| 24小時(shí)熱門(mén)版塊排行榜 |
| 5 | 1/1 | 返回列表 |
| 查看: 1332 | 回復(fù): 6 | ||||
| 當(dāng)前只顯示滿足指定條件的回帖,點(diǎn)擊這里查看本話題的所有回帖 | ||||
[求助]
葡萄糖水熱制備疏水催化劑? 已有1人參與
|
||||
|
一篇文章報(bào)道的將Ni/TiO2催化劑變成疏水性的過(guò)程如下: Carbon-coated Ni/TiO2 catalysts were prepared via hydrothermal approach. Glucose and sodium chloride were dissolved in 10 mL of distilled water in the Teflon-lined stainless steel autoclave. Then, the reactor was charged with a certain amount of the unreduced catalyst Ni/TiO2. The reactor was then sealed and put into an oil bath and heated to 180C for 24 h under stirring. The products were filtered off and washed several times, first with water and then ethanol and finally dried in air for 5 h. 對(duì)催化劑制備不熟,想請(qǐng)教各位葡萄糖在180度下發(fā)生了什么反應(yīng),是脫水還是生產(chǎn)了碳?NaCl在這個(gè)過(guò)程中起什么作用? 如果生成的是碳的話,催化劑會(huì)疏水嗎? |
榮譽(yù)版主 (文壇精英)
山濤
![]() |
專家經(jīng)驗(yàn): +925 |
| 葡萄糖本身具有還原性,高溫下對(duì)未還原的Ni/TiO2有一定還原作用,使得葡萄糖對(duì)應(yīng)的產(chǎn)物負(fù)載到Ni/TiO2表面上。葡萄糖被氧化后,含氧量增多,其親水能力應(yīng)該會(huì)更強(qiáng)一些,比如羥基轉(zhuǎn)變?yōu)轸然。葡萄糖的作用是還原,且可能帶有一定雜化功能。NaCl的作用不是太清楚,可能是起到活化性。(一己之言,僅供參考) |

榮譽(yù)版主 (文壇精英)
山濤
![]() |
專家經(jīng)驗(yàn): +925 |

| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 335求調(diào)劑 +3 | yuyu宇 2026-03-23 | 4/200 |
|
|---|---|---|---|---|
|
[考研] 336化工調(diào)劑 +4 | 王大坦1 2026-03-23 | 5/250 |
|
|
[考研] 一志愿上海交大生物與醫(yī)藥專碩324分,求調(diào)劑 +5 | jiajunX 2026-03-22 | 5/250 |
|
|
[考研] 328求調(diào)劑 +4 | LHHL66 2026-03-23 | 4/200 |
|
|
[考研] 招08考數(shù)學(xué) +6 | laoshidan 2026-03-20 | 14/700 |
|
|
[考研] 306求調(diào)劑 +9 | chuanzhu川燭 2026-03-18 | 9/450 |
|
|
[考研] 324求調(diào)劑 +6 | lucky呀呀呀鴨 2026-03-20 | 6/300 |
|
|
[考研] 305分求調(diào)劑(食品工程) +4 | Sxy112 2026-03-21 | 6/300 |
|
|
[考博] 招收博士1-2人 +3 | QGZDSYS 2026-03-18 | 4/200 |
|
|
[考研] 085600材料與化工306 +4 | z1z2z3879 2026-03-21 | 4/200 |
|
|
[考研] 材料與化工(0856)304求B區(qū)調(diào)劑 +3 | 邱gl 2026-03-20 | 7/350 |
|
|
[考研] 279求調(diào)劑 +5 | 紅衣隱官 2026-03-21 | 5/250 |
|
|
[考研] 332求調(diào)劑 +3 | 鳳凰院丁真 2026-03-20 | 3/150 |
|
|
[考研] 材料學(xué)學(xué)碩080502 337求調(diào)劑-一志愿華中科技大學(xué) +4 | 順順順mr 2026-03-18 | 5/250 |
|
|
[考研] 085601調(diào)劑 358分 +3 | zzzzggh 2026-03-20 | 4/200 |
|
|
[考研]
|
簡(jiǎn)木ChuFront 2026-03-19 | 8/400 |
|
|
[考研] 材料學(xué)碩318求調(diào)劑 +5 | February_Feb 2026-03-19 | 5/250 |
|
|
[考研] 一志愿中國(guó)海洋大學(xué),生物學(xué),301分,求調(diào)劑 +5 | 1孫悟空 2026-03-17 | 6/300 |
|
|
[考研] 085600材料與化工求調(diào)劑 +6 | 緒幸與子 2026-03-17 | 6/300 |
|
|
[考研] 有沒(méi)有道鐵/土木的想調(diào)劑南林,給自己招師弟中~ +3 | TqlXswl 2026-03-16 | 7/350 |
|