Promoting effect of zirconium oxide on Cu–Al2O3 catalyst for the hydrogenolysis of glycerol to 1,2-propanediol

2016 ◽  
Vol 6 (13) ◽  
pp. 4889-4900 ◽  
Author(s):  
Fufeng Cai ◽  
Wei Zhu ◽  
Guomin Xiao
Keyword(s):  
Catalytic Activity ◽  
Zirconium Oxide ◽  
Promoting Effect ◽  
Al2o3 Catalyst

The ZrO2-promoted Cu–Al2O3 catalyst presented excellent catalytic activity for the hydrogenolysis of glycerol to 1,2-propanediol.

Strong Promoting Effect of Gold Nanoparticles on the CO Abatement Catalytic Activity of CoO x /Clay‐Bonded SiC Catalysts Produced by AA‐MOCVD Method Using Co(acac) 2 as Precursor

2020 ◽  
Vol 5 (44) ◽  
pp. 13878-13887
Author(s):  
Golnoosh MirMoghtadaei ◽  
Manoj K. Ghosalya ◽  
Luca Artiglia ◽  
Jeroen A. Bokhoven ◽  
Cavus Falamaki
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Promoting Effect

scholarly journals Glycerol Hydrogenolysis with In Situ Hydrogen Produced via Methanol Steam Reforming: The Promoting Effect of Pd on a Cu/ZnO/Al2O3 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 110
Author(s):  
Yuanqing Liu ◽  
Chau T. Q. Mai ◽  
Flora T. T. Ng
Keyword(s):  
Steam Reforming ◽  
Catalyst Activity ◽  
Promoting Effect ◽  
Glycerol Conversion ◽  
Glycerol Hydrogenolysis ◽  
Glycerol Dehydration ◽  
Effect Of Pd ◽  
Al2o3 Catalyst ◽  
Reaction Equilibrium

The glycerol hydrogenolysis to produce 1,2-propanediol without using externally supplied hydrogen was investigated using methanol present in crude glycerol to provide in situ hydrogen via its steam reforming reaction. This paper focuses on the promoting effect of Pd on the reactivity of a Cu/Zn/Al2O3 catalyst. Adding 2 wt% Pd onto a Cu/ZnO/Al2O3 catalyst significantly improved the selectivity to 1,2-propanediol from 63.0% to 82.4% and the glycerol conversion from 70.2% to 99.4%. This enhancement on the catalytic activity by Pd is mainly due to the improved hydrogenation of acetol, which is the intermediate formed during the glycerol dehydration. The rapid hydrogenation of acetol can shift the reaction equilibrium of glycerol dehydration forward resulting in a higher glycerol conversion. The improved reducibility of the catalyst by Pd allows the catalyst to be reduced in situ during the reaction preventing any loss of catalyst activity due to any potential oxidation of the catalyst. The catalyst was slightly deactivated when it was firstly recycled resulting in a 5.4% loss of glycerol conversion due to the aggregation of Cu and the deactivation became less noticeable upon further recycling.

Effective toluene oxidation under ozone over mesoporous MnOx/γ-Al2O3 catalyst prepared by solvent deficient method: Effect of Mn precursors on catalytic activity

2021 ◽  
Vol 195 ◽  
pp. 110876
Author(s):  
Kannapu Hari Prasad Reddy ◽  
Beom-Sik Kim ◽  
Su Shiung Lam ◽  
Sang-Chul Jung ◽  
JiHyeon Song ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Toluene Oxidation ◽  
Method Effect ◽  
Al2o3 Catalyst

Fluidized bed ODH of ethane to ethylene over VO –MoO /γ-Al2O3 catalyst: Desorption kinetics and catalytic activity

2015 ◽  
Vol 278 ◽  
pp. 207-216 ◽  
Author(s):  
Idris A. Bakare ◽  
Shamseldin A. Mohamed ◽  
Sameer Al-Ghamdi ◽  
Shaikh A. Razzak ◽  
Mohammad M. Hossain ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fluidized Bed ◽  
Desorption Kinetics ◽  
Al2o3 Catalyst

Catalytic dehydrofluorination of 1,1,1,2-tetrafluoroethane to synthesize trifluoroethylene over a modified NiO/Al2O3 catalyst

2015 ◽  
Vol 5 (6) ◽  
pp. 3103-3107 ◽  
Author(s):  
Wenzhi Jia ◽  
Min Liu ◽  
Xuewei Lang ◽  
Chao Hu ◽  
Junhui Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Linear Relationship ◽  
Lewis Acid ◽  
Acid Sites ◽  
Lewis Acid Sites ◽  
Al2o3 Catalyst

The close linear relationship between Lewis acid sites and catalytic activity for the dehydrofluorination of CF3CFH2.

Synthesis, Characterization, and Catalytic Activity of Zirconium Oxide Nitrides Supported on High-surface SiO2 (In German)

2011 ◽  
Vol 66 ◽  
pp. 0147 ◽  
Author(s):  
N. Frenzel ◽  
T. Otremba ◽  
R. Schomäcker ◽  
T. Ressler ◽  
M. Lerch
Keyword(s):  
Catalytic Activity ◽  
Zirconium Oxide ◽  
High Surface
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