24小时热门版块排行榜    

查看: 2117  |  回复: 1

dxyan

木虫 (正式写手)

[求助] MIL-101的合成及纯化

采用不用HF合成MIL-101(Cr),参考文献:Chem. Mater. 2012, 24, 166。但是做了很久比表面上不去。2200左右。其中DMF洗部分也洗了3次,每次12小时,70度,但是比表面积也就2400。DMF洗涤后也用甲醇,丙酮各洗过3,4次。但是BET依旧不行,吸附仪活化也达到足够的时间。合成完后釜壁面有灰色的一层,在各种溶剂洗的过程中离心完后离心管底部有层灰色的,但是大部分是绿色。谁能帮忙分析一下会是什么原因。原料或者釜的原因吗?加HF酸的方法也试过了,水洗醇洗后,加入氟化铵,然后再水洗,醇洗。但是比表面都2000以下。氟化铵交换2次,BET才达到2200。求各位帮忙分析一下,谢谢!
Cr(NO3)3·9H2O (1.0 g, 2.5 mmol), terephthalic acid (0.42 g, 2.5 mmol), and deionized water (10 mL) were
blended and briefly sonicated resulting in a dark blue-colored suspension. The suspension was placed in a
Teflon-lined autoclave bomb and kept in an oven at 218 °C for 18 h. After the bomb cooled down to room
temperature, the resultant fine green MIL-101 crystals were separated from water using a centrifuge and
washed with water, methanol and acetone. The suspension in acetone was centrifuged and separated, the
solids were placed in N, N-dimethylformamide (10 mL) and the suspension was sonicated for 10 min and
then kept at 70 °C overnight. The resulting solids were separated by centrifugation, repeatedly washed with
methanol and acetone, dried at 75 °C overnight,
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

MephisroWW

铁虫 (初入文坛)

同问,请问楼主解决了嘛
2楼2024-11-13 21:55:13
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 dxyan 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] 调剂的同学,走过路过,不要错过 +8 likeihood 2026-03-06 13/650 2026-03-08 09:35 by likeihood
[考研] 288求调剂 +3 好好- 2026-03-07 3/150 2026-03-08 07:34 by Iveryant
[考研] 324求调剂 +6 wxz2 2026-03-03 9/450 2026-03-08 03:58 by lfhuang
[考研] 085600材料与化工,一志愿广州985,求调剂 +12 qqyyaill 2026-03-05 12/600 2026-03-07 22:41 by Leeding1356
[考研] 0703化学求调剂学校 +3 一志愿京区211 2026-03-04 3/150 2026-03-07 21:35 by yinhuanshun
[考研] 材料调剂 +10 ounce. 2026-03-04 12/600 2026-03-07 09:14 by Mornach1988
[考研] 306求调剂 +7 Bahati 2026-03-05 7/350 2026-03-06 22:11 by 星空星月
[考研] 289求调剂 +3 驰光绝景 2026-03-04 4/200 2026-03-06 12:34 by 驰光绝景
[考研] 080500材料科学与工程 +13 202114020319 2026-03-03 13/650 2026-03-06 00:29 by wutongshun
[考研] 一志愿武理085601专硕347分求调剂 +4 啊欧欧欧 2026-03-04 5/250 2026-03-05 19:27 by Leding1356
[考研] 0856材料与化工,270求调剂 +17 YXCT 2026-03-01 20/1000 2026-03-05 09:22 by 一切OK
[考研] 22408-273求调剂-担任3个项目的负责人-1篇国际期刊论文(一作)1篇核心期刊论文在投。 +3 没想好取什么名 2026-03-03 3/150 2026-03-05 08:38 by Destiny688
[论文投稿] 主编终审卡者不动 100+4 Stray2021 2026-03-03 4/200 2026-03-05 08:04 by bdhaoxiang
[考研] 材料学硕080500复试调剂294 +3 四叶zjz 2026-03-04 3/150 2026-03-05 07:09 by kunm555
[考研] 材料工程269求调剂 +7 白刺玫 2026-03-02 7/350 2026-03-04 08:47 by zhyzzh
[考研] 291求调剂 +4 Afy123456 2026-03-03 7/350 2026-03-03 22:29 by barlinike
[考研] 298求调剂 +3 人间唯你是清欢 2026-03-03 4/200 2026-03-03 18:09 by ms629
[考研] 284求调剂 +6 天下熯 2026-03-02 6/300 2026-03-03 13:46 by Iveryant
[考研] 291求调剂 +3 MuoLuo1312 2026-03-02 6/300 2026-03-03 12:13 by 热情沙漠
[考研] 311求调剂 +6 亭亭亭01 2026-03-01 6/300 2026-03-01 15:41 by 324616
信息提示
请填处理意见