| 草酸二甲酯加氢制乙二醇Cu/SiO_2催化剂失活机理的研究 |
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| 引用本文： | 张博,张素华,惠胜国,计扬,李伟,房鼎业. 草酸二甲酯加氢制乙二醇Cu/SiO_2催化剂失活机理的研究[J]. 天然气化工, 2012, 37(4): 1-6 |
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| 作者姓名： | 张博 张素华 惠胜国 计扬 李伟 房鼎业 |
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| 作者单位： | 1. 华东理工大学化学工程国家重点实验室,上海,200237
2. 上海浦景化工技术有限公司,上海,200231 |
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| 摘 要： | 通过快速老化实验研究了草酸二甲酯加氢制乙二醇Cu/SiO2催化剂的失活。采用XRD、低温N2吸附、TEM及TG对失活前后催化剂进行了表征,发现催化剂失活原因为热烧结、积炭及活性组分铜的价态变化。还研究了各种失活原因之间的内在联系,并提出了较为合理的失活机理。
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| 关 键 词： | Cu/SiO2催化剂 失活机理 草酸二甲酯 加氢 乙二醇 |
Study on deactivation mechanism of Cu/SiO2 catalyst for hydrogenation of dimethyl oxalate to ethylene glycol |
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| ZHANG Bo , ZHANG Su-hua , HUI Sheng-guo , JI Yang , LI Wei , FANG Ding-ye. Study on deactivation mechanism of Cu/SiO2 catalyst for hydrogenation of dimethyl oxalate to ethylene glycol[J]. Natural Gas Chemical Industry, 2012, 37(4): 1-6 |
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| Authors: | ZHANG Bo ZHANG Su-hua HUI Sheng-guo JI Yang LI Wei FANG Ding-ye |
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| Affiliation: | 1(1.State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China; 2.Pujing Chemical Industry(Sha) Limited,Shanghai 200231,China) |
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| Abstract: | The deactivation mechanism of Cu/SiO2 catalysts for hydrogenation of dimethyl oxalate(DMO) was investigated by a well-designed rapid aging treatment experiment.The structure and texture of working and deactivated catalysts were characterized by XRD,N2-physisorption,TEM,and TG.Based on the characterization results,the deactivation was attributed to a number of factors like sintering,carbonaceous deposits,and valence transition of copper species.The intrinsic relations between catalysts deactivation and sintering,carbonaceous deposits,and valence transition were discussed,and a deactivation mechanism of Cu/SiO2 catalysts was proposed. |
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| Keywords: | Cu/SiO2 catalyst deactivation mechanism dimethyl oxalate hydrogenation ethylene glycol |
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