24小时热门版块排行榜    

查看: 618  |  回复: 2

tt陶80

新虫 (初入文坛)

[求助] 重复浸渍法中干燥煅烧一次还是多次? 已有1人参与

The procedures for each impregnation were as follows. First, the precursor solution was prepared by dissolving a desired amount of Ni(NO3)2•6H2O or Co(NO3)2•6H2O in deionized water just sufficient to fill the pores of 3.0 g of SiO2 support. The precursor solution then was added to the support dropwise and treated with ultrasound for 1 h to facilitate metal dispersion. After aging in air at ambient temperature overnight, the catalyst was dried in air at 80 °C for 10 h and calcined at 450 °C for 3 h. The catalyst obtained after four times of impregnation was stored in vials and reduced under H2 flow with a flow rate of 60 mL/min at 450 °C for 3 h prior to catalytic evaluation.
文献里面重复浸渍四次,过程中的干燥和煅烧是重复四次,还是浸渍四次后干燥、煅烧一次。
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

一如,,既往

新虫 (初入文坛)

你好,我也遇到同样的问题,想问你最后是怎么做的

发自小木虫Android客户端
2楼2018-10-31 13:02:53
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

wangshihua

金虫 (正式写手)

小硕硕

【答案】应助回帖

虽然文献啥意思不知道,但是在做催化剂的过程中,如果采用多次浸渍的方法,不建议多次焙烧,多次被烧容易引起金属组分团聚,致使其分散不均。
抉择决定命运
3楼2018-11-02 14:50:16
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 tt陶80 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 271材料工程求调剂 +5 .6lL 2026-03-18 5/250 2026-03-19 03:07 by 无懈可击111
[考研] 294求调剂材料与化工专硕 +5 陌の森林 2026-03-18 5/250 2026-03-18 22:18 by bingxueer79
[考研] 一志愿吉林大学材料学硕321求调剂 +4 Ymlll 2026-03-18 6/300 2026-03-18 22:15 by li123456789.
[考研] 266求调剂 +5 阳阳哇塞 2026-03-14 9/450 2026-03-18 15:05 by stone_128
[考研] 297求调剂 +8 戏精丹丹丹 2026-03-17 8/400 2026-03-18 14:30 by laoshidan
[考博] 环境领域全国重点实验室招收博士1-2名 +3 QGZDSYS 2026-03-13 5/250 2026-03-18 11:13 by QGZDSYS
[考研] 307求调剂 +3 冷笙123 2026-03-17 3/150 2026-03-18 09:55 by macy2011
[考研] 材料与化工求调剂 +6 为学666 2026-03-16 6/300 2026-03-17 20:15 by peike
[考研] 材料专硕326求调剂 +6 墨煜姒莘 2026-03-15 7/350 2026-03-17 17:10 by ruiyingmiao
[考研] 275求调剂 +4 太阳花天天开心 2026-03-16 4/200 2026-03-17 10:53 by 功夫疯狂
[考研] 考研调剂 +3 淇ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
[考研] 278求调剂 +3 Yy7400 2026-03-13 3/150 2026-03-17 08:24 by laoshidan
[考研] 一志愿,福州大学材料专硕339分求调剂 +3 木子momo青争 2026-03-15 3/150 2026-03-17 07:52 by laoshidan
[考研] [导师推荐]西南科技大学国防/材料导师推荐 +3 尖角小荷 2026-03-16 6/300 2026-03-16 23:21 by 尖角小荷
[基金申请] 国自科面上基金字体 +6 iwuli 2026-03-12 7/350 2026-03-16 21:18 by sculhf
[考研] 070300化学学硕求调剂 +6 太想进步了0608 2026-03-16 6/300 2026-03-16 16:13 by kykm678
[考研] 285求调剂 +6 ytter 2026-03-12 6/300 2026-03-16 15:05 by njzyff
[考研] 288求调剂 +4 奇点0314 2026-03-14 4/200 2026-03-14 23:04 by JourneyLucky
[考研] 329求调剂 +3 miaodesi 2026-03-12 4/200 2026-03-13 20:53 by 18595523086
[考研] 一志愿211化学学硕310分求调剂 +8 努力奋斗112 2026-03-12 9/450 2026-03-13 15:41 by JourneyLucky
信息提示
请填处理意见