膜反应器中甲烷部分氧化制合成气中La、Fe及Zn掺杂对YBa2Cu3O7-δ膜稳定性的影响  

Influence of La,Fe,Zn doping on stability of YBa2Cu-3O7-δ membrane in conversion of methane to syngas by partial oxidation in membrane reactor

作　　者：贾庆超 梁艳美 胡捷 Jia Qingchao;Liang Yanmei;Hu Jie(College of Food Science and Engineering,Zhengzhou University of Science and Technology,Zhengzhou Henan 450064,China;Department of Computer Science and Information Engineering,Anyang Institute of Technology,Anyang Henan 455000,China;College of Material and Chemical Engineering,Henan University of Engineering,Zhengzhou Henan 451191,China)

机构地区：[1]郑州科技学院食品科学与工程学院,河南郑州450064 [2]安阳工学院计算机科学与信息工程学院,河南安阳455000 [3]河南工程学院材料与化学工程学院,河南郑州451191

出　　处：《石油化工》2020年第4期315-320,共6页Petrochemical Technology

摘　　要：以Ni/ZrO2为催化剂,利用钙钛矿材料YBa2Cu3O7-δ,将La替代Y、Fe和Zn替代部分Cu制备了透氧膜,在反应温度875℃、反应时间300 min条件下进行CH4部分氧化制合成气反应,考察了透氧膜的稳定性;采用XRD,SEM,EDS等方法对反应前后的透氧膜进行了表征。实验结果表明,以La替代Y后会使膜材料的稳定性变差,且随着La含量的增加,破坏性更加严重;Fe替代部分Cu后不会改善膜的稳定性,并产生了S元素污染;Zn替代部分Cu后膜的横向结构没有受到破坏,膜结构仍保持原来的晶粒结构,可改善膜的稳定性。掺入一些电极电位较低的元素的膜透氧量高低及催化反应效果是下一步研究的重点。The stability of YBa2Cu3O7-δ membrane with Y being replaced by La and Cu being replaced by Fe and Zn respectively was investigated in syngas preparation by CH4 partial oxidation in membrane reactor,wherein the reaction lasted for 300 min at 875 ℃ with Ni/ZrO2 as catalyst. The membrane before and after reaction was characterized by XRD,SEM and EDS. The results showed that the stability of membrane became worse when Y was replaced by La,and the higher La content was,the worse the stability was. The stability of membrane could not be improved when Cu was replaced by Fe,moreover,sulphur element was also discovered after reaction. The horizontal interface of membrane was not destroyed and the original grain structure was kept when Cu was replaced by Zn which means Zn could improve the stability of the membrane. So the oxygen permeability and catalytic effect of the membrane doped with some elements with low potential would be the focus of study.

关 键 词：钙钛矿材料 部分氧化 元素掺杂 膜稳定性 

分 类 号：TQ426.94[化学工程]