Solid acid catalyst plays a crucial role in the petroleum refinery industry and bio-refinery technology. In this work, p-phenolsulfonic acid (PSA) was successfully grafted onto the surface of KH560-modified zirconium phosphate (K-ZrP) in a facile routine. The structure and property of this organic-inorganic combined solid acid PSA/K-ZrP-x were characterized via XRD, FTIR, ¹³C solid-state NMR, TG, N₂ adsorption-desorption, SEM, pyridine-adsorption FTIR and XPS technologies. The characterization results showed that KH560 can bond with ZrP and promote the grafting of PSA on the surface of K-ZrP via the condensation reaction between its epoxy ring and the phenolic hydroxyl group in PSA. Consequently, PSA/K-ZrP-2 exhibited excellent performance and stability in the transesterification between glycerol and methyl acetate among the tested H₃PW₁₂O₄₀, Amberlyst-45, HBEA, HZSM-5, ZrP, AlCl₃ and FeCl₃ catalysts. The calculated conversion of glycerol reached 81.3% with a 97.9% selectivity for monoacetin (MAG) and diacetin (DAG) with a 2.2% dosage of [H⁺] at 100 °C for 4 h. The highest specific activity of PSA/K-ZrP-2 reached 24028.2 mg-glycerol/g-cat/h in a short reaction time (at 0.17 h), and it could be recycled five times without obvious deactivation.

固体酸催化剂在石油炼制工业和生物炼制技术中起着至关重要的作用。在这项工作中，对苯酚磺酸 (PSA) 成功地接枝到了 KH560 改性的磷酸锆 (K-ZrP) 的表面上。该有机-无机复合固体酸PSA / K-ZrP-的结构和属性X进行了表征通过XRD，FTIR，¹³为固体状态NMR，TG，N ₂吸附-脱附，SEM，吡啶吸附FTIR和XPS技术. 表征结果表明，用的ZrP KH560可以结合和促进PSA的接枝K-的ZrP的表面上通过其环氧环与PSA中酚羟基的缩合反应。因此，PSA/K-ZrP-2在所测试的H ₃ PW ₁₂ O ₄₀、Amberlyst-45、HBEA、HZSM-5、ZrP、AlCl ₃和FeCl ₃催化剂中在甘油和乙酸甲酯之间的酯交换中表现出优异的性能和稳定性. 计算的甘油转化率达到 81.3%，对单醋精 (MAG) 和双醋精 (DAG) 的选择性为 97.9%，[H ⁺ ]剂量为 2.2%，在 100 °C 下 4 小时。PSA/K-ZrP-2的最高比活在较短的反应时间内（0.17 h）达到24028.2 mg-glycerol/g-cat/h，且可循环使用5次而无明显失活。