俞嘉睿,黄海霞,滕礼扬,董傲轩,蒋英,肖客松,吴雪平,张先龙

• 1:合肥工业大学化学与化工学院
• 2:合肥工业大学分析测试中心
• 3:安徽省先进复合材料设计与应用工程研究中心
• 4:高值催化转化与反应工程安徽省重点实验室

摘要(Abstract)：

为了实现对废弃流化催化裂化催化剂(FCC)的高值化再利用，提出采用高能球磨法，将炭黑颗粒均匀负载在废FCC(SFCC)表面，并调控炭黑的负载量，通过高温烧结得到陶瓷/碳复合材料。文中采用X射线衍射、扫描电子显微镜和矢量网络分析仪等手段对陶瓷/碳复合材料进行表征，考察了炭黑负载量对陶瓷/碳复合材料吸波性能的影响。结果表明，烧结后生成的陶瓷基体使得复合材料阻抗匹配优异，而炭黑颗粒均匀分散在复合材料基体中构成导电网络，为复合材料提供介电损耗。当炭黑负载量为8%(质量分数)时，在1 300℃烧结制备的陶瓷/碳复合材料具有优异的微波吸收性能。当匹配厚度为3.1 mm时，最小反射损耗值达到-49.93 d B;当匹配厚度为2.0 mm时，最大有效吸收带宽可达到5.2 GHz。这主要得益于复合材料内部的极化效应、电导损耗和良好的阻抗匹配。此外，废催化剂中含有的重金属经过烧结后转化为尖晶石得以固定在复合材料中，实现了对SFCC催化剂的无害化处理。

关键词(KeyWords)： SFCC催化剂;炭黑;烧结;陶瓷/碳;吸波性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51872070)

作者(Author): 俞嘉睿,黄海霞,滕礼扬,董傲轩,蒋英,肖客松,吴雪平,张先龙

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