Catalytic conversion of cellulose into ethylene glycol over nickel-promoted tungsten carbide

	Catalytic conversion of cellulose into ethylene glycol over nickel-promoted tungsten carbide
	Ji N(纪娜) ; Zheng MY(郑明远) ; Huang YQ(黄延强) ; Wang AQ(王爱琴) ; Zhang T(张涛)
	2011
会议名称	241st acs national meeting & exposition
会议日期	2011-3-27
会议地点	california
页码	242-0
通讯作者	张涛
中文摘要	in our previous work, we reported that ni-promoted tungsten carbide functioned as a highly active and selective catalyst for cellulose conversion.1 the catalytic performance was largely dependent on the support used. with active carbon as the support, the maximum yield of eg was about 61%. however, when a mesoporous carbon or a sba-15 as the support, the maximum yield of eg was increased up to 75%.2,3 in this work, we further studied the effect of preparation method, specifically, the impregnation sequence of ni and w, on the catalytic performance in cellulose conversion. for this purpose, a series of ni-promoted w2c catalysts were prepared by a post-impregnation method and evaluated for the catalytic conversion of cellulose into ethylene glycol. quite different from our previously reported ni-w2c/ac catalysts which were prepared by the co-impregnation method, the introduction of nickel by the post-impregnation method did not cause catalyst sintering but resulted in the re-dispersion of tungsten component, which was identified by characterization using xrd, tem, and co chemisorption. the highly dispersed ni-promoted w2c catalyst was found to be very active and selective for the cellulose conversion into ethylene glycol, with 100% conversion of cellulose and 73.0% yield of ethylene glycol. the underlying reason was attributed to the much better dispersion of active sites on the catalyst. with this post-impregnation method, we also prepared a series of other transition metals promoted tungsten carbide catalysts, and found that ru-promoted tungsten carbide gave a comparable activity and selectivity to ni-promoted one for the production of ethylene glycol from cellulose.
合作状况	分会特邀报告
会议主办者	美国acs
会议录	catalytic conversion of cellulose into ethylene glycol over nickel-promoted tungsten carbide
会议录出版者	待补充
会议录出版地	待补充
学科主题	物理化学
语种	英语
内容类型	会议论文
源URL	[http://159.226.238.44/handle/321008/115993]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
推荐引用方式 GB/T 7714	Ji N,Zheng MY,Huang YQ,et al. Catalytic conversion of cellulose into ethylene glycol over nickel-promoted tungsten carbide[C]. 见:241st acs national meeting & exposition. california. 2011-3-27.