碳化物修饰的有序介孔炭的制备及其催化肼分解性能  

Preparation of Metal Carbide Imbedded Ordered Mesoporous Carbon and Its Catalytic Properties for N_2H_4 Decomposition

作　　者：王辉[1,2] 张慧[1,2] 王爱琴[1] 张涛[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国石油化工股份有限公司上海石油化工研究院,上海201208

出　　处：《催化学报》2010年第9期1172-1176,共5页

基　　金：国家杰出青年基金(20325620);国家自然科学基金(20673116;20773124)

摘　　要：以间苯二酚和甲醛为炭源,F127(EO106PO70EO106)为结构导向剂,在酸性水/乙醇溶液中引入(NH4)6Mo7O24.4H2O或(NH4)2WO4溶液,经静置自组装形成凝胶,再于N2中焙烧即合成出金属碳化物修饰的有序介孔炭材料.结果表明,金属离子的种类和用量对碳化物的分散度和介孔炭的有序度影响很大.通过控制金属离子的用量可制备出粒径为3～5nm且高度分散在介孔炭骨架中的碳化物粒子.与分步浸渍法相比,一步法制备的碳化物具有更高的分散度和催化肼分解活性.A metal carbide imbedded ordered mesoporous carbon（MC-OMC） material was synthesized by direct carbonization of a self-assembled composite that was made from F127（EO106PO70EO106）,resorcinol-formaldehyde,and（NH4）6Mo7O24.4H2O or（NH4）2WO4 in an acidic medium of aqueous ethanol solutions.The type and amount of the metal ions have a great influence on ordering degree of the resulting materials.Metal carbide particles with uniform size of 3-5 nm are highly dispersed on the pore wall of the carbon structure.The prepared MoC-OMC has excellent activity for direct N2H4 decomposition.The strong interaction between Mo7O24^6-and the resin plays an important role in the synthesis of this material.

关 键 词：有序介孔炭 碳化钼 碳化钨 肼 催化分解 

分 类 号：O643.36[理学—物理化学]