刘海沛,李众,沈岳松,祝社民

• 1:江苏先进无机功能复合材料协同创新中心江苏先进生物与化学制造协同创新中心南京工业大学材料科学与工程学院

摘要(Abstract)：

我国每年产生大量的废弃脱硝催化剂,其安全处置和资源化利用迫在眉睫。钒钛脱硝催化剂中的TiO_2含量较高,以其作原料制备陶瓷,可实现高附加值利用。本文以包头某火电厂的蜂窝式废弃钒钛脱硝催化剂为原料,选取CuO、硼砂、Nb_2O_5 3种外加剂用于制备钛基陶瓷,通过样品体积密度、吸水率、抗压强度、抗弯强度、维氏硬度和有毒元素浸出率测试,研究3种外加剂对钛基陶瓷性能的影响。结果表明:CuO的掺杂不利于样品的致密化,掺杂2%硼砂可大幅度提高样品硬度;掺杂2%Nb_2O_5的样品综合性能最佳,有毒元素浸出率达到国家标准;利用以废弃钒钛催化剂为原料高温焙制陶瓷的方法,对有毒V元素的浸出起到了明显的固化效果。

关键词(KeyWords)： 废弃脱硝催化剂;钛基陶瓷;CuO;硼砂;Nb2O5;资源化;有毒元素;钒浸出率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51272105);; 江苏省环保厅科研项目(2013006);; 国家重点研发计划(2016YFC0205500);; 江苏省高校优势学科资助(PAPD)~~

作者(Author): 刘海沛,李众,沈岳松,祝社民

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