Nano-sized Beta zeolites, with a crystal size of 80–100 nm, were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acet... Nano-sized Beta zeolites, with a crystal size of 80–100 nm, were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acetic anhydride than theconventional zeolites of largeparticle size.The smallcrystalsize of nano-sized zeolitesmay bringon more accessible activesites and then enhance the catalytic activity. The exposed pore openings in nano-sized zeolites allow a fast desorption of heavy products from the catalyst and can then reduce the occupancy of active sites by the adsorption of products ,this can then alleviate the catalyst deactivation and improve the catalyst stability deactivation and improve the catalyst stability.
急用 在线等
拒绝用自动翻译 因为这个谁都会
如果有超级好用的自动在线翻译或软件也可以推荐
Anionsarecommonlyfoundintheenvironmentandbiologicalsy
引言 ---美国ni公司推出的labview语言是一种的面向对象的图形化编程语言,使用图标代替文本代码创建应
请帮忙翻译一句话,是用于公证书的:在2010年10月20日之前于ZG居住期间无任何刑事犯罪记录。希望翻译的
本人做论文,急求基于单片机半导体激光器脉冲驱动方面的英文文献,带中文翻译!不要中文直接翻译过来哦!是要英文
The linear dimensions of the far-field beam patterns
一些单词翻字典时,解释的太杂了,老是搞不定整句的翻译 可以在msdn上寻找相关源代码的文献进行翻译解释。
变频器的专业英文翻译是什么?我看了下,好象有好几种英文单词,在电气专业里面就是用得Z多的是哪个单词?我是销
工具检具的翻译 悬赏分:90 - 离问题结束还有 12 天 20 小时 这些工具都怎么翻译?
帮忙翻译一下这上边那些英文的意思。 正上方是振动监视器 左上是警告延迟,然后是不同数字代码延迟多少秒
磁翻板液位计用英语怎么翻译?有没有专业一点的说法? Magnetic level gauge 参考:ht