稀土钼酸盐类石墨烯结构可控制备与催化氧化性能研究

项目名称： 稀土钼酸盐类石墨烯结构可控制备与催化氧化性能研究

项目编号： No.21303118

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 沈铸睿

作者单位： 天津大学

项目金额： 25万元

中文摘要： 无机类石墨烯结构材料的合成与应用是当前材料领域的研究热点,但有关稀土钼酸盐类石墨烯结构材料的合成与性质研究极为少见。研发高比表面积稀土钼酸盐类石墨烯结构材料有望提供一类较高活性的催化材料。本项目拟通过水热反应与超声剥离相结合的方法，优化各类反应参数，制备产率高、厚度（层数）均一、缺陷少的稀土钼酸盐类石墨烯结构材料。并实现所得材料结构和组成的有效调变，获得一系列具有不同截面尺寸和形貌、厚度（层数）以及组成的稀土钼酸盐类石墨烯结构材料。总结一套简便、可靠的稀土钼酸盐类石墨烯结构高质量可控制备方法。进而以甲醇选择性氧化制甲醛为模型反应，研究所得各种稀土钼酸盐类石墨烯结构的催化氧化性能，总结其结构和组成参数与催化反应转化率、选择性、TOF和催化剂寿命等参数的关联规律，筛选出几种具有较高催化活性的稀土钼酸盐类石墨烯结构材料。为新型无机类石墨烯结构材料的研发及其在催化领域的应用提供科学依据。

中文关键词： 稀土钼酸盐；层状结构；无机类石墨烯结构；催化；

英文摘要： Fabricating graphene-like inorganic materials and applying them in proper fields is one of the most attractive topics of materials research, while there are very few reports about the graphene-like lanthanide molybdates. It will offer a kind of high active catalysts to develop the graphene-like lanthanide molybdates which have high surface area. As a result, in this proposal, we plan to fabricate graphene-like lanthanide molybdates by ultrasonic exfoliation after a hydrothermal reaction step. The reaction parameters will be carefully tuned to obtain the graphene-like materials with high yields, unique thickness (layers) and low defects. Furthermore, the morphology and compositions of graphene-like lanthanide molybdates will be extensively modulated and series of products with different lateral size /morphology, thickness (layers) and compositions will be obtained. From these work, a simple and reliable method for high quality and tunable fabrication of graphene-like lanthanide molybdates will be summarized. Then, catalytic oxidation properties of graphene-like lanthanide molybdates will be studied, and the reaction of methanol selective oxidation to formaldehyde will be chosen as the model system. During this process, the relationship between structural and composition parameters of graphene-like materials and t

英文关键词： lanthanide molybdate；layered structure；inorganic graphene-like materials；catalysis；