Faculty of Technology, Jacob of Paradies University, Chopina 52, 66-400 Gorzow Wielkopolski, Poland.
Int J Mol Sci. 2023 Jan 31;24(3):2689. doi: 10.3390/ijms24032689.
This paper presents the results of tests obtained for the transformation of geraniol in the presence of garnet as a catalyst by the response surface method (RSM). The method analyzed the influence of the following parameters: a temperature of 50-150 °C, a catalyst concentration (garnet) of 1.0-10.0 wt% and a reaction time of 0.25-24 h. Response functions included the conversion of geraniol (GA), selectivity for conversion to neral (NE) and selectivity for conversion to citronellol (CL). In addition, the influence of all control parameters on each of the response parameters is presented in the form of second-order polynomials. The optimal parameters of the geraniol transformation process were a temperature of 55 °C, a catalyst concentration of 5 wt% and a reaction time of 2 h, for which high values of the GA conversion function and the selectivity of conversion to NE and CL were obtained. For the GA conversion, the optimum was obtained at 94 mol% at 60 °C, a catalyst concentration of 5.0 wt% and a reaction time of 2 h. For NE selectivity, the optimum value was reached at 49 mol% at 60 °C, a catalyst concentration equal to 2.5 (5.0) wt% mole and a reaction time of almost 2 h. For CL selectivity, the optimum value of 49 mol% was obtained for control factors: a temperature equal to 20 °C, a catalyst concentration equal to 5.0 wt% and a response time equal to 2 h. The optimal set of control factors for all power factors is characterized by a temperature of 55 °C, a catalyst concentration of 5 wt% and a reaction time of 2 h.
本文介绍了在石榴石作为催化剂存在的情况下，通过响应面法（RSM）对香叶醇转化的测试结果。该方法分析了以下参数的影响：温度为 50-150°C，催化剂浓度（石榴石）为 1.0-10.0wt%，反应时间为 0.25-24h。响应函数包括香叶醇（GA）的转化率、转化为橙花醛（NE）的选择性和转化为香茅醇（CL）的选择性。此外，还以二次多项式的形式呈现了所有控制参数对每个响应参数的影响。香叶醇转化过程的最佳参数为温度 55°C、催化剂浓度 5wt%和反应时间 2h，在此条件下，GA 转化率函数和 NE、CL 转化率的选择性均获得了较高的值。对于 GA 转化率，在 60°C、催化剂浓度 5.0wt%和反应时间 2h 时，获得了最佳的 94mol%。对于 NE 选择性，在 60°C、催化剂浓度等于 2.5（5.0）wt%摩尔和反应时间接近 2h 时，达到了最佳的 49mol%。对于 CL 选择性，在控制因素温度等于 20°C、催化剂浓度等于 5.0wt%和反应时间等于 2h 时，获得了最佳的 49mol%。对于所有功率因素的最佳控制因素集，其特征在于温度为 55°C、催化剂浓度为 5wt%和反应时间为 2h。
