24小时热门版块排行榜    

查看: 578  |  回复: 2
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

hutu0920

铜虫 (正式写手)

[求助] PtSnNaLa/ZSM-5 catalysts制备中关于含量问题

PtSnNaLa/ZSM-5 catalysts were prepared by sequential impregnation method. The powder H-ZSM-5 (Si/Al = 120) was impregnated in an aqueous solution of 0.123 M La(NO3)3 at 80 8C for 4 h to obtain 0, 0.7, 1.4, 2.1 and 2.9 wt% La, then dried at 80 8C for 3 h under air flow. Afterwards, the samples were impregnated at 80 8C for 4 h in solutions mixture of 0.033 M H2PtCl6, 0.153 M SnCl4 and 0.427 M NaCl. Finally the prepared catalysts were dried at 80 8C for 3 h. The nominal compositions of the each sample were 0.5 wt% for Pt, 1.0 wt% for Sn, and 1.0 wt% for Na, respectively.
如上面文献所示,
首先,0.123 M La(NO3)3中的M指的是啥,是摩尔质量吗?
其次,, 0.7, 1.4, 2.1 and 2.9 wt% La中的0.7, 1.4, 2.1 and 2.9是怎么配置的呀,什么方法呢个确保达到, 1.4, 2.1 and 2.9?
最后, 0.5 wt% for Pt, 1.0 wt% for Sn, and 1.0 wt% for Na, respectively中的0.5,1.0,1.0又是用什么方法得到呢?
回复此楼
云淡风轻,闲庭信步。
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

hutu0920

铜虫 (正式写手)

引用回帖:
2楼: Originally posted by stef0628 at 2013-09-12 11:53:37
目测楼主在做脱氢

催化剂
云淡风轻,闲庭信步。
3楼2013-09-12 16:36:27
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 3 个回答

stef0628

银虫 (小有名气)

目测楼主在做脱氢
2楼2013-09-12 11:53:37
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
信息提示
请填处理意见