Kinetic Study of the Decomposition of 2,6-Diethylaniline in the Presence of 1,2,3,4-Tetrahydroquinoline over a Sulfided NiMo-Al2O3 Catalyst. I. Effect of the partial pressure of nitrogen compounds

The effect of CO2 partial pressure on ethanol dry reforming was evaluated over 5%Ce-10%Co/Al2O3 catalyst at = PCO2 = 20-50 kPa, PC2H5OH = 20 kPa, reaction temperature of 973 K under atmospheric pressure. The catalyst was prepared by using impregnation method and tested in a fixed-bed reactor. X-ray diffraction measurements studied the formation of Co3O4, spinel CoAl2O4 and CeO2, phases on surface of 5%Ce-10%Co/Al2O3 catalyst. CeO2, CoO and Co3O4 oxides were obtained during temperature–programmed calcination. Ce-promoted 10%Co/Al2O3 catalyst possessed high BET surface area of 137.35 m2 g-1. C2H5OH and CO2 conversions was improved with increasing CO2 partial pressure from 20-50 kPa whilst the optimal selectivity of H2 and CO was achieved at 50 kPa.

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A Kinetic Study of NO Reduction by CO over a NiO/Al2O3 Catalyst

Reaction Kinetics and the Development and Operation of Catalytic Processes, Proceedings of the 3rd International Symposium - Studies in Surface Science and Catalysis ◽

10.1016/s0167-2991(01)81955-8 ◽

2001 ◽

pp. 131-138 ◽

Cited By ~ 2

Author(s):

T.N. Angelidis ◽

M. Papapetrou

Keyword(s):

Kinetic Study ◽

No Reduction ◽

No Reduction By Co ◽

Al2o3 Catalyst

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Coke Formation on Pt–Sn/Al2O3 Catalyst in Propane Dehydrogenation: Coke Characterization and Kinetic Study

Topics in Catalysis ◽

10.1007/s11244-011-9708-8 ◽

2011 ◽

Vol 54 (13-15) ◽

pp. 888-896 ◽

Cited By ~ 75

Author(s):

Qing Li ◽

Zhijun Sui ◽

Xinggui Zhou ◽

Yian Zhu ◽

Jinghong Zhou ◽

...

Keyword(s):

Kinetic Study ◽

Coke Formation ◽

Propane Dehydrogenation ◽

Coke Characterization ◽

Al2o3 Catalyst

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A kinetic study of the methanation of CO2 over Ni−Al2O3 catalyst

Reaction Kinetics and Catalysis Letters ◽

10.1007/bf02062098 ◽

1988 ◽

Vol 37 (2) ◽

pp. 451-456 ◽

Cited By ~ 6

Author(s):

G. M. Shashidhara ◽

M. Ravindram

Keyword(s):

Kinetic Study ◽

Al2o3 Catalyst

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Effect of nitrogen compounds in the hydrodesulfurization of straight-run gas oil using a CoMoP/g-Al2O3 catalyst

Fuel ◽

10.1016/j.fuel.2014.08.008 ◽

2014 ◽

Vol 138 ◽

pp. 98-103 ◽

Cited By ~ 16

Author(s):

José Luis García-Gutiérrez ◽

Georgina C. Laredo ◽

Gustavo A. Fuentes ◽

Ponciano García-Gutiérrez ◽

Federico Jiménez-Cruz

Keyword(s):

Nitrogen Compounds ◽

Gas Oil ◽

Al2o3 Catalyst

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Kinetic Study of the Competitive Growth Between θ-Al2O3 and α-Al2O3 During the Early Stages of Oxidation of β-(Ni,Pt)Al Bond Coat Systems: Effects of Low Oxygen Partial Pressure and Temperature

Metallurgical and Materials Transactions A ◽

10.1007/s11661-014-2669-3 ◽

2014 ◽

Vol 46 (2) ◽

pp. 726-738 ◽

Cited By ~ 16

Author(s):

J. M. Alvarado-Orozco ◽

R. Morales-Estrella ◽

M. S. Boldrick ◽

G. Trapaga-Martinez ◽

B. Gleeson ◽

...

Keyword(s):

Oxygen Partial Pressure ◽

Partial Pressure ◽

Kinetic Study ◽

Bond Coat ◽

Competitive Growth ◽

Low Oxygen ◽

Early Stages ◽

Α Al2o3

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Use of the O2-Thiosemicarbazide System, for the Leaching of: Gold and Copper from WEEE & Silver Contained in Mining Wastes

Materials ◽

10.3390/ma14237329 ◽

2021 ◽

Vol 14 (23) ◽

pp. 7329

Author(s):

Eduardo Cerecedo-Sáenz ◽

Edgar A. Cárdenas-Reyes ◽

Abner H. Rojas-Calva ◽

Ma. Isabel Reyes-Valderrama ◽

Ventura Rodríguez-Lugo ◽

...

Keyword(s):

Partial Pressure ◽

Environmental Pollution ◽

Kinetic Study ◽

Chemical Reaction ◽

Electronic Equipment ◽

Mining Wastes ◽

Reagent Concentration ◽

Market Effect ◽

O2 Partial Pressure ◽

Reaction Orders

Environmental pollution today is a latent risk for humanity, here the need to recycle waste of all kinds. This work is related to the kinetic study of the leaching of gold and copper contained in waste electrical and electronic equipment (WEEE) and silver contained in mining wastes (MW), using the O2-thiosemicarbazide system. The results obtained show that this non-toxic leaching system is adequate for the leaching of said metals. Reaction orders were found ranging from 0 (Cu), 0.93 (Ag), and 2.01 (Au) for the effect of the reagent concentration and maximum recoveries of 77.7% (Cu), 95.8% (Au), and 60% (Ag) were obtained. Likewise, the activation energies found show that the leaching of WEEE is controlled by diffusion (Cu Ea = 9.06 and Au Ea = 18.25 kJ/Kmol), while the leaching of MW (Ea = 45.55 kJ/Kmol) is controlled by the chemical reaction. For the case of stirring rate, it was found a low effect and only particles from WEEE and MW must be suspended in solution to proceed with the leaching. The pH has effect only at values above 8, and finally, for the case of MW, the O2 partial pressure has a market effect, going the Ag leaching from 33% at 0.2 atm up to 60% at a 1 atm.

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