铜晶粒尺寸及其稳定性对醋酸乙酯加氢制乙醇的影响

TQ223.122%TQ426; 采用并流共沉淀法制备了一系列铜基催化剂,考察了不同稀土(Y、La、Ce、Pr)改性对Cu/SiO2催化剂催化醋酸乙酯(EA)加氢制乙醇的影响,并采用X射线衍射仪(XRD)、透射电子显微镜(TEM)、Brunauer-Emmett-Teller(BET)、氢气程序升温还原(H2-TPR)、氨气程序升温脱附(NH3-TPD)和X射线光电子能谱仪(XPS)等表征手段对催化剂进行了分析.结果 表明,稀土(Y、La、Ce、Pr)改性能够减小铜晶粒尺寸,增大铜组分分散度和孔径,使催化剂更易还原,同时也能调节催化剂表面酸性和n(Cu0)/n(Cuo+Cu+),从而提高催化剂...

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Published in华东理工大学学报（自然科学版） Vol. 46; no. 1; pp. 1 - 9
Main Authors 赵祥晴, 黄岩, 张维义, 岳志, 程振民
Format Journal Article
LanguageChinese
Published 华东理工大学化学工程联合国家重点实验室,上海,200237 28.02.2020
Subjects
稀土
加氢
晶粒尺寸
乙醇
醋酸乙酯
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Abstract TQ223.122%TQ426; 采用并流共沉淀法制备了一系列铜基催化剂,考察了不同稀土(Y、La、Ce、Pr)改性对Cu/SiO2催化剂催化醋酸乙酯(EA)加氢制乙醇的影响,并采用X射线衍射仪(XRD)、透射电子显微镜(TEM)、Brunauer-Emmett-Teller(BET)、氢气程序升温还原(H2-TPR)、氨气程序升温脱附(NH3-TPD)和X射线光电子能谱仪(XPS)等表征手段对催化剂进行了分析.结果 表明,稀土(Y、La、Ce、Pr)改性能够减小铜晶粒尺寸,增大铜组分分散度和孔径,使催化剂更易还原,同时也能调节催化剂表面酸性和n(Cu0)/n(Cuo+Cu+),从而提高催化剂的加氢活性.其中,Y改性Cu/SiO2催化剂的加氢活性最高,且具有良好的高温抗烧结能力和稳定性能.
AbstractList TQ223.122%TQ426; 采用并流共沉淀法制备了一系列铜基催化剂,考察了不同稀土(Y、La、Ce、Pr)改性对Cu/SiO2催化剂催化醋酸乙酯(EA)加氢制乙醇的影响,并采用X射线衍射仪(XRD)、透射电子显微镜(TEM)、Brunauer-Emmett-Teller(BET)、氢气程序升温还原(H2-TPR)、氨气程序升温脱附(NH3-TPD)和X射线光电子能谱仪(XPS)等表征手段对催化剂进行了分析.结果 表明,稀土(Y、La、Ce、Pr)改性能够减小铜晶粒尺寸,增大铜组分分散度和孔径,使催化剂更易还原,同时也能调节催化剂表面酸性和n(Cu0)/n(Cuo+Cu+),从而提高催化剂的加氢活性.其中,Y改性Cu/SiO2催化剂的加氢活性最高,且具有良好的高温抗烧结能力和稳定性能.
Author 张维义
程振民
赵祥晴
黄岩
岳志
AuthorAffiliation 华东理工大学化学工程联合国家重点实验室,上海,200237
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ZHAO Xiangqing
YUE Zhi
CHENG Zhenmin
ZHANG Weiyi
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DocumentTitle_FL Influences of the Size and Stability of Cu Crystallite on Hydrogenation of Ethyl Acetate for Preparation of Ethanol
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加氢
晶粒尺寸
乙醇
醋酸乙酯
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Title 铜晶粒尺寸及其稳定性对醋酸乙酯加氢制乙醇的影响
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