| 摘要: |
| 采用浸渍法制备了负载型钯催化剂（Pd/γ-Al2O3）,并将制备的催化剂应用于对苯醌加氢制备对苯二酚反应. 考察了不同反应温度、压力、时间、催化剂用量等因素对Pd/γ-Al2O3催化剂性能的影响. 以甲醇（CH4O）作为溶剂,在反应温度为30 ℃、氢气（H2）压力为3.0 MPa、反应时间为2 h、对苯醌和甲醇的质量比m（对苯醌）:m（甲醇）=3:47、催化剂质量分数仅为0.25%（以对苯醌质量计）的条件下,对苯醌转化率为100%,对苯二酚的选择性为96.9%,产率为96.9%. |
| 关键词: 对苯醌 催化加氢 对苯二酚 钯（Pd）催化剂 |
| DOI：10.3969/J.ISSN.1000-5137.2024.01.008 |
| 分类号:TQ 423.93 |
| 基金项目: |
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| Hydrogenation of p-benzoquinone to hydroquinone over Pd/γ-Al2O3 catalyst |
|
HE Yi, CHEN Chenju, ZHANG Chunlei
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College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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| Abstract: |
| In this paper,a γ-Al2O3-supported palladium catalyst（Pd/γ-Al2O3） was prepared by the impregnation method and was applied to the hydrogenation of p-benzoquinone to produce hydroquinone. The effects of reaction temperature, pressure, time, and amount of catalyst on the performance of Pd/γ-Al2O3 catalyst were investigated. With methanol as the solvent, the conversion of p-benzoquinone, the selectivity of hydroquinone, and the yield were 100%, 96.9%, and 96.9%, respectively when the reaction temperature, the pressure of hydrogen, the reaction time, the mass ratio of p-benzoquinone and methanol [m（p-benzoquinone）:m（methanol）], and the mass ratio of catalyst （by mass of p-benzoquinone） were 30 ℃, 3.0 MPa, 2 h,3:47, and 0.25%, respectively. |
| Key words: p-benzoquinone catalytic hydrogenation hydroquinone palladium（Pd）catalyst |
