Deoxyalkylation of guaiacol using haggite structured V 4 O 6 (OH) 4

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Fei Yan
  • Zhe Wen
  • Kai Wu
  • Kai Cui
  • Fuhang Mai
  • Zewei Ma
  • Yushuai Sang
  • Yunfei Bai
  • Hong Chen
  • Yongdan Li

Research units

  • Tianjin University

Abstract

When V 2 O 5 is used for the deoxygenation of guaiacol in methanol, it is reduced in situ to haggite structured V 4 O 6 (OH) 4 . Guaiacol prevents further reduction of the haggite phase in methanol and haggite catalyzes the partial deoxygenation of guaiacol. Haggite is a metastable redox catalyst for the deoxygenation of guaiacol, which follows the reverse Mars-van Krevelen mechanism. In addition, haggite is also a Lewis acid catalyst and catalyzes the alkylation of guaiacol with methanol as the alkylation reagent. The main products of the guaiacol deoxyalkylation are 2,6-dimethylphenol, 2-methoxy-6-methylphenol, 2,4,6-trimethylphenol, 2,3,6-trimethylphenol, 2,3,5,6-tetramethylphenol and 6-methyl-2-tert-butylphenol. Oligomerization takes place during the reaction but it is reversible. When the reaction is performed at 300 °C for 6 h, the 83.5% total selectivity for alkylphenols is achieved with a 99.0% conversion.

Details

Original languageEnglish
Pages (from-to)1922-1932
Number of pages11
JournalCATALYSIS SCIENCE AND TECHNOLOGY
Volume9
Issue number8
Publication statusPublished - 11 Mar 2019
MoE publication typeA1 Journal article-refereed

ID: 33577049