24小时热门版块排行榜

返回列表

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

iron5898

银虫 (小有名气)

应助: 0 (幼儿园)
金币: 135.8
帖子: 68
在线: 7小时
虫号: 667830
注册: 2008-12-04
性别: GG
专业: 金属有机化学

[求助] 求助！负载催化剂的制备方法或文献

大家有谁知道如何将氧化镧及二氧化锰负载到活性氧化铝载体上？本人合成小硕，以前没接触过负载催化剂，望大家帮帮忙。有相关文献给也行！千恩万谢！

回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐，对您同样有帮助:

1楼 2012-12-03 15:14:29

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

zyhou

专家顾问 (文坛精英)

专家经验: +3748
C-EPI: 74
应助: 4970 (副教授)
贵宾: 2.947
金币: 39156.7
散金: 14624
红花: 415
帖子: 10637
在线: 2545.8小时
虫号: 373328
注册: 2007-05-16
性别: GG
专业: 催化化学
管辖: 催化

【答案】应助回帖

★ ★ ★ ★
感谢参与，应助指数 +1
pzypdl: 金币+4, 谢谢回帖交流！ 2012-12-03 23:21:44

我们做过把氧化镧浸渍到二氧化硅上，具体的步骤是：
A series of La2O3-modified SiO2 denoted as xLa2O3-SiO2 (x = 5, 10, 15, 30), where x means the amount of La2O3 (wt%) added in SiO2, were prepared by impregnation of a commercial spherical SiO2 into an aqueous solution of lanthanum nitrate. The precursor supports were dried at 110 °C overnight, and calcined at 700 °C for 4 h.
参考文献：Catalysis Today, Volume 131, Issues 1–4, 29 February 2008, Pages 278-284

也做过把微量的镧通过离子交换法负载到Y型分子筛上，具体步骤：
A powder zeolite NH4Y (Si/Al = 6, BET surface area 420 m2/g) was firstly ion-exchanged in each of an acidic aqueous solution of La3+, Ce3+, Pr2+, Nd3+, Sm3+ and Eu3+ at 90 °C under reflux for 4 h, then the solid was filtered, washed, dried and finally calcined at 500 °C for 5 h. This process was repeated 3–5 times in order to obtain an equal amount of rare earth metal in the modified zeolite.
参考文献：Fuel, Volume 86, Issues 17–18, December 2007, Pages 2707-2713

赞一下(3人)

回复此楼

6楼2012-12-03 20:24:39

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

相关版块跳转我要订阅楼主 iron5898 的主题更新

返回列表