Production of Terephthalic Acid from Lignin-Based Phenolic Acids by a Cascade Fixed-Bed Process

Vanillic acid and syringic acid were converted to terephthalic acid via a two-step process using a fixed-bed reactor. The cascade route includes hydrogenation demethoxylation and carboxylation reactions. Activated carbon (AC)-supported MoWBO x and PdNiO x were determined to be suitable catalyst prec...

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Published in:ACS catalysis 2016-09, Vol.6 (9), p.6141-6145
Main Authors: Bai, Zhiyu, Phuan, Wen Chuen, Ding, Jun, Heng, Teck Huat, Luo, Jizhong, Zhu, Yinghuai
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description Vanillic acid and syringic acid were converted to terephthalic acid via a two-step process using a fixed-bed reactor. The cascade route includes hydrogenation demethoxylation and carboxylation reactions. Activated carbon (AC)-supported MoWBO x and PdNiO x were determined to be suitable catalyst precursors for the process. An intermediate of p-hydroxybenzoic acid (HBA) was produced from the demethoxylation in 71.6% selectivity, and the terephthalic acid was obtained in 58.7% yield with 66.4% HBA conversion.
doi_str_mv 10.1021/acscatal.6b02052
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title Production of Terephthalic Acid from Lignin-Based Phenolic Acids by a Cascade Fixed-Bed Process
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