【摘 要】
：
多级孔分子筛因具有良好的水热稳定性、较大的孔体积和短的扩散距离而倍受关注.以L-赖氨酸为介孔造孔剂,采用低、高温两步晶化法可制备多级孔结构的TS-1分子筛,该方法首先通
【机 构】
：
太原理工大学省部共建煤基能源清洁高效利用国家重点实验室,太原理工大学化学化工学院
【基金项目】
：
山西省青年科学基金(201601D202032)。
论文部分内容阅读
多级孔分子筛因具有良好的水热稳定性、较大的孔体积和短的扩散距离而倍受关注.以L-赖氨酸为介孔造孔剂,采用低、高温两步晶化法可制备多级孔结构的TS-1分子筛,该方法首先通过低温晶化增加晶核数量,再在高温晶化中利用L-赖氨酸的限域作用使晶粒尺寸均一,最终制得形貌规则、高结晶度的多级孔TS-1分子筛.该分子筛的多级孔道结构有利于减小反应物和产物的扩散阻力,增大扩散速率,提高催化性能,其在苯直接氧化制苯酚反应中,苯转化率高达38.6％,苯酚收率为26.5％.
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