The morphology and structure of product was exeminationed by TEM.the result show that the type and use level of catalyst. compositon of liquid,static or flowing liquid can affect produt greatly.

• 结果表明催化剂及掺杂物的种类与用量、液相组成及其流动或静止等制备因素均对产物的形态和数量有很大影响。