Alkylation of benzene with 1-butylene over β-zeolite modified by Fe or La

HUANG Xinjiang; FU Kaimei; HU Yaochi; ZOU Bin; HU Yi

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Alkylation of benzene with 1-butylene over β-zeolite modified by Fe or La

更新时间：2025-12-10

- Alkylation of benzene with 1-butylene over β-zeolite modified by Fe or La
- CIESC Journal Issue 10, Pages: 2497-2502(2009)
- 作者机构：
  
  南京工业大学材料化学工程国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 October 2009，
  
  Published：05 October 2009
- 稿件说明：
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HUANG Xinjiang, FU Kaimei, HU Yaochi, et al. Alkylation of benzene with 1-butylene over β-zeolite modified by Fe or La[J]. CIESC Journal, 2009, (10): 2497-2502.
DOI：

HUANG Xinjiang, FU Kaimei, HU Yaochi, et al. Alkylation of benzene with 1-butylene over β-zeolite modified by Fe or La[J]. CIESC Journal, 2009, (10): 2497-2502. DOI：

摘要

在小型固定床反应器上研究了Fe、La改性β沸石催化苯和正丁烯的烷基化反应，考察了金属负载量以及反应温度、进料质量空速比等工艺条件对改性β沸石催化性能的影响。采用XRD、BET、NH3-TPD和TG-DTA等表征手段研究了Fe、La改性β沸石催化性能提高的机理。研究表明，Fe、La改性后β沸石表面的强、弱酸量都明显下降，相比较而言，La改性β沸石拥有较强的表面酸性，在催化苯和正丁烯的烷基化反应中显示出了更好的催化性能，具有更强的抗积炭能力，这也与BET和TG-DTA的结果一致。在以20%La/β沸石为催化剂、反应温度180℃、苯的进料空速1.2 h-1、正丁烯的进料空速0.6 h-1、反应6 h条件下，正丁烯的转化率为87.9%，仲丁基苯的选择性为88.2%。

Abstract

The catalytic performance of β-zeolites modified by Fe or La was investigated in the alkylation of benzene with 1-butylene in a fixedbed reactor.Effects of metal content

temperature and feed ratio on the reaction were studied.The structure and acidity of modified β-zeolites were characterized by XRD

BET

NH3-TPD and TG-DTA.The quantities of both strong and weak acid decreased evidentlyEspecially

the acidity of the β-zeolite modified by La is higher than that modified by Fe

and the La modified β-zeolite shows better catalytic performance and stronger coke-resistance

which is supported by the results obtained by BET and TG-DTA.Both of Fe and La modified β-zeolites show better catalytic performance than the original one.After 6 h reaction over 2.0%La/β-zeolites at 453 K with WHSV of 0.6 h-1 for 1-butylene and of 1.2 h-1 for benzene

the conversion of 1-butylene is 87.9% with the selectivity of 88.2% for sec-butylbenzene.

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