全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用：99美元
投递稿件

查看量下载量

相关文章

更多...
催化学报  2014 

无有机模板剂体系水热合成Beta沸石中晶种的导向机理

DOI: 10.1016/S1872-2067(14)60089-9, PP. 1800-1810

Keywords: 无有机模板剂合成,Beta沸石,晶种法,晶种残体,晶种溶解片段

Full-Text   Cite this paper   Add to My Lib

Abstract:

？在无有机模板剂体系中研究了不同硅铝比和晶粒度Beta沸石晶种的结构导向行为,采用X射线衍射、X射线荧光光谱、扫描电镜、透射电镜、紫外-拉曼光谱、红外光谱和N2物理吸附等方法对不同晶化时间固相产物和Beta沸石产物进行了表征.结果表明,不同Beta沸石晶种,包括全硅晶种,均能够导向合成Beta沸石,而且晶种在晶化诱导期都发生溶解.但是,晶种的硅铝比、晶粒度、预处理(焙烧)以及晶种加入的时间对晶种的溶解行为、Beta沸石晶化过程和产物都有重要影响.形貌研究还发现,含铝晶种不仅溶解后的残体通过提供晶核聚集的"固载化"表面导向了新生Beta沸石小晶体的密集生长,而且溶解下来的结构片段也提供了分散的晶核导向形成相对分散的Beta沸石小晶体;全硅晶种则仅通过溶解下来的结构片段提供分散的晶核.在无模板体系中,使用适当高硅铝比、小晶粒和经过焙烧处理的Beta沸石作为晶种有利于合成得到高结晶度的Beta沸石纯相.

 References

[1]  Newsam J M, Treacy M M J, Koetsier W T, De Gruyter C B. Proc R Soc Lond A, 1988, 420: 375
[2]  Higgins J B, LaPierre R B, Schlenker J L, Rohrman A C, Wood J D, Kerr G T, Rohrbaugh W J. Zeolites, 1988, 8: 446
[3]  Varanasi S R, Kumar P, Puranik V R, Umarji A, Yashonath S. Microporous Mesoporous Mater, 2009, 125: 135
[4]  Nur H, Ramli Z, Efendi J, Rahman A N A, Chandren S, Yuan L S. Catal Commun, 2011, 12: 822
[5]  Wu Y H, Tian F P, Liu J, Song D, Jia C Y, Chen Y Y. Microporous Mesoporous Mater, 2012, 162: 168
[6]  Batalha N, Morisset S, Pinard L, Maupin I, Lemberton J L, Lemos F, Pouilloux Y. Microporous Mesoporous Mater, 2013, 166: 161
[7]  Horá?ek J, ？t'ávová G, Kelbichová V, Kubi?ka D. Catal Today, 2013, 204: 38
[8]  Mihályi R M, Lónyi F, Beyer H K, Szegedi á, Kollár M, Pál-Borbély G, Valyon J. J Mol Catal A, 2013, 367: 77
[9]  Mu X H, Wang D Z, Wang Y R, Lin M, Cheng S B, Shu X T. Chin J Catal (慕旭宏, 王殿中, 王永睿, 林民, 程时标, 舒兴田. 催化学报), 2013, 34: 69
[10]  Wadlinger R L, Kerr G T, Rosinski E J. US Patent 3 308 069. 1967
[11]  Caullet P, Hazm J, Guth J L, Joly J F, Lynch J, Raatz F. Zeolites, 1992, 12: 240
[12]  Eapen M J, Reddy K S N, Shiralkar V P. Zeolites, 1994, 14: 295
[13]  Iyoki K, Itabashi K, Okubo T. Chem Asian J, 2013, 8: 1419
[14]  Itabashi K, Kamimura Y, Iyoki K, Shimojima A, Okubo T. J Am Chem Soc, 2012, 134: 11542
[15]  Iyoki K, Itabashi K, Okubo T. Microporous Mesoporous Mater, 2014, 189: 22
[16]  Mostowicz R, Testa F, Crea F, Aiello R, Fonseca A, Nagy J B. Zeolites, 1997, 18: 308
[17]  Qi X L, Liu X Y, Lin B X. Chin J Catal (祁晓岚, 刘希尧, 林炳雄. 催化学报), 2000, 21: 75
[18]  Xie B, Song J W, Ren L M, Ji Y Y, Li J X, Xiao F S. Chem Mater, 2008, 20: 4533
[19]  Majano G, Delmotte L, Valtchev V, Mintova S. Chem Mater, 2009, 21: 4184
[20]  Kamimura Y, Chaikittisilp W, Itabashi K, Shimojima A, Okubo T. Chem Asian J, 2010, 5: 2182
[21]  Kamimura Y, Tanahashi S, Itabashi K, Sugawara A, Wakihara T, Shimojima A, Okubo T. J Phys Chem C, 2011, 115: 744
[22]  Xie B, Zhang H Y, Yang C G, Liu S Y, Ren L M, Zhang L, Meng X J, Yilmaz B, Müller U, Xiao F S. Chem Commun, 2011, 47: 3945
[23]  Zhang H Y, Xie B, Meng X J, Müller U, Yilmaz B, Feyen M, Maurer S, Gies H, Tatsumi T, Bao X H, Zhang W P, Vos D D, Xiao F S. Microporous Mesoporous Mater, 2013, 180: 123
[24]  Cundy C S, Cox P A. Microporous Mesoporous Mater, 2005, 82: 1
[25]  Camblor M A, Corma A, Valencia S. Microporous Mesoporous Mater, 1998, 25: 59
[26]  Xu R R, Pang W Q. Chemistry: Zeolites and Porous Materials. Beijing: Science Press (徐如人, 庞文琴. 分子筛与多孔材料化学. 北京: 科学出版社), 2004. 130
[27]  Kiricsi I, Flego C, Pazzuconi G, Parker W O Jr, Millini R, Perego C, Bellussi G. J Phys Chem, 1994, 98: 4627
[28]  Blasco T, Camblor M A, Corma A, Esteve P, Guil J M, Martínez A, Perdigón-Melón J A, Valencia S. J Phys Chem B, 1998, 102: 75
[29]  Tosheva L, Mihailova B, Valtchev V, Sterte J. Microporous Mesoporous Mater, 2001, 48: 31
[30]  Mihailova B, Valtchev V, Mintova S, Faust A C, Petkov N, Bein T. Phys Chem Chem Phys, 2005, 7: 2756
[31]  Majano G, Mintova S, Ovsitser O, Mihailova B, Bein T. Microporous Mesoporous Mater, 2005, 80: 227

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133