Preparation of Ni/La-Al<sub>2</sub>O<sub>3</sub> and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde

LI Ying; LIU Xiaohong; AN Hualiang; ZHAO Xinqiang; WANG Yanji

doi:10.11949/j.issn.0438-1157.20161014

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Preparation of Ni/La-Al₂O₃ and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde

更新时间：2025-12-10

- Preparation of Ni/La-Al₂O₃ and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde
- CIESC Journal Issue 4, Pages: 1381-1389(2017)
- 作者机构：
  
  河北工业大学化工学院, 绿色化工与高效节能河北省重点实验室,天津,300130
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161014
  CLC： Q032
- Online First：05 April 2017，
  
  Published：05 April 2017
- 稿件说明：
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LI Ying, LIU Xiaohong, AN Hualiang, et al. Preparation of Ni/La-Al₂O₃ and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde[J]. CIESC Journal, 2017, (4): 1381-1389. DOI: 10.11949/j.issn.0438-1157.20161014.
DOI：

LI Ying, LIU Xiaohong, AN Hualiang, et al. Preparation of Ni/La-Al₂O₃ and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde[J]. CIESC Journal, 2017, (4): 1381-1389. DOI: 10.11949/j.issn.0438-1157.20161014. DOI：

摘要

辛醇（2-乙基己醇）是重要的基本有机化工原料，其工业生产由丙烯氢甲酰化合成正丁醛、正丁醛自缩合制备2-乙基-2-己烯醛（辛烯醛）、辛烯醛加氢生成辛醇3个反应单元构成。本研究旨在以Ni/La-Al2O3为催化剂实现正丁醛顺序自缩合和加氢“一锅法”合成辛醇。首先制备了Ni/La-Al2O3催化剂，并考察了制备条件对其催化性能的影响，结果表明Ni/La-Al2O3适宜的制备条件为Ni负载量为25%（质量分数），浸渍Ni（NO3（2并老化后，于500℃下焙烧4 h，再于550℃还原3 h。在适宜的反应条件下，正丁醛完全转化，辛醇的收率为67.0%。结合XRD和SEM表征发现，γ-Al2O3水合是导致Ni/La-Al2O3催化剂失活的主要原因之一。

Abstract

2-Ethylhexanol (2EHO)

an important organic chemical compound

is commercially produced by the following three steps:propylene hydroformylation to n-butyraldehyde

n-butyraldehyde self-condensation to 2-ethyl-2-hexenal (2E2H)

and 2E2H hydrogenation to 2EHO. One-pot synthesis of 2EHO was studied by sequential n-butyraldehyde aldol condensation and hydrogenation reaction with synthesized Ni/La-Al2O3 catalyst. The investigation of preparation conditions of Ni/La-Al2O3 on its catalytic performance showed that most suitable preparation condition for Ni/La-Al2O3 was Ni loading of 25% (mass)

after immersion at Ni(NO3)2 and aging

then 4 h at calcination temperature of 500℃

and finally 3 h at reduction temperature of 550℃. Under the optimal reaction conditions

the catalyst could achieve 100% n-butyraldehyde conversion and 67.0% yield of 2EHO. Combined with results of XRD and SEM analyses

γ-Al2O3 hydration was one of the main reasons for the deactivation of Ni/La-Al2O3.

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Preparation of Ni/La-Al2O3 and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde

DOI：10.11949/j.issn.0438-1157.20161014

摘要

Abstract

关键词

Keywords

references

Preparation of Ni/La-Al₂O₃ and its catalytic performance for one-pot sequential synthesis of 2-ethylhexanol from n-butyraldehyde