【摘 要】
：
Liquid-phase epoxidation of styrene with atmospheric O_2 was conducted over CoAPO-5 molecular sieves.The catalytic performance of CoAPO-5 can be significantly i
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
Liquid-phase epoxidation of styrene with atmospheric O_2 was conducted over CoAPO-5 molecular sieves.The catalytic performance of CoAPO-5 can be significantly improved by alkali metal salt impregnated on it,and styrene conversion and selectivity to styrene oxide reached 85%and 69%respectively when CsCl was impregnated on it.The catalyst was recyclable and exhibited similar catalytic activity and selectivity even after three catalytic reaction cycles.
Liquid-phase epoxidation of styrene with atmospheric O_2 was conducted over CoAPO-5 molecular sieves. The catalytic performance of CoAPO-5 can be significantly improved by alkali metal salt impregnated on it, and styrene conversion and selectivity to styrene oxide reached 85% and 69 % respectively when CsCl was impregnated on it. The catalyst was recyclable and caught similar catalytic activity and selectivity even after three catalytic reaction cycles.
其他文献
本刊讯2011年11月3日1时35分58秒,神舟八号与天宫一号在距地球343km的太空,成功实现交会对接。为了这一成功对接,航天部门曾经在地面试验台进行过不下1000次模拟试验。太空环
俄罗斯幅员辽阔,油气资源遍布全境,但俄罗斯能源工业重心长期在西部地区,形成西重东轻的油气开采格局。东西伯利亚与远东地区资源储量丰富,但开发程度不高,储产比较低。在加
安络血引起癫痫样发作２例南昌市第一医院呼吸科（３３０００８）潘海燕，广平１病例报道例１，男，６０岁。因咳嗽、咯血痰１０余天而来我院诊治。入院时体检：Ｔ：３８．２Ｃ、Ｐ：９０次／ｍｉｎ、Ｒ：２０次／ｍｉｎ、ＢＰ：１４／７ｋＰａ，右下肺可闻及少量湿罗音，...
An network of
近来自身免疫与细胞程序性死亡之间是否存在相互联系及怎样的联系是个热点问题。本文综述了有关这一问题的最新进展。
It is a hot issue whether there is an interconnect
１５００ｍ高原运动训练对动脉氧饱和度和脉率的影响［英］／Ｓａｋａｉ．Ａ……／／ＡｖａｉｔＳＰａｃｅＥｎｖｉｒｏｎＭｅｄ．１９９４．Ｊａｎ，６５（１）．４１～４４．作者比较了两组男性在低度高原（６１０ｍ）和中度高原（１５００ｍ）的运动训练对动脉氧饱和度...
Effect of 1500m Altitude Exercise Training on Art
《诗渊》所收唐诗误署考徐容甫北京图书馆所藏明佚名纂辑《诗渊》残稿本，由书目文献出版社影印出版以来，在学术界产生了广泛的影响，尤其在唐宋诗词辑补方面，已一定程度上显示了它
我院自1986～1991年对上腹部饱胀/胀痛或上腹部有阻塞感的病人,排除了消化道、肝、肾疾病以及甲状腺术后、药物、碘治疗后的甲亢病人,而无典型甲减的症状和体征者进行检测。放
日前,中国石化洛阳分公司熔体直纺多孔异型细旦涤纶长丝开发新技术项目顺利通过了中国石化科技开发部的成果鉴定。鉴定结果表明,该项技术具有创新性,达到了国际先进水平。熔
用ＰＥＧ粗提血清中的ＩｇＧ刺激鼠甲状腺细胞（ＦＲＴＬ─５）株，测定释入培养液中的ｃＡＭＰ含量表示ＴＳＡｂ活性。所测ＴＳＡｂ活性，正常组为１００．１±４８．８％（ｎ＝１８，±ｓ）；１７例未治甲亢病组为１４４２．８±１１９８．１％，全部（１００％）ＴＳＡｂ阳性；１６例甲亢病复发组为１１４５．７±１２１７．７％，其中１４例（８７．５％）ＴＳＡｂ阳性；１０例甲亢病缓解组为１２４．２±８２．５％，其
约七十年前,笔者肄业宁波北门外四明中学高中部(美国浸礼会、长老会合办)时,即听说“天一阁”之名。曾慕名而往,一人由校步行至阁,但见小径瓦砾不平,乱草丛生,乌啼高树,一片