Relationship between the reducibility and selectivity of CeMo_xV_(1-x)O_4 catalysts by kinetic param

来源 :Journal of Natural Gas Chemistry | 被引量 : 0次 | 上传用户:sk_only
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
CeVO4, CeMo0.01V0.99O4 and CeMo0.03V0.97O4 were prepared by co-precipitation method. The addition of molybdenum as promoter shows a positive effect on the catalytic behavior of CeVO4 in oxidative dehydrogenation of propane to propylene. The reduction behaviors of the catalysts were characterized by temperature-programmed reduction. The activation energies of reduction process for the catalysts were obtained at different reduction rates by Kissinger method. The addition of Mo to CeVO4 enhances the selectivity to propylene. CeVo4, CeMo0.01V0.99O4 and CeMo0.03V0.97O4 were prepared by co-precipitation method. The addition of molybdenum as promoter shows a positive effect on the catalytic behavior of CeVO4 in oxidative dehydrogenation of propane to propylene. The reduction behaviors of the The activation energies of reduction process for the catalysts were obtained at different reduction rates by Kissinger method. The addition of Mo to CeVO4 enhances the selectivity to propylene.
其他文献
进入七十年代以来,我省平原绿化有了很大发展。“六五”期末平原林木覆盖率提高到7%左右,其中32个(现已达40个)县(市)已经达到林业部颁平原绿化标准。平原绿化的发展改善了平
Ayear has passed since that terrible night on the road to Sici-ly,but for Reg Green and his wife,Maggie,the pain isalways there.He is 66,a British-born journal
Big Ben 是向全世界报告标准时间的大钟,安装在伦敦泰晤士河畔议会大厦东北角的钟楼(the Clock Tower)的顶端,每隔15分钟报时一次。说起 Big Ben 这个名称的来历,还有段有趣
公交车终于来了,上车后我习惯性地冲到垃圾桶旁,支好小马扎。坐下后,便掏出书来,没几分钟,我便沉浸在书海之中。  这个小马扎是阿海送给我的。那是個阴雨连绵的日子,放学后,好不容易挤上公交车,在车门关闭的瞬间,我脚下一滑,书包被车门夹住了。书包的挎带勒住了我的脖子,我怎么也挣脱不开。  正在我不知所措之际,阿海挤了过来,把我的胳膊从书包的挎带里抽了出来,然后让司机把车门打开。见我没事之后,他转身回到垃
期刊
自从提出了新课程改革,各类教育人士就一直在强调理论知识与生活实践相结合的重要性.素质教育要求教育要生活化、实用化,提高学生的综合素质.生物作为高中教学的重点学科,教
液晶显示器件已广泛使用于红外和其他光电子仪器设备中,有许多优点。很受用户欢迎。 石家庄电光电子有限公司是一家专业生产TN型LCD的中外合资企业。公司具有国内一流的引进
音乐欣赏教学是音乐课堂教学的重要组成部分,音乐欣赏分三个层次:官能的欣赏、情感的欣赏、理智的欣赏.本文就新课程理念下音乐欣赏课谈了几点体会:发挥学生的想象力;尊重学
《语文课程标准》明确提出:“学生是学习语文的主人。语文教学应激发学生的学习兴趣,注重培养学生自主学习的意识和习惯,为学生创造良好的自主学习情境,尊重学生的个体差异,
A field experiment was conducted to investigate the variations in denitrification losses and N2O emissions from 4 different types of nitrogen fertilizers (urea,
China’s Semi-annual Report on Economy in the first half of 2010 keeps gratifyingachievements-China’s economy saw a year-on-year increase of 11.1%,getting rid