| 2 | 1/1 | 返回列表 |
| 查看: 2110 | 回復(fù): 1 | ||
dxyan木蟲 (正式寫手)
|
[求助]
MIL-101的合成及純化
|
|
采用不用HF合成MIL-101(Cr),參考文獻: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小時,70度,但是比表面積也就2400。DMF洗滌后也用甲醇,丙酮各洗過3,4次。但是BET依舊不行,吸附儀活化也達到足夠的時間。合成完后釜壁面有灰色的一層,在各種溶劑洗的過程中離心完后離心管底部有層灰色的,但是大部分是綠色。誰能幫忙分析一下會是什么原因。原料或者釜的原因嗎?加HF酸的方法也試過了,水洗醇洗后,加入氟化銨,然后再水洗,醇洗。但是比表面都2000以下。氟化銨交換2次,BET才達到2200。求各位幫忙分析一下,謝謝! 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, |
鐵蟲 (初入文壇)
| 2 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 085600 材料與化工 298 +13 | 小西笑嘻嘻 2026-03-03 | 13/650 |
|
|---|---|---|---|---|
|
[考研] 085600材料與化工(高分子)290分求調(diào)劑 +3 | wengyujian 2026-03-04 | 3/150 |
|
|
[考研] 347分電子信息專碩求調(diào)劑 +3 | 咕嘟咕嘟1 2026-03-03 | 3/150 |
|
|
[考研] 一志愿鄭州大學(xué),學(xué)碩,物理化學(xué), 333求調(diào)劑 +4 | 李魔女斗篷 2026-03-04 | 4/200 |
|
|
[考研] 材料工程269求調(diào)劑 +7 | 白刺玫 2026-03-02 | 7/350 |
|
|
[考研] 298求調(diào)劑一志愿中海洋 +3 | lour. 2026-03-03 | 3/150 |
|
|
[考研] 298求調(diào)劑 +3 | 人間唯你是清歡 2026-03-03 | 4/200 |
|
|
[考研] 292求調(diào)劑 +3 | sgbl 2026-03-03 | 3/150 |
|
|
[考研] 0805總分292,求調(diào)劑 +12 | 幻想之殤 2026-03-01 | 12/600 |
|
|
[考研] 材料學(xué)碩318求調(diào)劑 +15 | February_Feb 2026-03-01 | 17/850 |
|
|
[考研] 化工335求調(diào)劑 +5 | 摸摸貓貓頭 2026-03-02 | 5/250 |
|
|
[考研] 調(diào)劑材料學(xué)碩 +4 | 詞凝Y 2026-03-02 | 4/200 |
|
|
[考研] 295求調(diào)劑。一志愿報考鄭州大學(xué)化學(xué)工藝學(xué)碩,總分295分 +8 | yl1 2026-03-02 | 9/450 |
|
|
[考研] 0856材料求調(diào)劑 +12 | hyf hyf hyf 2026-02-28 | 13/650 |
|
|
[考研] 085600材料工程一志愿中科大總分312求調(diào)劑 +9 | 吃宵夜1 2026-02-28 | 11/550 |
|
|
[考研] 303求調(diào)劑 +5 | 今夏不夏 2026-03-01 | 5/250 |
|
|
[考研] 求調(diào)劑 +3 | 熬夜的貓頭鷹 2026-03-02 | 3/150 |
|
|
[基金申請]
剛錄用,沒有期刊號,但是在線可看的論文可以放為代表作嗎
10+3
|
arang1 2026-03-01 | 3/150 |
|
|
[考研] 調(diào)劑 +3 | 簡木ChuFront 2026-02-28 | 3/150 |
|
|
[考研]
|
LYidhsjabdj 2026-02-28 | 4/200 |
|