Embedded Iron Nanoparticles in Carbon Nanogranules for Direct Synthesis of Lower Olefins

2016 ◽  
Vol 1 (15) ◽  
pp. 4736-4741 ◽  
Author(s):  
Indrajit K. Ghosh ◽  
Asgar Ali ◽  
Appasaheb Dukare ◽  
Umesh Kumar ◽  
Ankur Bordoloi
Keyword(s):  
Iron Nanoparticles ◽  
Direct Synthesis ◽  
Lower Olefins

scholarly journals Supported Iron Nanoparticles as Catalysts for Sustainable Production of Lower Olefins

Science ◽  
2012 ◽  
Vol 335 (6070) ◽  
pp. 835-838 ◽  
Author(s):  
H. M. Torres Galvis ◽  
J. H. Bitter ◽  
C. B. Khare ◽  
M. Ruitenbeek ◽  
A. I. Dugulan ◽  
...  
Keyword(s):  
Iron Nanoparticles ◽  
Sustainable Production ◽  
Lower Olefins ◽  
Supported Iron

Synthesis of lower olefins from syngas over Zn/Al2O3–SAPO-34 hybrid catalysts: role of doped Zr and influence of the Zn/Al2O3ratio

2018 ◽  
Vol 8 (14) ◽  
pp. 3527-3538 ◽  
Author(s):  
G. Raveendra ◽  
Congming Li ◽  
Bin Liu ◽  
Yang Cheng ◽  
Fanhui Meng ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Lower Olefins ◽  
Hybrid Catalysts

Hybrid catalysts composed of different loadings of Zr-promoted Zn/Al2O3with SAPO-34 zeolite were investigated for the direct synthesis of lower olefins from syngas in a fixed-bed reactor.

Direct synthesis of lower olefins from syngas via Fischer–Tropsch synthesis catalyzed by a dual-bed catalyst

2020 ◽  
Vol 485 ◽  
pp. 110824
Author(s):  
Yifeng Hou ◽  
Jifan Li ◽  
Ming Qing ◽  
Chun-Ling Liu ◽  
Wen-Sheng Dong
Keyword(s):  
Direct Synthesis ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Lower Olefins ◽  
Dual Bed

Research Progress of Catalysis for Low-Carbon Olefins Synthesis Through Hydrogenation of CO2

2019 ◽  
Vol 19 (6) ◽  
pp. 3162-3172 ◽  
Author(s):  
Qiang Wang ◽  
Yao Chen ◽  
Zhenhua Li
Keyword(s):  
Global Warming ◽  
Fossil Fuels ◽  
Direct Synthesis ◽  
Value Added ◽  
Raw Material ◽  
Research Progress ◽  
Low Carbon ◽  
Active Components ◽  
Lower Olefins ◽  
Hydrogenation Of Co

Fossil fuel consumption, global warming, climate change, and price fluctuation of fuels push scientists to search for alternative ways to produce fuel. From the viewpoint of CO2 capture and utilization, using CO2 as raw material to produce value-added products is attractive because it can not only alleviate global warming but also offers a solution to replace dwindling fossil fuels. Especially the technique of CO2 hydrogenation to low-carbon olefins including ethylene, propylene and butylene is highly attractive. However, due to the extreme inertness of CO2 and a high C–C coupling barrier, the conversion of CO2 and selectivity of C2–4 are not high. In addition, methane, as one main product in CO2 hydrogenation, inhibits the production of other long-chain hydrocarbons. So it is decisive to design effective catalyst system to increase C2–4 selectivity while decrease CH4 selectivity. This review focuses on two routes for low-carbon olefins synthesis from CO2 hydrogenation. The first route is direct synthesis of low-carbon olefins through CO2 hydrogenation process. The catalyst supports, promoters and bimetallic active components are inextricably related with hydrogenation of CO2 to lower olefins, which was reviewed in detail. The other route is indirect route for low-carbon olefins synthesis through hydrogenation of CO2 to methanol and subsequently methanol to lower olefins, which is briefly discussed.

Green synthesis of iron nanoparticles using flower extract of Piliostigma thonningii and their antibacterial activity evaluation

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Antibacterial Activity ◽  
Environmental Remediation ◽  
Iron Nanoparticles ◽  
Reduction Process ◽  
Xrd Analysis ◽  
Visible Range ◽  
Magnetic Storage ◽  
Ferrous Chloride ◽  
Flower Extract ◽  
Piliostigma Thonningii

Iron nanoparticles have gained tremendous attention due to their application in magnetic storage media, ferrofluids, biosensors, catalysts, separation processes, environmental remediation and antibacterial activity. In the present paper, iron nanoparticles were synthesized using aqueous flower extract of Piliostigma thonningii, a natural nontoxic herbal infusion. Iron nanoparticles were generated by reaction of ferrous chloride solution with the flower extract. The reductants present in the flower extract acted as reducing and stabilizing agents. UV-vis analysis of the iron nanoparticles showed continuous absorption in the visible range suggesting the iron nanoparticles were amorphous. This was confirmed by X-ray diffraction (XRD) analysis which did not have distinct diffraction peaks. Scanning electron microscopy (SEM) analysis revealed that the synthesized iron nanoparticles were aggregated as irregular clusters with rough surfaces. FT-IR studies showed the functional groups that participated in the bio-reduction process to include a C-H stretch (due to alkane CH3, CH2 or CH), C=O stretch (due to aldehydes), O-H bend (due to tert-alcohol or phenol), C-O stretch (due to aldehydes or phenols) and C-O stretch (due to alcohols) corresponding to absorptions at 2929.00, 1721.53, 1405.19, 1266.31 and 1030.02 cm-1 respectively. The iron nanoparticles showed significant antibacterial activity against Escharichia coli and Staphylococcus aureus suggesting potential antibacterial application.

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