preparation and characterization of fe3o4@cu magnetic catalyst by solvothermal method
首发时间:2024-06-24
abstract:in order to reduce the heat transfer loss and solve the problem of slow dynamic response caused by external heating in the process of hydrogen production of methanol reforming, the micron-scale fe3o4@cu magnetic catalyst was prepared and studied in this paper. the morphology before and after coating was compared by scanning electron microscopy (sem), and its elemental composition was analyzed by xrd and xps. in addition, the hysteresis loop of the micron fe3o4@cu magnetic catalyst was measured and its magnetic and magnetothermal properties were calculated.the results show that the surface adhesion components of fe3o4 are cu, cu2o and cuo, among which cu(0) is the main active valence state for catalytic reaction. it can be seen from the hysteresis loop that fe3o4@cu has a certain heating capacity and can meet the energy supply requirements during the reaction process under certain conditions.
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溶剂热法制备fe3o4@cu磁性催化剂及表征
摘要:为降低甲醇重整制氢过程中,由于外部供热导致的传热损失和解决外部供热导致的动态响应慢的问题,本文研究并制备了微米级fe3o4@cu磁性催化剂,并通过sem扫描电子显微镜对其包覆前后形貌进行对比分析,使用xrd和xps分别对其元素组成进行分析。另外本文还测量了微米级fe3o4@cu磁性催化剂的磁滞回线,对其磁性能和磁热性能进行分析。结果表明:fe3o4表面附着成分有cu,cu2o和cuo,其中,cu(0)为催化该反应的主要的活性价态。由磁滞回线可知:fe3o4@cu具有一定的发热能力,在一定条件下,能够满足反应行进过程中的供能要求
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