24小时热门版块排行榜    

查看: 1541  |  回复: 1

dabaoxf1

铜虫 (小有名气)

[求助] 催化剂的稳定性实验

催化剂循环使用实验具体怎么操作?
A total of 0.10 mL of aqueous 4-NP solution (0.005
M) was mixed with 1.0 mL of fresh NaBH4 (0.2 M) solution.
Subsequently, 1.0 mL of aqueous dispersion of the Fe3O4@SiO2-
Au@mSiO2 microspheres (0.3 wt %) was added, and solution was
quickly subjected to UV-vis measurements;
To study the reusability of the magnetic catalysts, the used
magnetic microspheres were separated from the solution with a
magnet after the monitoring whole reduction process was com-
pleted. The recycled magnetic microspheres were washed with
ethanol 6 times and with deionized water 3 times. Similar to the
above reduction process, the obtained magnetic microspheres were
redispersed with 1.0 mL of deionized water and mixed with 0.1
mL of aqueous 4-NP solution (0.005 M) and 1.0 mL of fresh NaBH4
(0.2 M) solution. After reaction for 20 min, the solution was
measured using UV-vis spectroscopy.
文献中一般都是这么做的,但是催化剂的量特别少,溶液的量相对较多,用磁铁分离难,这么少的量还要醇洗、水洗几次,催化剂损失严重,且易团聚失活。
请问大家具体怎么操作?催化剂的量大概控制在多少?水洗时加水量?水洗后重新分散要超声吗?超声多久?谢谢大家!
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:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

帝释天i彡

新虫 (小有名气)

2楼2025-01-06 02:56:15
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 dabaoxf1 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 285化工学硕求调剂(081700) +9 柴郡猫_ 2026-03-12 9/450 2026-03-17 10:18 by Sammy2
[考研] 材料与化工304求B区调剂 +7 邱gl 2026-03-11 8/400 2026-03-17 09:36 by 努力学习赚彩礼
[考研] 考研调剂 +3 淇ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
[考研] 0854控制工程 359求调剂 可跨专业 +3 626776879 2026-03-14 9/450 2026-03-16 17:42 by 626776879
[考研] 环境工程调剂 +6 大可digkids 2026-03-16 6/300 2026-03-16 17:16 by barlinike
[考研] 070303一志愿西北大学学硕310找调剂 +5 d如愿上岸 2026-03-12 8/400 2026-03-16 15:19 by peike
[考研] 070303 总分349求调剂 +3 LJY9966 2026-03-15 5/250 2026-03-16 14:24 by xwxstudy
[考研] 材料工程327求调剂 +3 xiaohe12w 2026-03-11 3/150 2026-03-14 20:20 by ms629
[考研] 复试调剂 +4 z1z2z3879 2026-03-14 5/250 2026-03-14 16:30 by JourneyLucky
[考研] 【0703化学调剂】-一志愿华中师范大学-六级475 +5 Becho359 2026-03-11 5/250 2026-03-14 11:35 by 哦哦123
[考研] 331求调剂(0703有机化学 +5 ZY-05 2026-03-13 6/300 2026-03-14 10:51 by Jy?
[考研] 308 085701 四六级已过求调剂 +7 温乔乔乔乔 2026-03-12 14/700 2026-03-14 10:49 by JourneyLucky
[考研] 材料371求调剂 +9 鳄鱼? 2026-03-11 11/550 2026-03-13 22:53 by JourneyLucky
[考研] 材料与化工085600调剂求老师收留 +9 jiaanl 2026-03-11 9/450 2026-03-13 20:22 by JourneyLucky
[考研] 求调剂 +5 一定有学上- 2026-03-12 5/250 2026-03-13 18:31 by ms629
[考研] 26考研求调剂 +5 丶宏Sir 2026-03-13 5/250 2026-03-13 13:05 by JourneyLucky
[考研] 296求调剂 +3 大口吃饭 身体健 2026-03-13 3/150 2026-03-13 10:31 by 学员8dgXkO
[考研] 270求调剂 085600材料与化工专硕 +3 YXCT 2026-03-11 3/150 2026-03-13 10:13 by houyaoxu
[考研] 283求调剂,材料、化工皆可 +8 苏打水7777 2026-03-11 10/500 2026-03-13 09:06 by Linda Hu
[考研] 279求调剂 +3 莫xiao 2026-03-10 4/200 2026-03-11 08:06 by 斩魂滴兔子!
信息提示
请填处理意见