Study of Carbon Dioxide Hydrogenation to Hydrocarbons Over Iron-Based Catalysts: Synergistic Effect

2021 ◽  
Vol 13 (4) ◽  
pp. 317-324
Author(s):  
Isa Shahroudbari ◽  
Yaghoub Sarrafi ◽  
Yahya Zamani
Keyword(s):  
Carbon Dioxide ◽  
Synergistic Effect ◽  
Carbon Dioxide Hydrogenation ◽  
Iron Based ◽  
Iron Based Catalysts

Study of carbon dioxide hydrogenation to hydrocarbons over iron-based Catalysts: Synergistic effect

2021 ◽  
Vol 21 (3) ◽  
pp. 182
Author(s):  
Isa Shahroudbari ◽  
Yaghoub Sarrafi ◽  
Yahya Zamani
Keyword(s):  
Carbon Dioxide ◽  
Synergistic Effect ◽  
Fixed Bed Reactor ◽  
Process Conditions ◽  
Catalyst Characterization ◽  
Incipient Wetness Impregnation ◽  
Wide Range ◽  
Carbon Dioxide Hydrogenation ◽  
Iron Based ◽  
Iron Based Catalysts

The full article will be published in the English version of the  journal "Catalysis in Industry" No. 4, 2021.Hydrogenation of CO2 to CO and hydrocarbons is carried out over a wide range of catalysts. Group of VIIIB transition metals have proved high conversion and selectively for CO and methane. Meanwhile, low cost and effective catalysts are preferable in an industrial scale. In this work, the synergistic effect of iron content on the catalytic performance were investigated in carbon dioxide hydrogenation reaction. Incipient wetness impregnation procedure was used for the preparation of four γ-Al2O3 supported iron-based catalysts. BET, XRD, H2-TPR and TEM techniques were employed for the catalyst characterization. The evaluation of catalysts were carried out in a fixed bed reactor at the process conditions of temperature of 300 °C, pressure of 20 atm, H2 to CO2 ratio of 3 and GHSV of 3 nl.h–1·gCat–1. It was found that the promoter addition improves the activity of Fe catalyst for both Fischer – Tropsch synthesis (FTS) and Reverse Water Gas Shift (RWGS) reactions. The results showed that conversion of CO2 was from 15.6 to 35.6 % with major products of methane, C2 to C4, C5+ and CO. It was also found that impact of K and Ce promoters into iron catalyst showed the highest conversion and hydrocarbon yield due to the synergistic effect.

Iron-catalyzed photoreduction of carbon dioxide to synthesis gas

2016 ◽  
Vol 6 (10) ◽  
pp. 3623-3630 ◽  
Author(s):  
Pamela G. Alsabeh ◽  
Alonso Rosas-Hernández ◽  
Enrico Barsch ◽  
Henrik Junge ◽  
Ralf Ludwig ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Visible Light ◽  
Synthesis Gas ◽  
Sustainable Energy ◽  
Photocatalytic Reduction ◽  
The Sun ◽  
Energy Applications ◽  
Iron Based ◽  
Photocatalytic Processes ◽  
Iron Based Catalysts

Photocatalytic processes to convert CO2 to useful products including CO and HCOOH are of particular interest as a means to harvest the power of the sun for sustainable energy applications. Herein, we report the photocatalytic reduction of CO2 using iron-based catalysts and visible light generating varying ratios of synthesis gas.

Study on CO2 Hydrogenation to Ethylene with Iron-Based Catalyst

2013 ◽  
Vol 791-793 ◽  
pp. 112-115
Author(s):  
Chun Yan Su ◽  
Jian Qun Tan ◽  
Cheng Xue Wang
Keyword(s):  
Carbon Dioxide ◽  
Temperature Programmed Desorption ◽  
Molar Ratio ◽  
Impregnation Method ◽  
Active Components ◽  
Reaction Conditions ◽  
Reaction Pressure ◽  
Carbon Dioxide Hydrogenation ◽  
Iron Based ◽  
Temperature Programmed

Carbon dioxide hydrogenation to ethylene was investigated on Fe-Cu-K-Ce loading catalysts. These catalysts were prepared by impregnation method, and studied on the CO2conversion and the selectivity of ethylene. The proper carrier was obtained comparing with their catalytic activity. The loading contents of active components on carriers and reaction conditions were studied. Results show that the MgO-ZSM-5 are the best carrier, the content of Fe at 15% and the molar ratio of Fe: Cu: K: Ce with 100: 20: 8: 8 is better under the condition of reaction temperature and reaction pressure are 623K and 1.0Mpa respectively with CO2conversion of more than 60% and the selectivity of ethylene of more than 20%. The catalysts were characterized by CO2temperature-programmed desorption (CO2-TPD).

Adsorption mechanism of NH3, NO, and O2 molecules over FexOy/AC catalyst surface: a DFT-D3 study

2021 ◽  
Author(s):  
Chaoyue Xie ◽  
Yunlan Sun ◽  
Baozhong Zhu ◽  
Weiyi Song ◽  
Minggao Xu
Keyword(s):  
Activated Carbon ◽  
Adsorption Mechanism ◽  
Catalyst Surface ◽  
Specific Adsorption ◽  
Adsorption Mechanisms ◽  
Iron Based ◽  
Iron Based Catalysts ◽  
Supported Iron ◽  
Denox Efficiency

Activated carbon-supported iron-based catalysts (FexOy/AC) show excellent deNOx efficiency. However, the specific adsorption mechanisms of NH3, NO, and O2 molecules on their surfaces are still unknown. In this study, the...

Synergistic effect of phosphomolybdic acid on rhodium-based metal-organic frameworks for the efficient selective photocatalytic reduction of CO2 to CO

2021 ◽  
Author(s):  
Yurong Shan ◽  
Dexiang Liu ◽  
Chunyan Xu ◽  
Peng Zhan ◽  
Hui Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electronic Structure ◽  
Synergistic Effect ◽  
Metal Organic Frameworks ◽  
Phosphomolybdic Acid ◽  
Photocatalytic Reduction ◽  
Structure And Morphology ◽  
Spherical Structure ◽  
Metal Organic ◽  
Reduction Of Co2

In this work, PMA@NH2-MIL-68(Rh) with a mangosteen spherical structure was successfully synthesized by a hydrothermal method for the photocatalytic reduction of carbon dioxide. The electronic structure and morphology of the...

Revealing the Effect of Sodium on Iron-Based Catalysts for CO2 Hydrogenation: Insights from Calculation and Experiment

2021 ◽  
Author(s):  
Xianglin Liu ◽  
Chao Zhang ◽  
Pengfei Tian ◽  
Minjie Xu ◽  
Chenxi Cao ◽  
...  
Keyword(s):  
Co2 Hydrogenation ◽  
Iron Based ◽  
Iron Based Catalysts

Unraveling the Role of Zinc on Bimetallic Fe5C2–ZnO Catalysts for Highly Selective Carbon Dioxide Hydrogenation to High Carbon α-Olefins

ACS Catalysis ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2121-2133
Author(s):  
Chao Zhang ◽  
Chenxi Cao ◽  
Yulong Zhang ◽  
Xianglin Liu ◽  
Jing Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Carbon ◽  
Carbon Dioxide Hydrogenation

scholarly journals How bulk and surface properties of Ti4SiC3, V4SiC3, Nb4SiC3 and Zr4SiC3 tune reactivity: A computational study

2021 ◽  
Author(s):  
Matthew Quesne ◽  
C. Richard A. Catlow ◽  
Nora Henriette De Leeuw
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Surface Properties ◽  
In Silico ◽  
Computational Study ◽  
Max Phase ◽  
Early Transition Metal ◽  
Silicon Carbides ◽  
Carbon Dioxide Hydrogenation ◽  
Early Transition

We present several in silico insights into the MAX-phase of early transition metal silicon carbides and explore how these affect carbon dioxide hydrogenation. Periodic desity functional methodology is applied to...

scholarly journals A study on the selective catalytic reduction of NOx by ammonia on sulphated iron-based catalysts

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 40948-40959
Author(s):  
Caixia Liu ◽  
Huijun Wang ◽  
Yalian Bi ◽  
Ziyin Zhang
Keyword(s):  
Selective Catalytic Reduction ◽  
High Temperatures ◽  
Catalytic Reduction ◽  
Reduction Of Nox ◽  
Iron Based ◽  
Iron Based Catalysts

The roles of Fe3+ and SO42− are different at low and high temperatures due to their interaction. It is the appropriate contents of Fe3+ and SO42− that can result in high NH3-SCR activity at varying temperatures.

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