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1.广西大学 化学化工学院,广西 南宁 530004
2.广西华谊能源化工有限公司,广西 钦州 535008
Received:17 June 2025,
Revised:2025-07-16,
Published:25 June 2026
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谢冬民,方松,陈柳云等.载体形貌对Cu/SiO2催化草酸二甲酯加氢制乙二醇反应稳定性的影响[J].低碳化学与化工,2026,51(6):52-64. DOI: 10.12434/j.issn.2097-2547.20250276.
XIE Dongmin,FANG Song,CHEN Liuyun,et al.Effects of support morphologies on stability of Cu/SiO2 for catalytic hydrogenation of dimethyl oxalate to ethylene glycol[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(6):52-64. DOI: 10.12434/j.issn.2097-2547.20250276.
谢冬民,方松,陈柳云等.载体形貌对Cu/SiO2催化草酸二甲酯加氢制乙二醇反应稳定性的影响[J].低碳化学与化工,2026,51(6):52-64. DOI: 10.12434/j.issn.2097-2547.20250276. DOI:
XIE Dongmin,FANG Song,CHEN Liuyun,et al.Effects of support morphologies on stability of Cu/SiO2 for catalytic hydrogenation of dimethyl oxalate to ethylene glycol[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(6):52-64. DOI: 10.12434/j.issn.2097-2547.20250276. DOI:
草酸二甲酯(DMO)加氢反应是制备乙二醇(EG)的一条兼具经济性与技术性的绿色路线。采用水热法制备了纳米颗粒状、块状以及球状SiO
2
载体并以此为载体制备了Cu基催化剂,探究了载体形貌对Cu/SiO
2
催化DMO加氢反应稳定性的影响。采用XRD、SEM、XPS和H
2
-TPR等对催化剂物化性质进行了分析。结果表明,Cu/SiO
2
的稳定性受SiO
2
载体形貌影响。反应70 h后,Cu/SiO
2
-N(N代表纳米颗粒状)的DMO转化率和EG选择性分别达到98.4%和89.5%,没有出现明显的失活。与块状和球状SiO
2
负载的催化剂以及商用催化剂相比,Cu/SiO
2
-N具有更高的稳定性。稳定性提高主要归因于Cu/SiO
2
-N的Cu
+
与Cu
0
相对含量之比较大,抗积碳性能较好。
The hydrogenation of dimethyl oxalate (DMO) to produce ethylene glycol (EG) is a green route that combines economic viability with technical feasibility. Nanoparticle-
bulk- and sphere-shaped SiO
2
supports were prepared by hydrothermal method for supporting Cu-based catalysts
aiming to investigate the effect of support morphologies on the stability of Cu/SiO
2
in DMO hydrogenation. The physicochemical properties of the catalysts were characterized by XRD
SEM
XPS
H
2
-TPR and so on. The results show that the stability of the Cu/SiO
2
catalyst is affected by the morphologies of the SiO
2
support. After 70 h of hydrogenation of DMO to EG
the DMO conversion rate and EG selectivity of the Cu/SiO
2
-N (N represents nanoparticle-shaped) catalyst still reaches 98.4% and 89.5%
respectively
without significant deactivation. Compared with the bulk- and sphere-shaped SiO
2
-supported catalysts
as well as commercial catalysts
the Cu/SiO
2
-N catalyst exhibits higher stability. The improvement in stability is mainly due to the higher relative content ratio of Cu
+
to Cu
0
and bet
ter anti-carbon deposition performance.
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