletal isomerization of n-butenes into isobutene were studied. TG-DTA results indicated that there were two kinds of carbon deposits, i.e. Carbon_LT (mass loss at low temperature) and Carbon_HT (mass loss at high temperature). The amount of Carbon_LT increased linearly with the extension of pre-coking time, while the amount of Carbon_HT remained constant after being treated for one hour. The amount of Carbon_LT had closely related to the initial isobutene selectivity and the Carbon_LT might deposit on the active sites where propylene and ethylene were produced.

Key words: carbon pre-deposition, zeolite, n-butenes, skeletal isomerization, isobutene, selectivity

中图分类号:

TQ013.1

范丹丹, 周峰, 于绍先, 马会霞, 乔凯. 预积炭对FER分子筛催化正丁烯骨架异构反应性能的影响[J]. 化工进展, 2016, 35(07): 2098-2102.

FAN Dandan, ZHOU Feng, YU Shaoxian, MA Huixia, QIAO Kai . Effect of carbon pre-deposition on FER zeolite catalyzed reaction of n-butenes skeletal isomerization [J]. Chemical Industry and Engineering Progree, 2016, 35(07): 2098-2102.

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预积炭对FER分子筛催化正丁烯骨架异构反应性能的影响

Effect of carbon pre-deposition on FER zeolite catalyzed reaction of n-butenes skeletal isomerization

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