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
- Chinese Journal of Chemical Engineering Vol. 23, Issue 2, Pages: 446-450(2015)
- 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
  CLC：
- Published：2015
- Accepted：
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catalyst[J]. , 2015, 23(2): 446-450.
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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Related Author

Huiquan Li

Ningbo Qin

Ganyu Zhu

Yan Cao

Zhang Yaoyuan

Li Hansheng

Jiang Guiyuan

Chen Kangcheng

Related Institution

National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences

Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology

Analysis and Testing Center, Beijing Institute of Technology

State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing

Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology

⁰

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