【摘要】 设计了一种连续流动微通道反应器，用于通过环己烷的催化氧化制备KA油（环己酮和环己醇的混合物），采用水热法合成的铈锰钴复合氧化物（CeMnCoO_x）作为催化剂，氧气作为氧化剂。通过扫描电子显微镜、透射电子显微镜、X射线衍射分析和X射线光电子能谱等表征技术，证实了催化剂具有优异的均匀性、比表面积以及稳定的晶体结构和化学组成。将催化剂负载在玻璃珠上并填充到反应管中形成微通道，增加了界面接触面积，提升了反应效率。研究了填充直径、反应温度、压力、氧气流量和停留时间对反应的影响。结果表明，在填充直径为1.0～1.5 mm、液体流速为0.1 mL·min^-1、氧气流量为40 mL·min^-1、反应温度为160℃、压力为1.0 MPa的条件下，停留时间约为32 min，环己烷转化率达到11.88%,KA油收率达到5.43%。与传统的间歇式工艺相比，该连续流微通道反应器显著缩短了反应时间，提高了生产效率，为KA油的高效生产提供了新途径。更多还原

【Abstract】 In this study,we designed a continuous-flow microchannel reactor for the prepararion of KA oil（a mixture of cyclohexanone and cyclohexanol） through catalytic oxidation of cyclohexane. A ceriummanganese-cobalt composite oxide（CeMnCoO_x） catalyst,synthesized by a hydrothermal method,was employed with oxygen as the oxidant. Characterization techniques including SEM,TEM,XRD,and XPS confirmed the catalyst’s excellent uniformity,high specific surface area,and stable crystal structure and chemical composition. The catalyst was loaded onto glass beads and packed into reaction tubes to form microchannels,which significantly enhanced the interfacial contact area and improved reaction efficiency.The effects of key parameters were systematically investigated, including packing diameter, reaction temperature,pressure,oxygen flow rate,and residence time. Under the optimized conditions of a packing diameter of 1.0-1.5??mm,liquid flow rate of 0.1??mL·min^-1,oxygen flow rate of 40??mL·min^-1,reaction temperature of 160??℃,and pressure of 1.0??MPa,the residence time was approximately 32??min,resulting in a cyclohexane conversion of 11.88% and a KA oil yield of 5.43%. Compared with conventional batch processes, this continuous-flow microreactor significantly reduces reaction time, improves production efficiency,and offers a promising route for efficient synthesis of KA oil.更多还原