Synthesis of binderless FAU-X (13X) monoliths with hierarchical porosity 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Microporous and mesoporous materials: The offical journal of the International Zeolite Association
年/卷/期
2019 / 281 /
页码
57-65
ISSN号
1387-1811
作者单位
Univ Montpellier, Inst Charles Gerhardt Montpellier, ENSCM, UMR CNRS 5253, 240 Ave Prof Emile Jeanbrau, F-34296 Montpellier 5, France;Univ Montpellier, Inst Charles Gerhardt Montpellier, ENSCM, UMR CNRS 5253, 240 Ave Prof Emile Jeanbrau, F-34296 Montpellier 5, France;Univ Montpellier, Inst Charles Gerhardt Montpellier, ENSCM, UMR CNRS 5253, 240 Ave Prof Emile Jeanbrau, F-34296 Montpellier 5, France;UMR 7246 CNRS, Lab MADIREL, 141 Traverse Charles Susini, F-13013 Marseille, France;UMR 7246 CNRS, Lab MADIREL, 141 Traverse Charles Susini, F-13013 Marseille, France;UMR 7246 CNRS, Lab MADIREL, 141 Traverse Charles Susini, F-13013 Marseille, France;Univ Montpellier, UMR CNRS 5635, IEM, ENSCM, 2 Pl E Bataillon, F-34095 Montpellier, France;Univ Montpellier, Inst Charles Gerhardt Montpellier, ENSCM, UMR CNRS 5253, 240 Ave Prof Emile Jeanbrau, F-34296 Montpellier 5, France;Univ Montpellier, UMR CNRS 5635, IEM, ENSCM, 2 Pl E Bataillon, F-34095 Montpellier, France;Univ Montpellier, UMR CNRS 5635, IEM, ENSCM, 2 Pl E Bataillon, F-34095 Montpellier, France;Univ Montpellier, Inst Charles Gerhardt Montpellier, ENSCM, UMR CNRS 5253, 240 Ave Prof Emile Jeanbrau, F-34296 Montpellier 5, France;Univ Montpellier, Inst Charles Gerhardt Montpellier, ENSCM, UMR CNRS 5253, 240 Ave Prof Emile Jeanbrau, F-34296 Montpellier 5, France;
作者
Didi, Youcef;Said, Bilel;Cacciaguerra, Thomas;Khac Long Nguyen;Wernert, Veronique;Denoyel, Renaud;Co, Didier;Sebai, Wassim;Belleville, Marie-Pierre;Sanchez-Marcano, Jose;Fajula, Francois;Galarneau, Anne;
摘要
Self-standing binderless FAU-X monoliths with hierarchical trimodal porosity have been synthesized for the first time by a double pseudomorphic transformation. Parent silica monoliths obtained by the combination of spinodal decomposition and sol-gel process have first been synthesized. The silica monoliths have been then transformed into silica-alumina monoliths (0.25 < Al/Si < 0.40) in low NaOH concentration ([NaOH] = 0.24 mol/L) at 40 degrees C for 24 h. Silica-alumina monoliths have been then transformed into FAU-X monoliths featuring nanocrystals in the struts at high NaOH concentration ([NaOH] = 2.2 mol/L) with an aging step at 40 degrees C for 4 days and a crystallization step at 100 degrees C for 24 h. The FAU-X monoliths feature macropores with diameters adjustable from 3 to 20 mu m (similar to the parent silica monolith). The skeleton of the FAU-X monoliths is formed by an aggregation of two populations of FAU-X nanocrystals (100-200 nm/400-500 nm) generating a secondary porosity between the nanocrystals of 30-1000 nm in diameter, centered at 300 nm. The FAU-X monoliths present three levels of porosity with a macropore volume of ca. 1.0 mL/g, a secondary pore volume of ca. 0.40 mL/g and a micropore volume of 0.30 mL/g. These new FAU-X monoliths with hierarchical porous structure fulfill the requirements of high performance adsorbents for continuous flow process intensification.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
关键词/主题词
13X monolith;Binderless zeolite;Pseudomorphic transformation;Zeolite nanocrystal;Silica-alumina monolith;Spinodal decomposition;
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

意见反馈
返回顶部