Preparation and characterization of active Ni-supported catalyst for syngas production

2015 ◽  
Vol 96 ◽  
pp. 78-86 ◽  
Author(s):  
S. Candamano ◽  
P. Frontera ◽  
A. Macario ◽  
F. Crea ◽  
J.B. Nagy ◽  
...  
Keyword(s):  
Supported Catalyst ◽  
Syngas Production ◽  
Ni Supported Catalyst

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>

Preparation and characterization of nano–copper oxide supported red-mud catalyst for liquid phase oxidation of ethyl benzene to acetophenone

2021 ◽  
Author(s):  
Subhashree Mishra ◽  
Rajaram Bal ◽  
Simon Watre Sangma ◽  
R. K. Dey
Keyword(s):  
Liquid Phase ◽  
Copper Oxide ◽  
Red Mud ◽  
Supported Catalyst ◽  
Cuo Nanoparticles ◽  
Liquid Phase Oxidation ◽  
Ethyl Benzene ◽  
Phase Oxidation

In this study, liquid phase oxidation of ethyl benzene to acetophenone was widely investigated using a new recyclable supported catalyst of CuO–nanoparticles impregnated over activated red–mud (CuO_AARM). The catalyst was...

La-Based Perovskites as Oxygen-Exchange Redox Materials for Solar Syngas Production

MRS Advances ◽  
2017 ◽  
Vol 2 (55) ◽  
pp. 3365-3370 ◽  
Author(s):  
Rahul R. Bhosale ◽  
Anand Kumar ◽  
Anchu Ashok ◽  
Parag Sutar ◽  
Gorakshnath Takalkar ◽  
...  
Keyword(s):  
Solution Combustion Synthesis ◽  
Scanning Transmission Electron Microscope ◽  
Bet Surface Area ◽  
Synthesis And Characterization ◽  
Solution Combustion ◽  
Syngas Production ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Synthesis Approach

ABSTRACTThis contribution reports the synthesis and characterization of La-based perovskites which can be used for the production of syngas via solar thermochemical splitting of H2O/CO2. The La-based perovskites were synthesized using a solution combustion synthesis approach. The derived perovskites were analyzed using powder X-ray diffractometer (PXRD), BET surface area analyzer (BET), and scanning/transmission electron microscope (SEM/TEM). The results associated with the synthesis and characterization of La-based perovskites is reported in detail.

scholarly journals Synthesis of Propylene Carbonate from Epoxide and CO2 Catalyzed by Carbon Nanotubes Supported Fe1.5PMo12O40

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Tahani Al-Garni ◽  
Nada Al-Jallal ◽  
Ahmed Aouissi
Keyword(s):  
Carbon Nanotubes ◽  
Propylene Carbonate ◽  
Inductively Coupled Plasma ◽  
Supported Catalyst ◽  
Catalyst Loading ◽  
X Ray Diffraction ◽  
Plasma Spectrometry ◽  
Inductively Coupled ◽  
Transmission Electron

Carbon nanotubes (CNTs) were functionalized and were then used as supports of Fe1.5PMo12O40 (FePMo) Keggin heteropolyanions catalysts. The characterization of the resulting catalysts was investigated by inductively coupled plasma spectrometry (ICP), Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) light spectroscopy, and transmission electron microscopy (TEM). FTIR and XRD results confirmed that FePMo was bounded on CNTs successfully and the Keggin structure was preserved. Characterization by TEM showed that solids with high FePMo content exhibited aggregation of FePMo in large particles. The as-prepared catalysts were tested in the synthesis of propylene carbonate (PC) from CO2 and propylene oxide (PO) in a solvent-free reaction and under mild conditions. Effects of various parameters, such as reaction temperature, reaction time, FePMo content on the support, and catalyst loading on the reaction, were investigated. It has been found that CNTs supported FePMo achieved 57.7% PO conversion and 99.0% PC selectivity, whereas unsupported FePMo led only to 8.5% conversion and 48.6% selectivity. The remarkable enhancement of the catalytic activity over the supported catalyst can be attributed mainly to the better dispersion and reactivity of the FePMo catalyst in the supported material.

GASIFICATION OF OIL PALM EMPTY FRUIT BUNCHES (OPEFB) BRIQUETTES FOR BIO-SYNGAS PRODUCTION

2016 ◽  
Vol 78 (8-3) ◽  
Author(s):  
Bemgba Bevan Nyakuma ◽  
Arshad Ahmad ◽  
Anwar Johari ◽  
Tuan A. T. Abdullah ◽  
Olagoke Oladokun ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Oil Palm ◽  
Empty Fruit Bunches ◽  
Syngas Production ◽  
Bed Temperature ◽  
Fluidized Bed Gasifier ◽  
Bed Agglomeration ◽  
Solid Biomass Fuel ◽  
Solid Biomass

Gasification of Oil Palm Empty Fruit Bunches (OPEFB) briquettes was investigated in an air blown 4.5 kW allothermal fluidized bed gasifier to examine the effects of bed temperature (600 – 800 °C) and equivalence ratio (λ = 0.25) on bio-syngas yield and composition. In addition, physicochemical and thermochemical characterization of the fuel properties of the OPEFB briquettes were also examined. The results demonstrate that pelletization improved the solid biomass fuel (SBF) properties of OPEFB including moisture content and higher heating value (HHV). The gasification of OPEFB briquettes produced bio-syngas comprising H2, CO, CO2, CH4 as well as solid biochar with a HHV higher than the original OPEFB briquettes. The highest yield of H2 was obtained at 600 °C while HHV of the bio-syngas was within the range 4 - 8 MJ/Nm3 for air gasification in fluidized bed gasifiers. In addition, agglomeration of bed materials did not occur during OPEFB briquettes gasification despite its high bed agglomeration potential (BAP). In conclusion, the gasification of OPEFB briquettes into bio-syngas and biochar is a practical route for bioenergy production in Malaysia

scholarly journals Insight into the Ex Situ Catalytic Pyrolysis of Biomass over Char Supported Metals Catalyst: Syngas Production and Tar Decomposition

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1397 ◽  
Author(s):  
Mian Hu ◽  
Baihui Cui ◽  
Bo Xiao ◽  
Shiyi Luo ◽  
Dabin Guo
Keyword(s):  
Active Sites ◽  
Catalytic Pyrolysis ◽  
Supported Catalyst ◽  
Ex Situ ◽  
Molar Ratio ◽  
Ni Catalyst ◽  
Nitrogenous Compounds ◽  
Syngas Production ◽  
Valence States ◽  
Pyrolysis Of Biomass

Ex situ catalytic pyrolysis of biomass using char-supported nanoparticles metals (Fe and Ni) catalyst for syngas production and tar decomposition was investigated. The characterizations of fresh Fe-Ni/char catalysts were determined by TGA, SEM–EDS, Brunauer–Emmett–Teller (BET), and XPS. The results indicated that nanoparticles metal substances (Fe and Ni) successfully impregnated into the char support and increased the thermal stability of Fe-Ni/char. Fe-Ni/char catalyst exhibited relatively superior catalytic performance, where the syngas yield and the molar ratio of H2/CO were 0.91 Nm3/kg biomass and 1.64, respectively. Moreover, the lowest tar yield (43.21 g/kg biomass) and the highest tar catalytic conversion efficiency (84.97 wt.%) were also obtained under the condition of Ni/char. Ultimate analysis and GC–MS were employed to analyze the characterization of tar, and the results indicated that the percentage of aromatic hydrocarbons appreciably increased with the significantly decrease in oxygenated compounds and nitrogenous compounds, especially in Fe-Ni/char catalyst, when compared with no catalyst pyrolysis. After catalytic pyrolysis, XPS was employed to investigate the surface valence states of the characteristic elements in the catalysts. The results indicated that the metallic oxides (MexOy) were reduced to metallic Me0 as active sites for tar catalytic pyrolysis. The main reactions pathway involved during ex situ catalytic pyrolysis of biomass based on char-supported catalyst was proposed. These findings indicate that char has the potential to be used as an efficient and low-cost catalyst toward biomass pyrolysis for syngas production and tar decomposition.

Syngas production employing nickel on alumina‐magnesia supported catalyst via dry methane reforming

2021 ◽  
Vol 52 (10) ◽  
pp. 1090-1100
Author(s):  
M. Yusuf ◽  
A.S. Farooqi ◽  
Y.X. Ying ◽  
L.K. Keong ◽  
M.A. Alam ◽  
...  
Keyword(s):  
Supported Catalyst ◽  
Methane Reforming ◽  
Syngas Production
Sign in / Sign up

Export Citation Format

Share Document