摘要
采用三聚氰胺诱导的"金属-载体强相互作用"工艺合成了具有Pt@TiO_(x)包覆结构的新型铂催化剂(Pt@TiO_(2)),并利用XRD、TEM、XPS和EPR对其进行表征分析。结果表明,Pt@TiO_(2)催化剂表现出强于传统Pt/TiO_(2)催化剂的热稳定性和丙烷、丙烯氧化活性。即使经过800℃高温处理,Pt@TiO_(2)仍能在较低温度实现丙烷(T_(50)=312℃)、丙烯(T_(50)=237℃)的催化燃烧,在煤化工尾气挥发性有机物(VOCs)净化领域展现出较强的应用潜力。
Pt@TiO_(2) catalysts with core-shell like Pt@TiO_(x) structure are synthesized through a melamine-induced SMSI-related strategy,and analyzed by XRD,TEM,XPS and EPR.Results show Pt@TiO_(2) exhibits significantly better thermal stability and activities for the combustion of propane and propylene than conventional Pt/TiO_(2) catalysts.Although Pt@TiO_(2) has been treated at 800℃,it still ignites propane and propylene at 312℃and 237℃respectively,indicating its high practical potential in the VOCs elimination of the coal chemical industry.
作者
马静
方子昂
林静
马子然
王红妍
王宝冬
刘爽
MA Jing;FANG Zi-ang;LIN Jing;MA Zi-ran;WANG Hong-yan;WANG Bao-dong;LIU Shuang(National Institute of Clean-and-Low-Carbon Energy,CHN Energy,Beijing 102211,China;School of Materials Science and Engineering,Ocean University of China,Qingdao 266100,China)
出处
《现代化工》
CAS
CSCD
北大核心
2022年第9期120-124,共5页
Modern Chemical Industry
基金
国家能源集团科技项目(ST930021005C)
国家自然科学基金(22076176)
山东省高等学校青创科技支持计划(2019KJD001)
中央高校基本科研业务费(202042002,202141008)。
关键词
铂催化剂
金属-载体强相互作用
VOCs催化燃烧
热稳定性
铂位点电子状态
Pt-based catalyst
strong metal-support interaction
catalytic combustion of VOCs
thermal stability
electronic state of platinum site
