24小时热门版块排行榜    

Znn3bq.jpeg
查看: 380  |  回复: 10
当前主题已经存档。
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

dervish

金虫 (正式写手)

[交流] 【催化进展】Snapshots of Working Catalysts

Snapshots of Working Catalysts

Vanadium phosphates (VPOs) are used industrially to catalyze the partial oxidation of n-butane to maleic anhydride, which is then used as a starting material for products such as resins and lubricants. However, the reaction proceeds at elevated temperatures (in excess of 400°C), and VPO phases stable under those conditions will transform to other phases at ambient conditions, so an understanding of this catalyst demands that it be studied near its working conditions. Conte et al. (p. 1270) have used powder x-ray diffraction, as well as laser Raman spectroscopy and electron paramagnetic resonance spectroscopy, to determine the transformation of VPO phases as a function of temperature and with various reactants and products present over the catalyst. They conclude that the presence of the reactants rapidly converts -VOPO4 to -VOPO4, but that the initial formation of the phase may create the V5 sites associated with increased catalytic activity.

相关文章下载:
http://www.box.net/public/3h5dlh7o7t

[ Last edited by berlin on 2006-11-13 at 17:27 ]
回复此楼
一个论坛的好坏不在于论坛有多少会员有多大的服务器,在于论坛的人是否开心,是否互相帮助,互相关心。一个好的论坛就是一个开心的网上大家庭。
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

mesoporous

金虫 (小有名气)

10楼2006-09-05 15:31:46
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 11 个回答

rabbit7708

荣誉版主 (职业作家)

心虫

0.5

支持一下,好久没来看贴子了。
呵呵。下载下来好好看看!
化学学科——催化专版欢迎您!:) http://emuch.net/bbs/forumdisplay.php?fid=190 常来看看哟!:)
2楼2006-09-01 12:23:41
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 272分材料子求调剂 +28 Loy0361 2026-04-10 36/1800 2026-04-11 00:45 by success5733
[考研] 一志愿西北工业大学289 085602 +31 yang婷 2026-04-10 31/1550 2026-04-11 00:19 by gong120082
[材料工程] 材料调剂推荐 +8 蛋糕x2 2026-04-07 8/400 2026-04-10 23:13 by Ftglcn90
[考研] 考研调剂 +26 硕星赴 2026-04-09 27/1350 2026-04-10 22:24 by 猪会飞
[考研] 生物学调剂 可调剂到生物与医药 +7 李政莹 2026-04-06 8/400 2026-04-10 21:15 by zhouxiaoyu
[考研] 263能源动力专硕求调剂 +4 加大号饭盒袋 2026-04-10 4/200 2026-04-10 20:52 by gong120082
[考研] 机械还有还有名额吗?太难了 +6 笑笑袁 2026-04-10 6/300 2026-04-10 11:54 by 高维春
[考研] 一志愿华工085600 331分 +6 天下ww 2026-04-09 6/300 2026-04-09 18:59 by l_paradox
[考研] 332,085601求调剂 +12 ydfyh 2026-04-09 14/700 2026-04-09 17:28 by wp06
[考研] 一志愿厦大生物学332求调剂 +10 池池池池池池 2026-04-08 10/500 2026-04-09 17:10 by 独醉梦孤城
[考研] 288求调剂 +15 没有答案_ 2026-04-05 15/750 2026-04-09 10:22 by 5268321
[考研] 求调剂 一志愿西南交通大学085701环境工程 282分 +15 多多爱吃汉堡 2026-04-04 16/800 2026-04-08 11:39 by i_cooler
[考研] 304求调剂 +10 素年祭语 2026-04-06 17/850 2026-04-08 09:05 by 蓝云思雨
[考研] 材料工程专业日语生求调剂 +9 111623 2026-04-07 9/450 2026-04-07 23:31 by 一只好果子?
[考研] 专硕085403,291分,有两篇专利,一国一奖 +3 哈吉咪哈吉咪 2026-04-07 3/150 2026-04-07 18:21 by 蓝云思雨
[考研] 372分材料与化工(085600)英二数二求调剂 +4 蓝笺片 2026-04-06 4/200 2026-04-07 12:30 by dongzh2009
[考研] 材料调剂 +5 小刘同学吖吖 2026-04-06 5/250 2026-04-06 18:34 by sherry_1901
[考研] 可跨专业调剂 +3 周的得地 2026-04-04 6/300 2026-04-04 22:21 by barlinike
[考研] 一志愿南农090401,268,求调剂 +5 一木鸟然 2026-04-04 5/250 2026-04-04 17:07 by babysonlkd
[考研] 复试调剂 +6 范根培 2026-04-04 6/300 2026-04-04 14:27 by 土木硕士招生
信息提示
请填处理意见