Palladium supported on low-surface-area fiber-based materials for catalytic oxidation of volatile organic compounds
Palladium supported on low-surface-area fiber-based materials for catalytic oxidation of volatile organic compounds
复制标题
低表面积纤维基材料负载钯用于挥发性有机化合物的催化氧化
DOI：
10.1016/j.cej.2018.04.184
复制
发表时间：
2018-09-15
影响因子：
15.1
通讯作者：
Zhang, Changbin
中科院分区：
文献类型：
--
作者：
Deng, Hua;Kang, Shunyu;Zhang, Changbin
采用超声波辅助浸渍法，分别在经过水、硫酸和硝酸浸取处理的陶瓷和玻璃纤维载体上制备了纤维基钯催化剂。接着测试所制备的催化剂用于苯的催化燃烧。Pd-陶瓷纤维在苯转化率和二氧化碳产率方面表现出比Pd-玻璃纤维更好的活性，并且0.8wt%的Pd负载量是最佳负载量。采用FE-SEM、BET、XRD、XPS、TEM、原位DRIFTS和TPD等手段对催化剂进行了表征。结果表明，陶瓷纤维基催化剂具有较大的比表面积、较强的载体酸性、较好的分散性以及良好的氧化还原和脱附性能。我们的研究结果表明，钯陶瓷纤维催化剂是一个有效的候选人，用于消除挥发性有机化合物的应用。
Fiber-based palladium catalysts were synthesized via an ultrasonic-assisted impregnation method on ceramic and glass fiber supports pretreated by leaching with water, sulfuric acid and nitric acid, respectively. The as-prepared catalysts were next tested for the catalytic combustion of benzene. The Pd-Ceramic fiber exhibited better activity than Pd-glass fiber in terms of benzene conversion and carbon dioxide yield, and 0.8 wt% Pd loading was the optimum loading amount. The prepared catalysts were characterized by FE-SEM, BET, XRD, XPS, TEM, in situ DRIFTS and TPD. The results indicated that a relatively large surface area, strong support acidity, well-dispersed Pd particles, and suitable redox and desorption properties all contributed to the good performance of ceramic-fiber-based catalysts. Our findings demonstrate that the Pd-Ceramic fiber catalyst is an effective candidate for application in elimination of volatile organic compounds.