Effects of Zr additive contents on catalytic performances of Cu/SiO<sub>2</sub> nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol

ZHAO Lina; ZHANG Huidan; ZHAO Jinxian; REN Jun

doi:10.12434/j.issn.2097-2547.20240164

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Effects of Zr additive contents on catalytic performances of Cu/SiO₂ nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol

更新时间：2025-02-27

- Effects of Zr additive contents on catalytic performances of Cu/SiO₂ nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol
- Vol. 50, Issue 2, Pages: 61-68(2025)
- 作者机构：
  
  太原理工大学化学与化工学院省部共建煤基能源清洁高效利用国家重点实验室，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240164
  CLC： TQ225.24;TQ426
- Received：17 April 2024，
  
  Revised：28 May 2024，
  
  Published：25 February 2025
- 稿件说明：
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赵丽娜,张慧丹,赵金仙等.Zr助剂含量对Cu/SiO₂纳米管催化草酸二甲酯加氢制乙二醇反应性能的影响[J].低碳化学与化工,2025,50(02):61-68.

ZHAO Lina,ZHANG Huidan,ZHAO Jinxian,et al.Effects of Zr additive contents on catalytic performances of Cu/SiO₂ nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):61-68.
赵丽娜,张慧丹,赵金仙等.Zr助剂含量对Cu/SiO₂纳米管催化草酸二甲酯加氢制乙二醇反应性能的影响[J].低碳化学与化工,2025,50(02):61-68. DOI： 10.12434/j.issn.2097-2547.20240164.

ZHAO Lina,ZHANG Huidan,ZHAO Jinxian,et al.Effects of Zr additive contents on catalytic performances of Cu/SiO₂ nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):61-68. DOI： 10.12434/j.issn.2097-2547.20240164.

摘要

随着我国聚酯工业的迅猛发展，乙二醇（EG）需求量持续增大，使用助剂对Cu基催化剂进行改性已成为提高乙二醇产率的有效策略之一。采用一锅法制备了Zr助剂掺杂的Cu/SiO

纳米管催化剂用于草酸二甲酯（DMO）加氢合成乙二醇，采用XRD、N

吸/脱附、FT-IR、TEM、H

-TPR和XPS等对催化剂进行了表征，并重点考察了Zr助剂含量（

(Zr)/

(Cu)）对催化性能的影响。结果表明，适量Zr助剂（

(Zr)/

(Cu) = 0.05）的引入有利于活性组分Cu均匀分布在纳米管上，提高了Cu物种的分散度。此外，Cu与Zr之间的电子转移增强了金属之间的相互作用，有利于催化剂表面Cu

物种的稳定，进而提高催化剂的活性和稳定性。在反应温度为210 ℃、反应压力为2.4 MPa、原料

(DMO)为110、质量空速为0.405 h

-1

和反应时间为40 h条件下，Cu-Zr

0.05

/SiO

催化性能最佳，其DMO转化率和EG选择性分别达到99.1%和91.9%。

Abstract

With the rapid development of polyester industry in China

the demand for ethylene glycol（EG） continues to increase

and the use of additives to modify copper-based catalysts has become one of the effective strategies to improve the yield of ethylene glycol. Zr additive-doped Cu/SiO

nanotube catalysts were prepared by one-pot method for dimethyl oxalate hydrogenation to ethylene glycol. The catalysts

were characterized by XRD

adsorption/desorption

FT-IR

TEM

-TPR and XPS. The effects of Zr contents (

(Zr)/

(Cu)) on catalytic performances was investigated. The results show that introduction of appropriate amount of Zr (

(Zr)/

(Cu) = 0.05) is conducive to the copper species uniform distribution on the nanotubes

which improves the dispersion of copper species. In addition

the electron transfer between Cu and Zr enhances the interaction between metals

which is conducive to the stability of Cu

species on catalyst surface

thereby improving the activity and stability of catalyst. Under the conditions of reaction temperature of 210 ℃

reaction pressure of 2.4 MPa

(DMO) of 100

weight hourly space velocity of 0.405 h

-1

and reaction time of 40 h

Cu-Zr

0.05

/SiO

shows the best catalytic performance. The DMO conversion and EG selectivity of Cu-Zr

0.05

/SiO

reach 99.1% and 91.9%

respectively.

关键词

Keywords

references

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Effects of Zr additive contents on catalytic performances of Cu/SiO2 nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol

DOI：10.12434/j.issn.2097-2547.20240164

摘要

Abstract

关键词

Keywords

references

Effects of Zr additive contents on catalytic performances of Cu/SiO₂ nanotube catalysts for dimethyl oxalate hydrogenation to ethylene glycol