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›› 2008, Vol. 8 ›› Issue (3): 572-575.

• 生化工程专栏 • 上一篇    下一篇

Pd/La0.5Pb0.5MnO3催化氧化甲苷合成葡萄糖醛酸

袁华 孙炎彬 邬茂 杜治平 闫志国 吴元欣   

  1. 武汉工程大学化工与制药学院 绿色化工过程省部共建教育部重点实验室 武汉工程大学化工与制药学院 绿色化工过程省部共建教育部重点实验室 武汉工程大学化工与制药学院 绿色化工过程省部共建教育部重点实验室 武汉工程大学化工与制药学院 绿色化工过程省部共建教育部重点实验室 武汉工程大学化工与制药学院 绿色化工过程省部共建教育部重点实验室 武汉化工学院化工与制药学院
  • 收稿日期:2007-11-13 修回日期:2008-02-02 出版日期:2008-06-20 发布日期:2008-06-20
  • 通讯作者: 袁华

Synthesis of Glucuronic Acid by Pd/La0.5Pb0.5MnO3 Catalytic Oxidation from Methyl Glucoside

YUAN Hua SUN Yan-bin WU Mao DU Zhi-ping YAN Zhi-guo WU Yuan-xin   

  1. School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of chemical engineering & pharmacy, Wuhan Institute of Chemical Technology
  • Received:2007-11-13 Revised:2008-02-02 Online:2008-06-20 Published:2008-06-20
  • Contact: YUAN Hua

摘要: 采用沉淀法制备了以钙钛矿型复合金属氧化物为载体的催化剂Pd/La0.5Pb0.5MnO3,催化氧化甲基葡萄糖苷合成甲苷酸钠,进一步水解反应生成葡萄糖醛酸. 利用XRD和SEM对催化剂进行了表征,考察了催化剂制备和氧化工艺条件对葡萄糖醛酸收率的影响. 结果表明,在Pd负载量为1%、原料与催化剂质量比为6:1、温度70℃、压力为常压、pH值9、时间5 h的条件下,葡萄糖醛酸的收率达到29.5%,反应选择性较好.

关键词: 甲基葡萄糖苷, 葡萄糖醛酸, 催化氧化, Pd/La0.5Pb0.5MnO3负载型催化剂

Abstract: Glucuronic acid was synthesized by 1% Pd/La0.5Pb0.5MnO3 catalytic oxidation from methyl glucoside oxidized selectively. The support and catalyst samples were characterized by XRD and SEM techniques. The effects of different catalyst preparation methods and conditions of catalytic oxidation on the yield of glucuronic acid were studied. The results showed that the supports produced by sol-gel method and the catalyst prepared by precipitation had better catalytic activity, the yield of glucuronic acid reached 29.5% under the conditions of catalyst dosage 1/6 (based on glucoside mass), temperature 70℃, pH value 9, reaction time 5 h, and the ordinary pressure, and the catalyst had good selectivity.

Key words: methyl glucoside, glucuronic acid, catalytic oxidation, Pd/La0.5Pb0.5MnO3 catalyst

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