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3D二硫化钼/石墨烯组装体的制备及其催化脱硫性能

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Indexed by:期刊论文

Date of Publication:2014-04-01

Journal:新型炭材料

Included Journals:SCIE、EI、PKU、ISTIC、CSCD

Volume:29

Issue:2

Page Number:81-88

ISSN No.:1007-8827

Key Words:石墨烯;组装体催化剂;二硫化钼;羰基硫;加氢脱硫

Abstract:采用水热合成法,原位一步还原硫钼酸铵/氧化石墨前驱体,得到三维的二硫化钼/石墨烯(3D-MoS2/G)组装体催化剂。通过X-射线衍射仪、傅里叶变换红外光谱仪、拉曼光谱仪、场发射扫描电镜、透射电镜以及低温氮吸附等手段对其结构和形貌进行表征。以羰基硫( COS)的催化加氢转化为评价指标,对比研究微波处理前/后组装体催化剂的加氢脱硫性能。与传统硫化法制备的MoS2/γ-Al2 O3催化剂相比,经微波处理的水热一步法构筑的3D-MoS2/G-160M组装体显示出优异的催化加氢脱硫活性,在较低的反应温度下(260℃),COS转化率即可达100%。这种优异的催化性能归结为三维组装体的特殊结构及高度分散在其石墨烯片层上的MoS2纳米晶的共同作用。

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