“溶解-再结晶”技术在提升分子筛材料催化性能方面的应用  

Updating the Catalytic Performance of Zeolite Materials by Employing “Dissolution-Recrystallization” Technology

作　　者：夏长久[1,2] 彭欣欣[1] 林民[1] 朱斌[1] 舒兴田[1] 

机构地区：[1]中国石化石油化工科学研究院石油化工催化材料与反应工程国家重点实验室,北京100083 [2]斯德哥尔摩大学材料与环境化学学院,瑞典斯德哥尔摩s10691

出　　处：《石油学报（石油加工）》2016年第4期830-840,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：Swedish Research Council(VR);国家重点基础研究发展计划"973"项目(2006CB202500.7-22)资助

摘　　要："溶解-再结晶"技术在分子筛基催化材料制备中获得了广泛的应用,并成功推广到工业过程。利用水热环境中晶体母体"溶解"和"再结晶"同时发生的特点,可以实现产生封闭晶内空心结构或开放介观孔道、包埋纳米金属颗粒、插入金属原子到骨架位置和转变分子筛拓扑结构等目标。引入的多级孔道结构有助于反应物和产物分子的晶内扩散;包埋的金属纳米粒子抗烧结性能提高;而金属原子再插入和转变晶体拓扑结构分别可以强化制备杂原子分子筛或者用传统方法难以合成的分子筛。笔者详细介绍了各种类型材料的制备原理与方法,为"量体裁衣"式制备催化材料提供了新的思路。The “dissolution-recrystallization” technology has been widely used in the preparation of zeolite-based catalytic materials both in lab and at industrial scale. By taking advantages of this technology, several important goals, such as the creation of both constrained and open hierarchical porosity, encapsulation of nano metal particles （NPs） , re-incorporation of metal atoms into zeolites, framework and the crystalline transformation, have been achieved. The hierarchical network is preferential for the mass transfer inside zeolite crystal. Re-incorporation and transformation of zeolites provide an effective and novel route to synthesize the unusual zeolites being hardly prepared by conventional method. Thus, this review gives some great suggestions in tailoring the zeolite-based catalysts.

关 键 词：“溶解-再结晶” 多级孔 包埋 再插入 转晶 

分 类 号：O643[理学—物理化学]