Syngas production from CH4 dry reforming over Co–Ni/Al2O3 catalyst: Coupled reaction-deactivation kinetic analysis and the effect of O2 co-feeding on H2:CO ratio

2012 ◽  
Vol 37 (22) ◽  
pp. 17019-17026 ◽  
Author(s):  
Say Yei Foo ◽  
Chin Kui Cheng ◽  
Tuan-Huy Nguyen ◽  
Adesoji A. Adesina
Keyword(s):  
Kinetic Analysis ◽  
Dry Reforming ◽  
Syngas Production ◽  
Coupled Reaction ◽  
Al2o3 Catalyst

Effect of Methyl Chloride on Landfill Gas Dry Reforming

2012 ◽  
Author(s):  
McKenzie P. Kohn ◽  
Marco J. Castaldi ◽  
Robert J. Farrauto
Keyword(s):  
Landfill Gas ◽  
Methyl Chloride ◽  
Dry Reforming ◽  
Liquid Fuels ◽  
Carbon Formation ◽  
Syngas Production ◽  
Engine Combustion ◽  
Mixture Prior ◽  
Activity Decrease ◽  
Al2o3 Catalyst

Landfills are the second-largest source of anthropogenic methane emissions in the U.S., accounting for 22% of CH4 emissions. Landfill gas (LFG) is primarily composed of CH4 and CO2, and currently only 18% of this is used for energy. Because landfills will continue to be used for the foreseeable future, complete utilization of LFG is becoming more important as the demand for energy increases. Catalytically reforming LFG produces syngas (H2 and CO) that can be converted to liquid fuels or mixed into the LFG stream to produce a more reactive, cleaner burning fuel. It has been demonstrated that injecting 5% syngas into a simulated LFG mixture prior to engine combustion decreases CO, UHC, and NOx emissions by 73%, 89%, and 38%, respectively. One barrier to using LFG in a catalytic system is the contaminant content of the LFG, including chlorine and sulfur compounds, higher order hydrocarbons, and siloxanes that have the potential to poison a catalyst. Chlorinated compounds are present in LFG at 10–100ppm levels and are often found as chlorocarbons. This research explores the effect of methyl chloride on the activity of a Rh/γ-Al2O3 catalyst while dry reforming LFG to syngas. It has been found that methyl chloride acts as a reversible poison on the dry reforming reaction, causing a loss in dry reforming activity, decrease in syngas production, and increase in H2/CO ratio while CH3Cl is present in the feed. CH3Cl exposure also decreases the acidity of the catalyst which decreases carbon formation and deactivation due to coking.

Syngas production from methane dry reforming over Ni/Al2O3 catalyst

2016 ◽  
Vol 42 (1) ◽  
pp. 269-288 ◽  
Author(s):  
Kavineshshen Selvarajah ◽  
Nguyen Huu Huy Phuc ◽  
Bawadi Abdullah ◽  
Feraih Alenazey ◽  
Dai-Viet N. Vo
Keyword(s):  
Dry Reforming ◽  
Methane Dry Reforming ◽  
Syngas Production ◽  
Al2o3 Catalyst

Ethanol dry reforming for syngas production over Ce-promoted Ni/Al2O3 catalyst

2016 ◽  
Vol 4 (4) ◽  
pp. 4830-4838 ◽  
Author(s):  
Mahadi B. Bahari ◽  
Nguyen Huu Huy Phuc ◽  
Bawadi Abdullah ◽  
Feraih Alenazey ◽  
Dai-Viet N. Vo
Keyword(s):  
Dry Reforming ◽  
Syngas Production ◽  
Al2o3 Catalyst

scholarly journals Influence of Lanthanide Promoters on Ni/SBA-15 Catalysts for Syngas Production by Methane Dry Reforming

2016 ◽  
Vol 148 ◽  
pp. 1388-1395 ◽  
Author(s):  
Osaze Omoregbe ◽  
Huong T. Danh ◽  
S.Z. Abidin ◽  
H.D. Setiabudi ◽  
Bawadi Abdullah ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Methane Dry Reforming ◽  
Syngas Production

Syngas production from dry reforming of methane over ni/perlite catalysts: Effect of zirconia and ceria impregnation

2018 ◽  
Vol 43 (36) ◽  
pp. 17142-17155 ◽  
Author(s):  
Farah Mesrar ◽  
Mohamed Kacimi ◽  
Leonarda F. Liotta ◽  
F. Puleo ◽  
Mahfoud Ziyad
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Syngas Production

scholarly journals Heterogeneous Catalytic Synthesis of 2-Methylbenzimidazole from 2-Nitroaniline and Ethanol Over Mg Modified Cu-Pd/γ-Al2O3

Catalysts ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 8 ◽  
Author(s):  
Feng Feng ◽  
Yaqin Deng ◽  
Zheng Cheng ◽  
Xiaoliang Xu ◽  
Qunfeng Zhang ◽  
...  
Keyword(s):  
Active Sites ◽  
Hydrogen Transfer ◽  
High Efficiency ◽  
Simple Procedure ◽  
Direct Synthesis ◽  
Reaction System ◽  
Simple Method ◽  
Heterogeneous Catalytic ◽  
Coupled Reaction ◽  
Al2o3 Catalyst

The direct synthesis of benzimidazoles from 2-nitroaniline and ethanol over Cu-Pd/γ-Al2O3 catalysts has the advantages of requiring easily available starting materials, having high efficiency, and a simple procedure. The modification by Mg of the Cu-Pd/γ-Al2O3 catalyst could improve the catalytic activity significantly. The addition of Mg to the Cu-Pd/γ-Al2O3 catalyst could maintain and promote the formation of CuPd alloy active sites. Meanwhile, the basicity of the support was enhanced appropriately by Mg, which generated more basic sites (Al-Oδ−) to accelerate the dehydrogenation of alcohol and increased the rate of the whole coupled reaction. The 2-nitroaniline was completely converted over Cu-Pd/(Mg)γ-Al2O3 after reacting for six hours, and the yield of 2-methylbenzimidazole was 98.8%. The results of this work provide a simple method to develop a more efficient catalyst for the “alcohol-dehydrogenation, hydrogen transfer and hydrogenation” coupled reaction system.

scholarly journals Characterization of Ag-promoted Ni/SiO2 Catalysts for Syngas Production via Carbon Dioxide (CO2) Dry Reforming of Glycerol

2016 ◽  
Vol 11 (2) ◽  
pp. 220 ◽  
Author(s):  
Norazimah Harun ◽  
Jolius Gimbun ◽  
Mohammad Tazli Azizan ◽  
Sumaiya Zainal Abidin
Keyword(s):  
Carbon Dioxide ◽  
Tubular Reactor ◽  
Dry Reforming ◽  
Bet Surface Area ◽  
Molar Ratio ◽  
Hydrogen Yield ◽  
Impregnation Method ◽  
Glycerol Conversion ◽  
Syngas Production

<p>The carbon dioxide (CO<sub>2</sub>) dry reforming of glycerol for syngas production is one of the promising ways to benefit the oversupply crisis of glycerol worldwide. It is an attractive process as it converts carbon dioxide, a greenhouse gas into a synthesis gas and simultaneously removed from the carbon biosphere cycle. In this study, the glycerol dry reforming was carried out using Silver (Ag) promoted Nickel (Ni) based catalysts supported on silicon oxide (SiO<sub>2</sub>) i.e. Ag-Ni/SiO<sub>2</sub>. The catalysts were prepared through wet impregnation method and characterized by using Brunauer-Emmett-Teller (BET) surface area, Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and Thermo Gravimetric (TGA) analysis. The experiment was conducted in a tubular reactor which condition fixed at 973 K and CO<sub>2</sub>:glycerol molar ratio of 1, under atmospheric pressure. It was found that the main gaseous products are H₂, CO and CH<sub>4</sub> with H₂:CO molar ratio &lt; 1.0. From the reaction study, Ag(5)-Ni/SiO<sub>2</sub> results in highest glycerol conversion and hydrogen yield, accounted for 32.6% and 27.4%, respectively. Copyright © 2016 BCREC GROUP. All rights reserved</p><p><em>Received: 22<sup>nd</sup> January 2016; Revised: 22<sup>nd</sup> February 2016; Accepted: 23<sup>rd</sup> February 2016</em></p><strong>How to Cite</strong>: Harun, N., Gimbun, J., Azizan, M.T., Abidin S.Z. (2016). Characterization of Ag-promoted Ni/SiO<sub>2</sub> Catalysts for Syngas Production via Carbon Dioxide (CO<sub>2</sub>) Dry Reforming of Glycerol. <em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 11 (2): 220-229 (doi:10.9767/bcrec.11.2.553.220-229)<p><strong>Permalink/DOI:</strong> http://dx.doi.org/10.9767/bcrec.11.2.553.220-229</p>

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