| 原子层沉积构筑Pd/TiO2限域催化剂及其在1,4-丁炔二醇加氢的应用 |
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| 引用本文： | 张淑芳,杨高举,褚盼楠,张斌,赵永祥.原子层沉积构筑Pd/TiO2限域催化剂及其在1,4-丁炔二醇加氢的应用[J].分子催化,2023,37(4):348-355. |
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| 作者姓名： | 张淑芳 杨高举 褚盼楠 张斌 赵永祥 |
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| 作者单位： | 山西大学 化学化工学院 精细化学品工程研究中心, 山西 太原 030006,山西大学 化学化工学院 精细化学品工程研究中心, 山西 太原 030006,山西大学 化学化工学院 精细化学品工程研究中心, 山西 太原 030006,中国科学院山西煤炭化学研究所煤转化国家重点实验室, 山西 太原 030001,山西大学 化学化工学院 精细化学品工程研究中心, 山西 太原 030006 |
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| 基金项目： | 国家自然科学科学基金青年项目(No.22005181);山西省应用基础研究计划,面上青年基金项目(No.201901D211156) |
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| 摘 要： | 利用ALD制备了TiO2限域的Pd催化剂, 研究了限域空间内Pd纳米颗粒与TiO2的界面作用对1,4-丁炔二醇(BYD)加氢性能的影响. 相比于管外负载型催化剂, 限域催化剂在催化1,4-丁炔二醇选择性加氢反应中体现出非常高的催化活性和1,4-丁烯二醇的选择性. HR-TEM、 EDX-Mapping、 XRD、 XPS和H2-TPR表征说明, 限域体系中Pd-TiO2的界面相互作用强于传统TiO2表面负载型Pd催化剂, 这种强界面作用不仅能够提高BYD的加氢活性, 也可抑制半加氢产物1,4-丁烯二醇的异构化和深度加氢, 提高1,4-丁烯二醇的选择性, 而且限域结构也可阻止管内壁Pd纳米颗粒的脱落, 提高催化剂的稳定性.
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| 关 键 词： | 原子层沉积 限域结构 Pd-催化剂 界面相互作用 1 4-丁炔二醇加氢 |
| 收稿时间： | 2023/4/20 0:00:00 |
| 修稿时间： | 2023/5/29 0:00:00 |
Confined Pd/TiO2 Catalyst Constructed by ALD for the Hydrogenation of 1,4-butynediol |
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| Zhang Shufang,Yang Gaoju,Chu Pannan,Zhang Bin and Zhao Yongxiang.Confined Pd/TiO2 Catalyst Constructed by ALD for the Hydrogenation of 1,4-butynediol[J].Journal of Molecular Catalysis (China),2023,37(4):348-355. |
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| Authors: | Zhang Shufang Yang Gaoju Chu Pannan Zhang Bin and Zhao Yongxiang |
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| Affiliation: | Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University, Taiyuan 030006, China,Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University, Taiyuan 030006, China,Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University, Taiyuan 030006, China,State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China and Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University, Taiyuan 030006, China |
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| Abstract: | A series of TiO2 confined Pd catalysts were prepared by ALD, and the effect of the interfacial interaction between Pd and TiO2 on the selective hydrogenation of 1,4-butynediol (BYD) was studied. Compared with TiO2 supported Pd catalysts, Pd catalysts confined in TiO2 exhibit more highly efficient catalytic activity and selectivity for 1,4-butenediol in the hydrogenation of 1,4-butynediol. The phase structure and electronic properties of catalysts were characterized by HR-TEM, XRD and XPS, and the results showed that stronger Pd-TiO2 interaction exited in the confined catalysts. The stronger Pd-TiO2 interaction can efficiently inhibit the isomerization and deep hydrogenation of 1,4-butenediol, thus improving the selectivity of 1,4-butenediol. Moreover, the leaching of Pd nanoparticles in the confined catalysts can also be prevented, and the stability of catalysts was improved. |
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| Keywords: | atomic layer deposition confined structure Pd catalyst interfacial interaction the hydrogenation of 1 4-butynediol |
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