Gas-phase synthesis of morphology-controlled Pt nanoparticles and their impact on cinnamaldehyde hydrogenation

2019 ◽  
Vol 9 (9) ◽  
pp. 2097-2102 ◽  
Author(s):  
Sosuke Kato ◽  
Junya Ohyama ◽  
Masato Machida ◽  
Atsushi Satsuma
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Gas Phase ◽  
Pt Nanoparticles ◽  
High Catalytic Activity ◽  
Protective Agent ◽  
Phase Synthesis ◽  
Gas Phase Synthesis ◽  
Cinnamaldehyde Hydrogenation

Pt nanoparticles of which morphology is controlled by gas-phase synthesis using carbon monoxide as a protective agent show high catalytic activity and selectivity for cinnamaldehyde hydrogenation.

Effect of dealumination on the catalytic activity of acid zeolites for the gas phase synthesis of MTBE

1994 ◽  
Vol 119 (1) ◽  
pp. 69-81 ◽  
Author(s):  
A.A. Nikolopoulos ◽  
A. Kogelbauer ◽  
J.G. Goodwin ◽  
G. Marcelin
Keyword(s):  
Catalytic Activity ◽  
Gas Phase ◽  
Phase Synthesis ◽  
Gas Phase Synthesis ◽  
Acid Zeolites

Structure, Acidity, and Catalytic Activity of Mesoporous Acid Catalysts for the Gas-Phase Synthesis of MTBE from MeOH and Bu OH

2002 ◽  
Vol 211 (2) ◽  
pp. 566
Author(s):  
Q.-H. Xia ◽  
K. Hidajat ◽  
S. Kawi ◽  
Q.-H. Xia ◽  
K. Hidajat ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Gas Phase ◽  
Acid Catalysts ◽  
Phase Synthesis ◽  
Gas Phase Synthesis

Engineering high-performance Pd core–MgO porous shell nanocatalysts via heterogeneous gas-phase synthesis

Nanoscale ◽  
2015 ◽  
Vol 7 (32) ◽  
pp. 13387-13392 ◽  
Author(s):  
Vidyadhar Singh ◽  
Cathal Cassidy ◽  
Frank Abild-Pedersen ◽  
Jeong-Hwan Kim ◽  
Kengo Aranishi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Gas Phase ◽  
High Performance ◽  
Pd Nanoparticles ◽  
Phase Synthesis ◽  
Porous Shell ◽  
Gas Phase Synthesis

The porous MgO shell inhibited the sintering/coalescence of the Pd nanoparticles, while preserving their catalytic activity.

scholarly journals CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131 ◽  
Author(s):  
Rola Mohammad Al Soubaihi ◽  
Khaled Mohammad Saoud ◽  
Myo Tay Zar Myint ◽  
Mats A. Göthelid ◽  
Joydeep Dutta
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Active Sites ◽  
Bond Activation ◽  
Dissociative Adsorption ◽  
High Catalytic Activity ◽  
Good Catalytic Activity ◽  
Pretreatment Conditions ◽  
Oxidation Efficiency

Carbon monoxide (CO) oxidation is considered an important reaction in heterogeneous industrial catalysis and has been extensively studied. Pd supported on SiO2 aerogel catalysts exhibit good catalytic activity toward this reaction owing to their CO bond activation capability and thermal stability. Pd/SiO2 catalysts were investigated using carbon monoxide (CO) oxidation as a model reaction. The catalyst becomes active, and the conversion increases after the temperature reaches the ignition temperature (Tig). A normal hysteresis in carbon monoxide (CO) oxidation has been observed, where the catalysts continue to exhibit high catalytic activity (CO conversion remains at 100%) during the extinction even at temperatures lower than Tig. The catalyst was characterized using BET, TEM, XPS, TGA-DSC, and FTIR. In this work, the influence of pretreatment conditions and stability of the active sites on the catalytic activity and hysteresis is presented. The CO oxidation on the Pd/SiO2 catalyst has been attributed to the dissociative adsorption of molecular oxygen and the activation of the C-O bond, followed by diffusion of adsorbates at Tig to form CO2. Whereas, the hysteresis has been explained by the enhanced stability of the active site caused by thermal effects, pretreatment conditions, Pd-SiO2 support interaction, and PdO formation and decomposition.

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