Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO<sub>2</sub> catalyst

Yan Cao; Huiquan Li; Xintao Li; Liguo Wang; Ganyu Zhu; Qing Tang

doi:10.1016/j.cjche.2014.03.002

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Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst

研究简报 | Updated：2026-01-06

- Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst
- Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst
- 中国化学工程学报（英文版） 2015年23卷第2期页码：446-450
- Affiliations：
  
  Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences(CAS),Beijing,China,100190
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.03.002
  中图分类号：
- 纸质出版：2015
- Accepted：
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Yan Cao, Huiquan Li, Xintao Li, 等. Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst[J]. 中国化学工程学报（英文版）, 2015,23(2):446-450. DOI: 10.1016/j.cjche.2014.03.002.

catalyst[J]. , 2015, 23(2): 446-450.
Yan Cao, Huiquan Li, Xintao Li, 等. Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst[J]. 中国化学工程学报（英文版）, 2015,23(2):446-450. DOI: 10.1016/j.cjche.2014.03.002. DOI：

catalyst[J]. , 2015, 23(2): 446-450. DOI： 10.1016/j.cjche.2014.03.002.

摘要

Abstract

The efficient synthesis of dimethylhexane-1

6-dicarbamate (HDC) from 1

6-hexanediamine (HDA) and methyl carbonate over a series of heterogeneous catalysts (

e.g

MgO

and CeO

) was investigated. The reaction pathway was confirmed as an alcoholysis reaction through a series of designed experiments. Under optimized conditions

100% HDA conversion with 83.1% HDC

total

and 16.9% polyurea was obtained using a onestep with high temperature procedurewith CeO

as the catalyst. A newtwo-stepwith variable temperature technology was developed based on the reaction pathway to reduce the polyurea yield. Using the proposed method

the HDC

total

yield reached 95.2%

whereas the polyurea yield decreased to 4.8%. The CeO

catalyst showed high stability and did not exhibit any observable decrease in the HDC yield or any structural changes after four recycling periods.

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Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO2 catalyst

DOI：10.1016/j.cjche.2014.03.002

摘要

Abstract

关键词

Keywords

references

Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst

Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO₂ catalyst