24小时热门版块排行榜    

查看: 116  |  回复: 1
当前主题已经存档。

小童2133

铁虫 (正式写手)


[交流] 求助:准确翻译一段话

The hydrolysis of the alkoxide solution was carried out at 5C, adding drop-
wise a solution of H2O (H2O/Zr(OBu)4 = 4molar ratio), Ni(NO3)2 6H2O, Ce(NO3)6H2O, HNO3(HNO3/Zr(OBu)4=0:2molar ratio) and 100ml of
isopropyl alcohol. The green rigid transparent gels
obtained were aged “in situ” for 24 h and then dried
in air flow at room temperature. The dry gels were
carefully calcined in air at 500C during 2 h with a
100Nml/min flow. In addition a Ni/CeO2 catalyst was
prepared by coprecipitation of a solution of Ni and Ce
nitrates in isopropyl alcohol at constant pH D 9. The
calcined solids were crushed and sieved and the frac-
tion with particle size between 0.16 and 0.40mm was
kept.

» 猜你喜欢

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

monitor2885

至尊木虫 (职业作家)

队长

★ ★ ★ ★ ★ ★
小童2133(金币+6,VIP+0): 6-3 17:49
在5摄氏度下,逐滴加入由H2O(H2O/Zr(OBu)4的摩尔比 = 4),Ni(NO3)2 6H2O,Ce(NO3)6H2O和 HNO3(HNO3/Zr(OBu)4的摩尔比=0:2)构成的混合液,以及100毫升的异丙醇溶液,从而使醇盐溶液发生水解反应。不易形变的绿色透明溶胶通过24小时的原位老化,并在室温通风干燥而获得。干燥后的溶胶要在100Nml/min的载气流通下,经过2小时500摄氏度的煅烧。另外,Ni,Ce在pHD9的异丙醇溶液中协同沉淀后得到Ni/CeO2催化剂。煅烧后的固体经过压碎筛选之后,保留粒径在0.16至0.4毫米的固体颗粒。
Retirement
2楼2009-06-03 16:35:08
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 小童2133 的主题更新
普通表情 高级回复 (可上传附件)
信息提示
请填处理意见