 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 2 | 1/1 | 返回列表 |
| 查看: 876 | 回復: 1 | ||
| 本帖產(chǎn)生 1 個 翻譯EPI ，點擊這里進行查看 | ||
lanlan1987金蟲 (正式寫手)
|
[求助]
英文翻譯，關于催化方面
|
|
|
摘要：本文采用醇鹽-凝膠溶膠法制備Al2O3-ZrO2復合載體，并通過超聲浸漬法制備Cs2O/ Al2O3-ZrO2催化劑。采用X射線衍射(XRD)、掃描電子顯微鏡(SEM)、能譜（EDS）等技術考察了復合載體對催化劑的晶相結構、表面形貌的影響；并以甲醛和醋酸甲酯合成丙烯酸甲酯反應為探針，討論了單一載體及鋁鋯比不同的復合載體催化劑的催化活性。實驗結果表明：經(jīng)過500℃煅燒的催化劑具有良好的晶形；材料具有蜂窩狀孔道，具有良好的通透性；Cs的負載量為4.42%；當mAl2O¬3：mZrO2=1:0.25時所得催化劑的活性最高，收率達到14.76%。 關鍵詞：醇鹽-凝膠溶膠法； Al2O3-ZrO2復合載體；羥酸縮合 |
回復此樓» 猜你喜歡
一志愿河北工業(yè)大學0817化工278分求調(diào)劑
已經(jīng)有3人回復
-
化學308分求調(diào)劑
已經(jīng)有3人回復
-
085600材料與化工調(diào)劑
已經(jīng)有11人回復
-
335分 | 材料與化工專碩 | GPA 4.07 | 有科研經(jīng)歷
已經(jīng)有3人回復
-
一志愿武理材料工程348求調(diào)劑
已經(jīng)有9人回復
-
279分求調(diào)劑 一志愿211
已經(jīng)有18人回復
-
0703化學求調(diào)劑
已經(jīng)有5人回復
-
材料292調(diào)劑
已經(jīng)有3人回復
-
一志愿陜師大生物學071000，298分，求調(diào)劑
已經(jīng)有3人回復
-
306求0703調(diào)劑一志愿華中師范
已經(jīng)有7人回復
xiaohanhan2007 
捐助貴賓 (小有名氣)
- 翻譯EPI: 38
- 應助: 0 (幼兒園)
- 金幣: 1171.6
- 散金: 1071
- 紅花: 1
- 帖子: 218
- 在線: 607小時
- 蟲號: 477343
- 注冊: 2007-12-13
- 專業(yè): 配位化學
【答案】應助回帖
★
sltmac(金幣+1): 2011-11-28 17:15:01
lanlan1987(金幣+50, 翻譯EPI+1): 辛苦了 2011-11-28 18:17:23
sltmac(金幣+1): 2011-11-28 17:15:01
lanlan1987(金幣+50, 翻譯EPI+1): 辛苦了 2011-11-28 18:17:23
|
Abstract: Al2O3-ZrO2 composite carriers have been prepared by the alkoxide sol-gel method, and Cs2O / Al2O3-ZrO2 catalysts have been prepared utilizing ultrasonic impregnation. Besides, the effects of the carriers on the crystal phase structures and the morphologies of the catalysts have been investigated employing X-ray diffractions (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Moreover, the catalytic activity of the catalysts with single and composite carriers of various Al/Zr ratios was thoroughly discussed by means of the reaction of formaldehyde and methyl acetate affording methacrylate. The results show that the catalysts were of favorable crystal shapes after the calcinations at 500 ℃. Meanwhile, the cellular pores of the materials could lead to satisfactory permeability. Furthermore, the loading of Cs was 4.42%, and the catalyst activity reached maximum with the yield of 14.76% when the molar ratio of Al2O3 and ZrO2 was 1:0.25. Keywords: alkoxide sol-gel method, Al2O3-ZrO2 composite carrier, aldol condensation |
2樓2011-11-28 16:16:54
相關版塊跳轉
我要訂閱樓主 lanlan1987 的主題更新
| 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] 335分 | 材料與化工專碩 | GPA 4.07 | 有科研經(jīng)歷 +3 | cccchenso 2026-03-23 | 3/150 |
|
|---|---|---|---|---|
|
|
[考研] 291求調(diào)劑 +5 | hhhhxn.. 2026-03-23 | 5/250 |
|
|
|
[考研] 306求調(diào)劑 +9 | chuanzhu川燭 2026-03-18 | 9/450 |
|
|
[考研] 求調(diào)劑 +6 | 十三加油 2026-03-21 | 6/300 |
|
|
|
[考研] 環(huán)境學碩288求調(diào)劑 +6 | 皮皮皮123456 2026-03-22 | 6/300 |
|
|
|
[考研] 305分求調(diào)劑（食品工程） +4 | Sxy112 2026-03-21 | 6/300 |
|
|
|
[考研] 求調(diào)劑院校信息 +6 | CX 330 2026-03-21 | 6/300 |
|
|
|
[考研] 廣西大學材料導師推薦 +3 | 夏夏夏小正 2026-03-17 | 5/250 |
|
|
|
[考研] 0703化學調(diào)劑 +4 | 妮妮ninicgb 2026-03-21 | 4/200 |
|
|
|
[考研] 22 350 本科985求調(diào)劑，求老登收留 +3 | 李軼男003 2026-03-20 | 3/150 |
|
|
|
[考研] 330求調(diào)劑0854 +3 | assdll 2026-03-21 | 3/150 |
|
|
|
[考研] 332求調(diào)劑 +3 | 鳳凰院丁真 2026-03-20 | 3/150 |
|
|
|
[考研] 材料學學碩080502 337求調(diào)劑-一志愿華中科技大學 +4 | 順順順mr 2026-03-18 | 5/250 |
|
|
|
[考研] 材料 336 求調(diào)劑 +3 | An@. 2026-03-18 | 4/200 |
|
|
|
[考研] 308求調(diào)劑 +3 | 阿姐阿姐家啊 2026-03-18 | 3/150 |
|
|
|
[考研] 求調(diào)劑，一志愿:南京航空航天大學大學 ，080500材料科學與工程學碩，總分289分 +4 | @taotao 2026-03-19 | 4/200 |
|
|
|
[考研]
 295復試調(diào)劑
+8
|
簡木ChuFront 2026-03-19 | 8/400 |
|
|
|
[考研] 086500 325 求調(diào)劑 +3 | 領帶小熊 2026-03-19 | 3/150 |
|
|
|
[碩博家園] 湖北工業(yè)大學 生命科學與健康學院-課題組招收2026級食品/生物方向碩士 +3 | 1喜春8 2026-03-17 | 5/250 |
|
|
|
[考研] [導師推薦]西南科技大學國防/材料導師推薦 +3 | 尖角小荷 2026-03-16 | 6/300 |
|