High-Yielded Side-Chain Alkylation from Toluene and Methanol Over KPO/CsX.
- Resource Type
- Article
- Authors
- Wang, Huihui; Wang, Bin; Wen, Yueli; Huang, Wei
- Source
- Catalysis Letters. Jan2017, Vol. 147 Issue 1, p161-166. 6p.
- Subject
- *ALKYLATION
*SUBSTITUENTS (Chemistry)
*TOLUENE
*CATALYST supports
*POTASSIUM phosphates
*ION exchange (Chemistry)
- Language
- ISSN
- 1011-372X
Potassium phosphate supported on ion-exchanged CsX zeolite was prepared by impregnation method, and their performance was investigated for the side-chain alkylation of toluene with methanol. When KPO was more than 5 wt%, the catalyst activity and selectivity of styrene and ethylbenzene were improved significantly. The conversion of methanol and selectivity of styrene and ethylbenzene reached 84.1 and 92.8% with KPO loading of 7 wt%. It was concluded that moderate addition of KPO decreased the amount of weak acid and increased the strength and amount of middle base sites. The base sites at 270-300 °C (CO-TPD) were favorable for this reaction. Graphical Abstract: [ABSTRACT FROM AUTHOR]