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林产化学与工业

林产化学与工业 ›› 2002, Vol. 22 ›› Issue (04): 10-14.

• 研究报告 • 上一篇    下一篇

固体超强酸SO42-/ZrO2催化α-蒎烯异构化反应研究

王亚明, 谢惠定, 黄伟莉   

  1. 昆明理工大学, 生物与化学工程学院, 云南, 昆明, 650224
  • 收稿日期:2002-02-08 修回日期:1900-01-01 出版日期:2002-12-30 发布日期:2002-12-30

STUDY ON α-PINENE ISOMERIZATION CATALYZED BY SO42-/ZrO2 SOLID SUPERACID

WANG Ya-ming, XIE Hui-ding, HUANG Wei-li   

  1. Institute of Biological and Chemical Engineering, Kunming University of Science and Technology, Kunming 650224, China
  • Received:2002-02-08 Revised:1900-01-01 Online:2002-12-30 Published:2002-12-30

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摘要： 考察了SO42-/ZrO2型催化剂的制备条件如硫酸浓度、焙烧温度和焙烧时间对催化剂催化性能的影响。实验结果表明,在硫酸浓度较低时,焙烧3h催化剂的活性随焙烧温度的提高而下降;在较低硫酸浓度和较低焙烧温度条件下,催化剂的性能受焙烧时间的影响不大,对产物分布有一定的影响。用上述SO42-/ZrO2固体超强酸催化α-蒎烯异构化反应,反应温度130℃±2℃,催化剂质量用量为原料的4%,α-蒎烯转化率88.8%,生成莰烯的选择性55.4%。测定了几种催化剂的哈默特常数,并用透射电子显微镜(TEM)对催化剂进行了形貌表征。

关键词: SO42-/ZrO2型催化剂, 固体超强酸, α-蒎烯异构化

Abstract: Effects of conditions for preparation ofSO42-/ZrO2 solid superacid, such as concentration of H2SO4, calcination temperature,calcination time with respect to its catalytic activity were studied.Results showed that as calcination temperature increased,catalytic activity ofSO42-/ZrO2 catalysts decreased under lower concentration of H2SO4 and calcination time 3 h.Catalytic activity was not obviously affected by calcinations time under lower concentration of H2SO4 and lower calcination temperature,while products distribution was affected to a certain extent.SO42-/ZrO2 solid superacid was used to catalyze α pinene isomerization at 130℃±2℃,mass part of catalyst 4% to give results of α pinene conversion at 88.8%,and camphene selectivity at 55.4%.Hammett constants of several catalysts were measured,and surface properties ofSO42-/ZrO2 catalysts were tested by TEM.

Key words: SO42-/ZrO2 catalyst, solid superacid, α-pinene isomerization

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