O-alkylation of a dihydric phenol (i.e., hydroquinone) with methanol in presence of benzoquinone catalyzed by double SO₃H functionalized Brønsted acidic ionic liquids (i.e., 1,3-disulphonic acid imidazolium hydrogen sulphate, 1,3-disulphonic acid benzimidazolium hydrogen sulphate, and sulphuric acid) is studied in a batch reactor. The sensitivity of activity and selectivity with reaction time, temperature, speed of agitation, and catalyst loading was examined. The plausible reaction pathways proposed based on the experimental observations and detailed kinetic investigation are performed by assuming a homogeneous reaction phase. The kinetic parameters, such as pre-exponential factor and activation energy, are estimated for both ionic liquids and sulphuric acid by considering all competitive reactions, and comparative results were presented. An extended form of the Arrhenius equation is used to estimate the kinetic parameters for the reaction which showed curvature in against a plot. The model prediction with the estimated kinetic parameters is in good agreement with the experimental data, which confirmed the model validity in the experimental operating range. It was found that ionic liquid has a potential application in the synthesis of a selective monoalkylated product of hydroquinone. The kinetic analysis performed is found to be useful in the understanding of process behaviour.

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SO3H官能化布朗斯台德酸性离子液体上甲醇烷基化氢醌的动力学研究

_{双SO 3}催化苯醌存在下二元酚（即对苯二酚）与甲醇的O-烷基化反应在间歇反应器中研究了 H 官能化布朗斯台德酸性离子液体（即 1,3-二磺酸咪唑硫酸氢盐、1,3-二磺酸苯并咪唑硫酸氢盐和硫酸）。检测了活性和选择性对反应时间、温度、搅拌速度和催化剂负载量的敏感性。基于实验观察和详细的动力学研究提出的合理反应途径是通过假设均相反应相来进行的。通过考虑所有竞争反应，估算了离子液体和硫酸的动力学参数，例如指前因子和活化能，并给出了比较结果。反对阴谋。用估计的动力学参数进行的模型预测与实验数据吻合较好，证实了模型在实验操作范围内的有效性。发现离子液体在合成对苯二酚的选择性单烷基化产物中具有潜在的应用价值。发现进行的动力学分析有助于理解过程行为。