物理化学学报 >> 2000, Vol. 16 >> Issue (08): 713-717.doi: 10.3866/PKU.WHXB20000808

研究论文 上一篇    下一篇

用于叔丁醇选择氧化的改性杂多化合物催化剂

张渊明, 罗文贱, 庞先杰, 杨骏, 谢思娟, 钟邦克   

  1. 暨南大学化学系,广州 510632
  • 收稿日期:1999-11-01 修回日期:2000-02-28 发布日期:2000-08-15
  • 通讯作者: 钟邦克

Selective Oxidation of t-Butanol with a Modified Heteropoly Catalyst

Zhang Yuan-Ming, Luo Wen-Jian, Pang Xian-Jie, Yang Jun, Xie Si-Juan, Zhong Bang-Ke   

  1. Department of Chemistry,Jianan University,Guangzhou 510632
  • Received:1999-11-01 Revised:2000-02-28 Published:2000-08-15
  • Contact: Zhong Bang-Ke

摘要:

将杂多化合物与具有“氧溢流”效应的α-Sb_2O_4混合制备的催化剂,在叔丁醇(异丁烯)一步选择氧化过程中,甲基丙烯酸为主要产物.经优化催化剂制备和反应条件后,甲基丙烯酸和甲基 丙烯醛总收率在75%以上,其中甲基丙烯酸收率达50%,有工业应用前景.采用DTA, IR, XRD 等方法对催化剂的组成与性质、物相结构进行了表征,考察了制备条件对催化剂活性的影响.

关键词: 选择氧化, 杂多化合物, 催化剂, 氧溢流, 叔丁醇(异丁烯)

Abstract:

A modified catalyst composed of heteropoly compound and α-Sb_2O_4 with oxygen spillover effect was used for the selective oxidation of t-butanol (isobutylene). Methacrylic acid (MAA) was the main product by one-step process. By optimizing the conditions of catalyst preparation and oxidation reaction, the yield of MAA is 50% and the total yield of MAA and methacrolein (MAL) is above 75%. The catalyst revealed a good potential application in industry. The physicochemical characterization of the catalysts (DTA, IR, and XRD) has been reported and the influence of preparation condition on catalytic activity has been examined in this paper.

Key words: Selective oxidation, Heteropoly compound, Catalyst, Oxygen spillover, t-Butanol(Isobutylene)