The Effects of PW/SiO₂ Activation Temperature on Friedel-Crafts Acylation of Toluene with Acetic Anhydride

Abstract:

The effects of PW/SiO₂ activation temperature on MPA (p-methoxyacetophenone) synthesis from toluene and acetic anhydride were carefully studied, and catalysts were carefully characterized by BET and XRD. The charactrerized results displayed that the interaction between PW and SiO₂ promoted the loss of acidic protons from PW to form the weak acid PW₁₂O_38.5 over PW/SiO₂. The weak acid site PW₁₂O_38.5 over PW/SiO₂ came into being when activation temperature increased to 300 °C, and the appearance of PW₁₂O_38.5 over PW/SiO₂ resulted in MPA yield decline.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 1464-1467
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.1464
• Online since: May 2011
• Authors: Ma Liang Zhang, Zhen Huan Li, Kun Mei Su, Lei Zhang, Bo Wen Cheng
• Keywords: Acetic Anhydride, Acylation, PW/SiO₂, Toluene

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DOI: 10.1126/science.145.3637.1174.b

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