绿色化学案例库建设-以生物基对二甲苯的制备为例

Construction of Green Chemistry Case Library-Taking the Preparation ofBiobased p -Xylene as an Example

为加强高校与公司的产学研合作,根据绿色化学课程建设现状,及时更新完善教学内容,建设生物质资源开发与利用知识点案例。利用可再生资源直接合成生物基对二甲苯,对促进可再生生物质资源的高效利用和高价值生物基化学品的开发具有重要的科学意义和潜在的应用价值。这项工作旨在证明对二甲苯(石化工业中一种重要的高附加值化学品)可以由生物基衍生物选择性合成。这种新的可控转化过程是通过甲基呋喃的选择性催化热解制备对二甲苯实现的。在优化的反应温度下,对二甲苯的选择性最高(PX/X=94.5%),收率最高(18.4%)。同时,提出了一种生物基衍生物可控催化转化为生物基对二甲苯的可能反应路线。

To strengthen the cooperation between universities and companies in industry,academia,and research,based on the current situation of green chemistry course construction,timely update and improve teaching content,and build knowledge point cases for biomass resource development and utilization.The direct synthesis of bio based para xylene from renewable resources has important scientific significance and potential application value in promoting the efficient utilization of renewable biomass resources and the development of high-value bio based chemicals.This work aims to demonstrate that p-xylene(an important high-value added chemical in the petrochemical industry)can be selectively synthesized from bio based derivatives.This new controllable conversion process is achieved through the selective catalytic pyrolysis of methylfuran to prepare p-xylene.Under optimized reaction temperature,the selectivity for xylene is highest(PX/X=94.5%)and the yield is highest(18.4%).Meanwhile,a possible reaction route for the controllable catalytic conversion of bio based derivatives to bio based para xylene was proposed.