scholarly journals Direct synthesis of highly ordered large-pore functionalized mesoporous SBA-15 silica with methylaminopropyl groups and its catalytic reactivity in flavanone synthesis

2005 ◽  
Vol 85 (3) ◽  
pp. 241-251 ◽  
Author(s):  
Xueguang Wang ◽  
Yao-Hung Tseng ◽  
Jerry C.C. Chan ◽  
Soofin Cheng
Keyword(s):  
Direct Synthesis ◽  
Large Pore ◽  
Catalytic Reactivity

Direct Synthesis and Catalytic Reactivity of Highly Ordered Large-Pore Methylaminopropyl-Functionalized SBA-15 Materials

2005 ◽  
Vol 58 (7) ◽  
pp. 507 ◽  
Author(s):  
Xueguang Wang ◽  
Soofin Cheng
Keyword(s):  
Catalytic Activity ◽  
Inorganic Salt ◽  
Direct Synthesis ◽  
Initial Mixture ◽  
Tetraethyl Orthosilicate ◽  
High Catalytic Activity ◽  
Amino Groups ◽  
Large Pore ◽  
Catalytic Reactivity ◽  
First Time

Highly ordered large-pore SBA-15 materials functionalized with a high loading of amino groups were synthesized for the first time by co-condensation of tetraethyl orthosilicate (TEOS) and [3-(methylamino)propyl]trimethoxysilane (MAPTMS) using an amphiphilic block copolymer. Addition of inorganic salt to the initial mixture greatly enhanced the mesostructure ordering and stability of the mesoporous materials. The materials thus obtained showed high catalytic activity and selectivity for the synthesis of flavanones by means of the Claisen–Schmidt condensation in the absence of solvent.

Functionalization of large-pore mesoporous silicas with organosilanes by direct synthesis

2004 ◽  
Vol 72 (1-3) ◽  
pp. 33-42 ◽  
Author(s):  
A.S Maria Chong ◽  
X.S Zhao ◽  
Angeline T Kustedjo ◽  
S.Z Qiao
Keyword(s):  
Direct Synthesis ◽  
Mesoporous Silicas ◽  
Large Pore

Direct synthesis, characterization and solid-state NMR spectroscopy of large-pore vinyl-functionalized cubic mesoporous silica FDU-12

2006 ◽  
Vol 97 (1-3) ◽  
pp. 9-20 ◽  
Author(s):  
Hsien-Ming Kao ◽  
Pai-Ching Chang ◽  
Jyun-Da Wu ◽  
Anthony S.T. Chiang ◽  
Chiou-Hwang Lee
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Mesoporous Silica ◽  
Solid State Nmr ◽  
Direct Synthesis ◽  
Solid State Nmr Spectroscopy ◽  
Large Pore ◽  
Cubic Mesoporous

Direct synthesis of acid–base bifunctional mesoporous MCM-41 silica and its catalytic reactivity in Deacetalization–Knoevenagel reactions

2010 ◽  
Vol 134 (1-3) ◽  
pp. 44-50 ◽  
Author(s):  
Fanpeng Shang ◽  
Jianrui Sun ◽  
Shujie Wu ◽  
Ying Yang ◽  
Qiubin Kan ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Acid Base ◽  
Catalytic Reactivity ◽  
Mcm 41

scholarly journals Direct Synthesis and Catalytic Applications of Ordered Large Pore Aminopropyl-Functionalized SBA-15 Mesoporous Materials

2005 ◽  
Vol 109 (5) ◽  
pp. 1763-1769 ◽  
Author(s):  
Xueguang Wang ◽  
Kyle S. K. Lin ◽  
Jerry C. C. Chan ◽  
Soofin Cheng
Keyword(s):  
Mesoporous Materials ◽  
Direct Synthesis ◽  
Large Pore ◽  
Catalytic Applications

The direct synthesis of mesoporous structured MnO2/TiO2nanocomposite: a novel visible-light active photocatalyst with large pore size

2008 ◽  
Vol 19 (18) ◽  
pp. 185604 ◽  
Author(s):  
Min Xue ◽  
Li Huang ◽  
Jian-Qiang Wang ◽  
Ying Wang ◽  
Ling Gao ◽  
...  
Keyword(s):  
Visible Light ◽  
Pore Size ◽  
Direct Synthesis ◽  
Large Pore ◽  
Visible Light Active ◽  
Large Pore Size

scholarly journals Direct Synthesis of Ti-Containing CFI-Type Extra-Large-Pore Zeolites in the Presence of Fluorides

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 257
Author(s):  
Yichen Wang ◽  
Hongjuan Wang ◽  
Yuanchao Shao ◽  
Tianduo Li ◽  
Takashi Tatsumi ◽  
...  
Keyword(s):  
Hydrofluoric Acid ◽  
High Performance ◽  
Direct Synthesis ◽  
Ammonium Fluoride ◽  
Acid System ◽  
Oxidation Reactions ◽  
Cyclohexene Oxidation ◽  
High Demand ◽  
Large Pore ◽  
Large Pore Zeolites

Ti-containing zeolites showed extremely high activity and selectivity in numerous friendly environmental oxidation reactions with hydrogen peroxide as a green oxidant. It will be in high demand to synthesize Ti-containing crystalline extra-large-pore zeolites due to the severe restrictions of medium-pore and/or large-pore zeolites for bulky reactant oxidations. However, the direct synthesis of extra-large-pore Ti-zeolites was still challengeable. Here, we firstly report a strategy to directly synthesize high-performance Ti-containing CFI-type extra-large-pore (Ti-CFI) zeolites assisted with fluorides. The well-crystallized Ti-CFI zeolites with framework titanium species could be synthesized in the hydrofluoric acid system with seed or in the ammonium fluoride system without seed, which showed higher catalytic activity for cyclohexene oxidation than that synthesized from the traditional LiOH system.

Direct synthesis and catalytic activity of ordered large pore titanium-substituted spherical SBA-15 molecular sieves

2012 ◽  
Vol 106 (1) ◽  
pp. 245-256 ◽  
Author(s):  
Shengwen Chen ◽  
Changwen Ma ◽  
Minmin Qin ◽  
Haifeng Yang ◽  
Hongyong Xie ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Molecular Sieves ◽  
Direct Synthesis ◽  
Large Pore
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