ChemInform Abstract: Heterogeneous Catalysts for Liquid-Phase Oxidations: Philosophers′ Stones or Trojan Horses?

ChemInform ◽  
2010 ◽  
Vol 29 (49) ◽  
pp. no-no
Author(s):  
R. A. SHELDON ◽  
M. WALLAU ◽  
I. W. C. E. ARENDS ◽  
U. SCHUCHARDT
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts

scholarly journals Solvent inhibition in the liquid-phase catalytic oxidation of 1,4-butanediol: understanding the catalyst behaviour from NMR relaxation time measurements

2016 ◽  
Vol 6 (21) ◽  
pp. 7896-7901 ◽  
Author(s):  
Carmine D'Agostino ◽  
Mark R. Feaviour ◽  
Gemma L. Brett ◽  
Jonathan Mitchell ◽  
Andrew P. E. York ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Liquid Phase ◽  
Catalytic Oxidation ◽  
Heterogeneous Catalysts ◽  
Nmr Relaxation ◽  
Nmr Relaxation Time

Solvent inhibition over surfaces affects behaviour and performances of heterogeneous catalysts.

MOFs as Heterogeneous Catalysts in Liquid Phase Reactions

2018 ◽  
pp. 379-398 ◽  
Author(s):  
Maksym Opanasenko ◽  
Petr Nachtigall ◽  
Jiří Čejka
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts

scholarly journals Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

2017 ◽  
Vol 19 (22) ◽  
pp. 5269-5302 ◽  
Author(s):  
Willinton Y. Hernández ◽  
Jeroen Lauwaert ◽  
Pascal Van Der Voort ◽  
An Verberckmoes
Keyword(s):  
Liquid Phase ◽  
Layered Double Hydroxides ◽  
Heterogeneous Catalysts ◽  
Recent Advances ◽  
Lignocellulosic Feedstock ◽  
Different Types ◽  
Double Hydroxides

Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase.

Various ligand-stabilized metal nanoclusters as homogeneous and heterogeneous catalysts in the liquid phase

2001 ◽  
Vol 15 (3) ◽  
pp. 178-196 ◽  
Author(s):  
Naoki Toshima ◽  
Yukihide Shiraishi ◽  
Toshiharu Teranishi ◽  
Mikio Miyake ◽  
Toshihiro Tominaga ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts ◽  
Metal Nanoclusters

scholarly journals Catalytic CO Oxidation and H2O2 Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 949
Author(s):  
Lucas Warmuth ◽  
Gülperi Nails ◽  
Maria Casapu ◽  
Sheng Wang ◽  
Silke Behrens ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Co Oxidation ◽  
Gas Phase ◽  
Surface Area ◽  
Heterogeneous Catalysts ◽  
Direct Synthesis ◽  
Pt Nanoparticles ◽  
Titania Nanotubes ◽  
Catalytic Co Oxidation ◽  
H2o2 Direct Synthesis

Titania nanotubes (TNTs) impregnated with Pd and Pt nanoparticles are evaluated as heterogeneous catalysts in different conditions in two reactions: catalytic CO oxidation (gas phase, up to 500 °C) and H2O2 direct synthesis (liquid phase, 30 °C). The TNTs are obtained via oxidation of titanium metal and the intermediate layer-type sodium titanate Na2Ti3O7. Thereafter, the titanate layers are exfoliated and show self-rolling to TNTs, which, finally, are impregnated with Pd or Pt nanoparticles at room temperature by using Pd(ac)2 and Pt(ac)2. The resulting crystalline Pd/TNTs and Pt/TNTs are realized with different lengths (long TNTs: 2.0–2.5 µm, short TNTs: 0.23–0.27 µm) and a specific surface area up to 390 m2/g. The deposited Pd and Pt particles are 2–5 nm in diameter. The TNT-derived catalysts show good thermal (up to 500 °C) and chemical stability (in liquid-phase and gas-phase reactions). The catalytic evaluation results in a low CO oxidation light-out temperature of 150 °C for Pt/TNTs (1 wt-%) and promising H2O2 generation with a productivity of 3240 molH2O2 kgPd−1 h−1 (Pd/TNTs, 5 wt-%, 30 °C). Despite their smaller surface area, long TNTs outperform short TNTs with regard to both CO oxidation and H2O2 formation.

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