24小时热门版块排行榜    

查看: 3144  |  回复: 5
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

leiws

至尊木虫 (职业作家)

木虫浪子

[交流] 从沸石结构扩张,拓扑转换所想到的... Nature 全文赏析 已有4人参与

近来,Nature 刊文RHO沸石家族接连增添了两个新的成员PST-20,PST-25, 即材料的空间维度扩展来构造新结构的材料~~
Title:
A zeolite family with expanding structural complexity and embedded isoreticular structures
Authors:
Peng Guo,Jiho Shin,        Alex G. Greenaway, Jung Gi Min, Jie Su, Hyun June Choi, Leifeng Liu,         Paul A. Cox, Suk Bong Hong, Paul A. Wright & Xiaodong Zou
Abstract:
The prediction and synthesis of new crystal structures enable the targeted preparation of materials with desired properties. Among porous solids, this has been achieved for metal–organic frameworks1, 2, 3, but not for the more widely applicable zeolites4, 5, where new materials are usually discovered using exploratory synthesis. Although millions of hypothetical zeolite structures have been proposed6, 7, not enough is known about their synthesis mechanism to allow any given structure to be prepared. Here we present an approach that combines structure solution with structure prediction, and inspires the targeted synthesis of new super-complex zeolites. We used electron diffraction to identify a family of related structures and to discover the structural ‘coding’ within them. This allowed us to determine the complex, and previously unknown, structure of zeolite ZSM-25 (ref. 8), which has the largest unit-cell volume of all known zeolites (91,554 cubic ångströms) and demonstrates selective CO2 adsorption. By extending our method, we were able to predict other members of a family of increasingly complex, but structurally related, zeolites and to synthesize two more-complex zeolites in the family, PST-20 and PST-25, with much larger cell volumes (166,988 and 275,178 cubic ångströms, respectively) and similar selective adsorption properties. Members of this family have the same symmetry, but an expanding unit cell, and are related by hitherto unrecognized structural principles; we call these family members embedded isoreticular zeolite structures.
Download link:
http://www.nature.com/nature/jou ... ll/nature14575.html
Structure Evolution:
从沸石结构扩张,拓扑转换所想到的... Nature 全文赏析-------------------------------------------------------------------------------------------------------------------------------------------
a) 从沸石的构造方式来讲,常见的沸石一般是有基本构筑基元来构筑比如说d4r,d6r,sod, lta 等等..或是近几年比较火的沸石本身的就是二维材料,通过重新引入有机材料还有填充分子进行固化形成空间维度不一的材料比如IPC-1~4,UTL, MWW,FER或是有机无机杂化材料等等...对比这篇文章中的实例似乎有提供了一种从三维空间维度来构造多孔材料的一种新的方法...
b) 另外上述文章中得到的材料的孔的开度为8MR,所以此材料用在CO2 分离或是MTO可能有着不错的效果;
欢迎大家拍砖~~~
回复此楼

» 本帖附件资源列表

» 收录本帖的淘帖专辑推荐

催化&材料

» 本帖已获得的红花(最新10朵)

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

人的烦恼就是记性太好,如果可以把所有事都忘掉,以后每一日都是个新开始,你说多好。
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

道逍遥游

金虫 (小有名气)

不错的文章,谢谢分享!
5楼2015-08-20 18:23:35
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 6 个回答

guopeng8372

木虫 (著名写手)

送红花一朵
哈哈

[ 发自手机版 http://muchong.com/3g ]
单晶单晶快出来
2楼2015-08-07 14:32:52
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

leiws

至尊木虫 (职业作家)

木虫浪子

引用回帖:
2楼: Originally posted by guopeng8372 at 2015-08-07 14:32:52
哈哈

作者?有时间谈谈背后的故事
人的烦恼就是记性太好,如果可以把所有事都忘掉,以后每一日都是个新开始,你说多好。
3楼2015-08-07 19:44:46
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
谢谢分享!!!!!!!!

[ 发自小木虫客户端 ]
4楼2015-08-20 13:49:45
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 龙 兔 虎 猫 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
[职场人生] 40+中年人失业后,还能找到好工作吗? +11 xqy2009 2026-10-13 13/650 2026-10-15 21:32 by bear2007
[有机交流] 用NBS溴化时溶剂除了CCl4外还有什么 +3 18834002860 2026-10-12 6/300 2026-10-15 14:30 by 长沙摩尔信息科�
[基金申请] 申请科研项目纯靠实力能成功吗? 200+7 David1982 2026-10-13 11/550 2026-10-15 10:30 by zyqchem
[硕博家园] 极限拉扯,如何抉择 +11 Isak0320 2026-10-12 15/750 2026-10-14 21:55 by 猫鱼不是鱼
[论文投稿] 二审4个多月了还是Awaiting Reviewer Scores 10+3 纳斯达克ML 2026-10-11 4/200 2026-10-14 17:30 by babero
[有机交流] OpenAI又攻克数学难题了,离AI做有机合成还有多远? +8 wangyl_123 2026-10-10 13/650 2026-10-14 15:12 by zuesli
[教师之家] 课题组会帮你通过考核么? +4 好运来~9527 2026-10-10 7/350 2026-10-13 08:41 by xli1984
[公派出国] 售一区SCI文章T0P,我:8O.551.O54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 9/450 2026-10-11 22:34 by XQNyDCa1Tk5n
[找工作] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 22:26 by XQNyDCa1Tk5n
[公派出国] 售SCI一区文章,我:8O5.5.1.O5.4,科目全,可伽急 +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 22:26 by XQNyDCa1Tk5n
[考博] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +3 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 22:11 by XQNyDCa1Tk5n
[教师之家] 售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急 (EPI+-1)(金币-50) +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 22:06 by XQNyDCa1Tk5n
[教师之家] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 (EPI+-1)(金币-50) +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 14:25 by VOMexwnDzOFZ
[教师之家] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 (EPI+-1)(金币-50) +4 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 14:05 by VOMexwnDzOFZ
[考研] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 13:51 by VOMexwnDzOFZ
[硕博家园] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 13:45 by VOMexwnDzOFZ
[找工作] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +3 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 10:54 by VOMexwnDzOFZ
[找工作] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +4 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 10:34 by VOMexwnDzOFZ
[考博] 招收博士生一名 +3 mandolin 2026-10-10 3/150 2026-10-11 10:21 by 不是山谷!
[公派出国] 售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急 +4 qR2AdCWTVtkw 2026-10-09 4/200 2026-10-11 03:14 by M0zrYVSAnxpE
信息提示
请填处理意见