Synthesis of 2-methylpyrazine from cyclocondensation of ethylene diamine and propylene glycol over p

来源 :Chinese Chemical Letters | 被引量 : 0次 | 上传用户:yefenggege
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The 2-methylpyrazine was synthesized by catalytic reaction of ethylene diamine and propylene glycol at 380℃.The alumina supported copper catalysts with promoter were prepared by impregnation method,characterized by ICP-AES,BET and TPR.The results demonstrated that the dehydrogenation was improved by addition of chromium promoter.The selectivity of 2-methylpyr- azine reached 84.75%,while the conversions of reactants were also enhanced. The 2-methylpyrazine was synthesized by catalytic reaction of ethylene diamine and propylene glycol at 380 ° C. The alumina supported copper catalysts with promoter were prepared by impregnation method, characterized by ICP-AES, BET and TPR. The results showed that the dehydrogenation was improved by addition of chromium promoter. The selectivity of 2-methylpyr azine reached 84.75% while the conversions of reactants were also enhanced.
其他文献
靖江市十圩套闸坐落于十圩港通江口的咽喉之地,通航能力为500吨级,年吞吐量为600万吨,管理所分甲、乙两班轮流作业,闸费年收入最高达360万元,在全市套闸中名列前茅。但就在这
在和风劲吹的十届全国人大三次会议上,胡锦涛总书记参加新疆代表团审议时指出,构建社会主义和谐社会,要求我们牢固树立马克思主义民族观、宗教观,全面贯彻党的民族政策和宗教
AThe women’s club always had a meeting every Friday afternoon.Once a professor from the university came to talk to them about an important problem after they h
语言的任意性是语言学研究中较有影响的观点之一。但是随着认知语言学,特别是概念隐喻研究的发展,越来越多的研究表明语言不仅是任意的,而且更重要的是有理据的。本文首先对
奥运会是一场人类庆典,是全球最具影响力、亲和力的盛事,也是汇聚全球目光、震撼人类情感、感悟人生意义的舞台。2008年北京奥运会承百年奥运之基业、汇东西方文化之精粹、展
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
涉嫌贪挪近亿元,当庭屡称“记不清”——曾任银河证券北京望京西园营业部总经理的杨彦明,因涉嫌贪污挪用公款出庭受审。“被指控贪污、挪用公款8400余万元”,案发后两次试图
副班长章翊负责班费管理,办事能力很强,但却喜欢耍小性子,其负责的廊道文化布置大获好评,却花费颇多,到打印社一打听才知道原来章翊从中赚取了回扣。中学版案例《副班长的回
科学把握示范活动的工作重点和主要内容开展示范活动是推进老年社会福利事业发展的重要手段,作为试点单位一定要坚持内容与形式的统一,着重从以下四个方面开展工作:一是研究
目的:探讨头孢噻肟治疗心肌梗死、糖尿病、冠心病及脑梗死合并呼吸道感染应用疗效观察。方法通过对2012年5月~2013年5月在本院进行治疗的80例心肌梗死、糖尿病、冠心病及脑梗