【摘要】 以葡聚糖为软模板制备了多孔AgRu合金催化剂,利用X射线衍射仪和扫描电镜仪对其结构和形貌进行表征,并研究了其催化性能。结果表明,6种催化剂的催化产氢活性次序为Ag_9.2Ru>Ag_3.6Ru>Ag_4.0Ru>Ag_13.5-Ru>Ag_21.3Ru>Ag_22.4Ru。银钌原子比和催化剂形貌共同影响催化剂性能。其中选用Ag_9.2 Ru催化剂考察了NaBH₄和NaOH的质量分数对产氢速率的影响,研究结果表明,随NaBH₄和NaOH质量分数的增加,催化产氢速率降低。更多还原

【Abstract】 Porous Ag-Ru alloy catalysts were synthesized with dextran as soft template.The characterizations of catalysts were studied by XRD and SEM,and the activity on hydrogen generation rate decreased in the following order Ag_9.2Ru>Ag_3.6Ru>Ag_4.0Ru>Ag_13.5Ru>Ag_21.3Ru>Ag_22.4Ru.The performance of the catalysts was influenced by the atom ratio of Ag to Ru and catalyst form.The influences of concentration of NaBH₄ and NaOH on hydrogen generation rate with Ag_9.2Ru catalyst were studied,indicating that the hydrogen generation rate decreases as the concentration of NaBH₄ and NaOH raising.更多还原