New and efficient heterogeneous catalytic system for Heck reaction: palladium colloid layer in situ reduced in the channel of mesoporous silica materials

2005 ◽  
Vol 283 (1-2) ◽  
pp. 85-89 ◽  
Author(s):  
Liang Li ◽  
Ling-Xia Zhang ◽  
Jian-Lin Shi ◽  
Ji-Na Yan ◽  
Jian Liang
Keyword(s):  
Mesoporous Silica ◽  
Catalytic System ◽  
Heck Reaction ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Silica Materials ◽  
Mesoporous Silica Materials

scholarly journals Direct propylene epoxidation with oxygen enabled by photo-electro-heterogeneous catalytic system

2021 ◽  
Author(s):  
Myohwa Ko ◽  
Yongseon Kim ◽  
Jinwoo Woo ◽  
Rashmi Mehrotra ◽  
Pankaj Sharma ◽  
...  
Keyword(s):  
Catalytic System ◽  
Environmentally Benign ◽  
Ambient Conditions ◽  
Propylene Epoxidation ◽  
Epoxidation Of Propylene ◽  
Heterogeneous Catalytic ◽  
External Bias ◽  
Heterogeneous Catalytic System ◽  
Sacrificial Agent

Abstract Propylene oxide (PO) is a crucial feedstock in the plastic industry. The direct epoxidation of propylene using O2 is considered to be the most promising means of producing PO, but it remains challenging. Here, we report on an integrated photo-electro-heterogeneous catalytic system for propylene epoxidation with O2. Bismuth vanadate (or TiO2) photocatalyst and Co-based electrocatalyst produce H2O2 and titanium silicalite-1 heterogeneous catalyst epoxidises propylene to PO with the in situ generated H2O2. This system enables PO production with O2 as the sole oxidising agent under light irradiation without using H2, a sacrificial agent, or external bias. It stably produces PO for 24 h with high selectivity (≥ 98%) under ambient conditions. These results demonstrate the potential of this new catalytic system to produce chemical compounds in an environmentally benign manner.

scholarly journals Mechanisms and Intermediates in the True Liquid Crystal Templating Synthesis of Mesoporous Silica Materials

2021 ◽  
Vol 125 (12) ◽  
pp. 3197-3207
Author(s):  
Johanna R. Bruckner ◽  
Jessica Bauhof ◽  
Jacqueline Gebhardt ◽  
Ann-Katrin Beurer ◽  
Yvonne Traa ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Mesoporous Silica ◽  
Silica Materials ◽  
Mesoporous Silica Materials ◽  
Liquid Crystal Templating ◽  
Templating Synthesis

Fl–DFO molecules@mesoporous silica materials: Highly sensitive and selective nanosensor for dosing with iron ions

2011 ◽  
Vol 358 (1) ◽  
pp. 136-145 ◽  
Author(s):  
Bao-Lian Su ◽  
Nicolas Moniotte ◽  
Noan Nivarlet ◽  
Li-Hua Chen ◽  
Zheng-Yi Fu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Iron Ions ◽  
Highly Sensitive ◽  
Silica Materials ◽  
Mesoporous Silica Materials
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