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dc.contributor.authorHou, Yu-Huizh_CN
dc.contributor.authorLin, Yin-Liangzh_CN
dc.contributor.authorLi, Qizh_CN
dc.contributor.authorWeng, Wei-Zhengzh_CN
dc.contributor.authorXia, Wen-Shengzh_CN
dc.contributor.authorWan, Hui-Linzh_CN
dc.contributor.author翁维正zh_CN
dc.contributor.author夏文生zh_CN
dc.contributor.author万惠霖zh_CN
dc.date.accessioned2015-07-22T03:20:15Z
dc.date.available2015-07-22T03:20:15Z
dc.date.issued2013zh_CN
dc.identifier.citationCHEMCATCHEM, 2013,5(12):3725-3735zh_CN
dc.identifier.otherWOS:000327424500041zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/88710
dc.descriptionMinistry of Science and Technology of China [2010CB732303]; National Natural Science Foundation of China [21033006, 21373169]; NFFTBS [J1310024]; Program for Changjiang Scholars and Innovative Research Team in the University [IRT1036]zh_CN
dc.description.abstractThe direct transformation of methane, such as oxidative coupling of methane (OCM), is a long-standing challenge in methane utilization. Keeping this objective in mind, we explored the dispersion and acid-base effects of the catalysts on OCM. Herein, we prepared a series of La2O3/MgO catalysts by using a modified impregnation method with polyvinylpyrrolidone added to impregnated solutions. The BET, XRD, SEM, and TEM characterizations of the samples confirm that La2O3 dispersion on MgO increases with the addition of polyvinylpyrrolidone and the particles become smaller in size and more uniform in distribution. High catalytic performances (e.g., the C-2 yield approximate to 16%) of the well-dispersed La2O3/MgO catalysts for OCM are demonstrated at a lower temperature (e.g., 550 degrees C) and a lower loading (e.g., 1.9wt%). In addition, with the modification of acid-base properties of the supports, we find that base properties of the supports are responsible for C-2 formation and acidic properties of the supports are responsible for COx formation. These properties establish a good correlation of the dispersion and basicity of the catalysts with the catalytic performances of the catalysts for OCM.zh_CN
dc.language.isoen_USzh_CN
dc.publisherWILEY-V C H VERLAG GMBHzh_CN
dc.source.urihttp://dx.doi.org/10.1002/cctc.201300667zh_CN
dc.subjectOCM REACTIONzh_CN
dc.subjectSELECTIVE OXIDATIONzh_CN
dc.subjectACTIVE-SITESzh_CN
dc.subjectOXIDESzh_CN
dc.subjectOXYGENzh_CN
dc.subjectCO2zh_CN
dc.subjectFORMALDEHYDEzh_CN
dc.subjectPERFORMANCEzh_CN
dc.subjectCONVERSIONzh_CN
dc.subjectSRzh_CN
dc.titleEffects of Polyvinylpyrrolidone on the Preparation of Supported La2O3 Catalysts by a Modified Impregnation Method for the Oxidative Coupling of Methanezh_CN
dc.typeArticlezh_CN


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