Investigation of Mechanisms About Effects of Promoters P<sub>2</sub>O<sub>5</su

来源 :高等学校化学研究:英文版 | 被引量 : 0次 | 上传用户:tzjgy
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
We succeeded in designing an effective catalyst, V2O5-P2O5-K2O/Al2O3. SiO2, by which a high yield of PA,105wt% can be gained in middle-sized industrial fluidized bed apparatus without addition of any promoting gas.The mechanisms of effects of P2O5, K2O an
其他文献
焊接电弧和熔池是焊接过程中的两大组成部分,笔者以TIG焊接过程为对象,讨论了TIG焊接电弧和熔池计算机模拟的现状,分析了模拟过程中存在的问题,并指出将焊接电弧和熔池动态结
Pyrrololactam type of alkaloids was found in many marine sponges which belong to the family Axinellidae. In the course of our systematic research for bioactive
<正>异种钢(ZG35+40Cr)桥壳体是装载机中的一个重要焊接件,其焊接质量直接影响行车安全和工作可靠性.为进一步提高并稳定焊接质量,保证良好的焊缝成形,降低工人劳动强度,提高
The results of SCF CNDO-CO calculation on polymeric [(η5,μ-2,3-dihydro-1 , 3-di-borolyl)M](M= Cr, Mn, Fe, Co, Ni) indicate that polydecker sandwich compounds
There are more than 250 kinds of Zanthoxylum plants in the world, of which about 40 species grow in China. In last 30 years, nearly 80 kinds of the plants have
The mechanism of photocycloaddition reaction between 6-azauracll and acetone was studied by using semiemptrical SCFMO AMI method. It was found that this reactio
Recently, much attention has been focused on the use of neutral carrier species as membrane components to extract ions from aqueous solution into a hydrophobic
Introduction Liquid crystals without a double bond bridge between two rings in the linear molecule are more stable chemically and photochemically. Alkyl cyanobi
永川区人大常委会针对本区的经济社会存在的问题,结合“代表行动”,开展了十项课题调研,其调研成果被有效运用,有力助推了永川发展。
在思茅松纯林和针阔混交林中,以(E,E)-2,4-癸二烯醛、(Z)-11-十六碳烯乙酸酯为引诱剂,对松实小卷蛾和微红梢斑螟进行了诱捕试验。结果表明,以(E,E)-2,4-癸二烯醛为引诱剂,在思茅松