Durability and Fuel Economy Experience with Dual Bed Catalyst System

1975 ◽  
Author(s):  
F. M. Dunlevey ◽  
R. R. Steiner
Keyword(s):  
Fuel Economy ◽  
Catalyst System ◽  
Dual Bed

Investigation of Methane Oxidation Reactions Over a Dual-Bed Catalyst System using18O Labelled DRIFTS coupling

ChemSusChem ◽  
2016 ◽  
Vol 10 (1) ◽  
pp. 210-219 ◽  
Author(s):  
Melissandre Richard ◽  
Daniel Duprez ◽  
Nicolas Bion ◽  
Fabien Can
Keyword(s):  
Methane Oxidation ◽  
Catalyst System ◽  
Oxidation Reactions ◽  
Dual Bed

scholarly journals Direct Conversion of CO2 into Dimethyl Ether over Al2O3/Cu/ZnO Catalysts Prepared by Sequential Precipitation

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 524 ◽  
Author(s):  
Cheonwoo Jeong ◽  
Jinsung Kim ◽  
Ji-Hyeon Kim ◽  
Sunghoon Lee ◽  
Jong Wook Bae ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Catalyst System ◽  
Direct Conversion ◽  
Mixed Metal Oxide ◽  
Oxide Materials ◽  
Co2 Conversion ◽  
Activity Test ◽  
Sequential Precipitation ◽  
Dual Bed ◽  
Complete Precipitation

Bifunctional Al2O3/Cu/ZnO catalysts with Al composition of between 30 mol% and 80 mol% were prepared by sequential precipitation (SP) for the conversion of CO2 into dimethyl ether (DME). In the SP synthesis, the concentration of a precipitation agent managed to be high enough to induce the complete precipitation of Al3+. The prepared precipitates were composed of zincian malachite and amorphous AlO(OH). Furthermore, the calcined mixed metal oxide materials of 60% and 80% Al exhibited a higher acidity than commercial Al2O3 and the H2-reduced catalysts showed the similar Cu dispersion of 6%–7% at all Cu loadings. In the activity test at 573 K and 50 bar, the SP-derived catalyst of 80% Al (SP-80) displayed the best performance corresponding to CO2 conversion of 25% and DME selectivity of 75% that are close to equilibrium values. In order to overcome the thermodynamic limitation, a dual-bed catalyst system was made up of SP-80 in the first layer and zeolite ferrierite in the next. This approach enabled DME selectivity to be enhanced to 90% while CO2 conversion increased a little. Consequently, the studied catalyst system based on the SP-derived catalysts can contribute greatly to selective DME production from CO2.

A dual-bed lean deNO catalyst system consisting of NO–H2–O2 reaction and subsequent N2O decomposition

2002 ◽  
Vol 3 (6) ◽  
pp. 233-238 ◽  
Author(s):  
M. Machida ◽  
T. Watanabe ◽  
S. Ikeda ◽  
T. Kijima
Keyword(s):  
N2o Decomposition ◽  
Catalyst System ◽  
Dual Bed

Dual-bed catalyst system for C–C coupling of biomass-derived oxygenated hydrocarbons to fuel-grade compounds

2010 ◽  
Vol 12 (2) ◽  
pp. 223 ◽  
Author(s):  
Elif I. Gürbüz ◽  
Edward L. Kunkes ◽  
James A. Dumesic
Keyword(s):  
Catalyst System ◽  
Oxygenated Hydrocarbons ◽  
Dual Bed

Direct synthesis of gasoline and diesel range branched alkanes with acetone from lignocellulose

2016 ◽  
Vol 18 (13) ◽  
pp. 3707-3711 ◽  
Author(s):  
Xueru Sheng ◽  
Ning Li ◽  
Guangyi Li ◽  
Wentao Wang ◽  
Aiqin Wang ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Catalyst System ◽  
High Carbon ◽  
Carbon Yield ◽  
System P ◽  
Branched Alkanes ◽  
Dual Bed

C6–C15branched alkanes were synthesized in a high carbon yield (∼80%) with acetone and hydrogen over a dual-bed catalyst system.

Dual-bed catalyst system for improving product purity and catalytic stability in alkylbenzene transalkylation

2010 ◽  
Vol 385 (1-2) ◽  
pp. 73-79 ◽  
Author(s):  
Shang-Tien Tsai ◽  
Pei-Hsien Chao ◽  
Ikai Wang ◽  
Tseng-Chang Tsai
Keyword(s):  
Catalyst System ◽  
Catalytic Stability ◽  
Dual Bed
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