 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 2 | 1/1 | 返回列表 |
| 查看: 337 | 回復(fù): 1 | |||
jinkai838木蟲 (著名寫手)
|
[交流]
【資源】95年JC中關(guān)于球磨制備Nanophase Fluorite-Structured CeO2–ZrO2 Catalysts的 已有1人參與
|
|
The utilization of mechanical milling for the preparation of catalysts based on ceria structurally modified with zirconia is presented. It is shown that room-temperature high-energy ball milling is an effective tool for the synthesis of nanophase CeO2–ZrO2 solid solution in a wide composition range. The use of combined X-ray diffraction analysis, Raman spectroscopy, and electron microscopy indicate that the milling process induces the formation of true solid solutions with a contraction of the cell parameter for cubic ceria following the introduction of Zr into the lattice. This, in turn, remarkably enhances the oxygen storage/transport and redox capacity compared to pure ceria and zirconia or to a simple mixture thereof. An unusual resistance to high-temperature cycling was also evidenced. These features were analyzed by the study of the reduction profile of doped ceria carried out by temperature-programmed reduction at different milling times. The oxygen storage capacity (OSC) of the catalysts was also evaluated; both the total and the kinetic accessible OSC indicated that the best composition is CexZr1¡xO2 with x>0.5. This was correlated to the structural features and to the presence of a high concentration of ions with redox character (i.e., Ce4C ions) which favor oxygen mobility. http://d.namipan.com/d/a88524bc3eab98b58ad79f504b239a4f7679b016b5e61200 [ Last edited by ^_^@^_^ on 2010-5-9 at 17:04 ] |
回復(fù)此樓» 猜你喜歡
2026湖北師范大學(xué)化學(xué)化工學(xué)院招收碩士研究生調(diào)劑
已經(jīng)有0人回復(fù)
-
2026湖北師范大學(xué)化學(xué)化工學(xué)院招收研究生調(diào)劑
已經(jīng)有0人回復(fù)
-
化學(xué)工程及工業(yè)化學(xué)論文潤(rùn)色/翻譯怎么收費(fèi)?
已經(jīng)有134人回復(fù)
-
26年材料/化學(xué)相關(guān)專業(yè)博士研究生招生 溫州大學(xué)化學(xué)與材料工程學(xué)院(26年秋季入學(xué))
已經(jīng)有0人回復(fù)
-
0703調(diào)劑
已經(jīng)有2人回復(fù)
-
085602化學(xué)工程求調(diào)劑。
已經(jīng)有4人回復(fù)
-
2026年博士研究生招生
已經(jīng)有1人回復(fù)
-
304求調(diào)劑
已經(jīng)有3人回復(fù)
-
國家工程物理交叉科學(xué)研究中心招收凝聚態(tài)物理及相關(guān)專業(yè)碩士研究生一名
已經(jīng)有8人回復(fù)
gmwanghui
木蟲 (小有名氣)
- 應(yīng)助: 0 (幼兒園)
- 金幣: 2246.6
- 帖子: 178
- 在線: 186小時(shí)
- 蟲號(hào): 663059
- 注冊(cè): 2008-11-26
- 專業(yè): 電化學(xué)
2樓2010-05-09 14:22:18
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 jinkai838 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] 085701環(huán)境工程求調(diào)劑 +6 | 多久上課 2026-03-27 | 6/300 |
|
|---|---|---|---|---|
|
[考研] 322求調(diào)劑 +3 | 宋明欣 2026-03-27 | 3/150 |
|
|
|
[考研] 289求調(diào)劑 +7 | 新時(shí)代材料 2026-03-27 | 7/350 |
|
|
|
[考研] 【求調(diào)劑】085601材料工程專碩 | 總分272 | +4 | 腳滑的守法公民 2026-03-27 | 4/200 |
|
|
|
[考研] 求調(diào)劑推薦 材料 304 +14 | 荷包蛋hyj 2026-03-26 | 14/700 |
|
|
|
[考研] 287求調(diào)劑 +10 | land xuxu 2026-03-26 | 10/500 |
|
|
|
[材料工程] 一志愿C9材料與化工專業(yè)總分300求調(diào)劑 +7 | 曼111 2026-03-24 | 8/400 |
|
|
|
[碩博家園] 招收生物學(xué)/細(xì)胞生物學(xué)調(diào)劑 +3 | IceGuo 2026-03-26 | 4/200 |
|
|
|
[考研] 349求調(diào)劑 +4 | 李木子啊哈哈 2026-03-25 | 4/200 |
|
|
|
[考研] 一志愿華理，數(shù)一英一285求A區(qū)調(diào)劑 +8 | AZMK 2026-03-25 | 10/500 |
|
|
|
[考研] 求調(diào)劑 +8 | Auroracx 2026-03-22 | 8/400 |
|
|
|
[考研] 289求調(diào)劑 +17 | 碩星赴 2026-03-23 | 17/850 |
|
|
|
[考研] 086000生物與醫(yī)藥292求調(diào)劑 +6 | 小小陳小小 2026-03-22 | 9/450 |
|
|
|
[考研] 297求調(diào)劑 +6 | 田洪有 2026-03-26 | 6/300 |
|
|
|
[考研] 環(huán)境專碩324分求調(diào)劑推薦 +5 | 軒小寧—— 2026-03-26 | 5/250 |
|
|
|
[考研] 網(wǎng)絡(luò)空間安全0839招調(diào)劑 +4 | w320357296 2026-03-25 | 6/300 |
|
|
|
[考研] 296求調(diào)劑 +4 | 汪�。�！ 2026-03-25 | 7/350 |
|
|
|
[考研] 302求調(diào)劑 +4 | 錦衣衛(wèi)藤椒 2026-03-25 | 4/200 |
|
|
|
[考研] 306求0703調(diào)劑一志愿華中師范 +10 | 紙魚ly 2026-03-21 | 11/550 |
|
|
|
[考研] 材料專碩331求調(diào)劑 +4 | 鮮當(dāng)牛 2026-03-24 | 4/200 |
|