Production of CO-rich hydrogen gas from glycerol dry reforming over La-promoted Ni/Al2O3 catalyst

Siew, Kah Weng; Lee, Hua Chyn; Gimbun, Jolius; Cheng, Chin Kui

doi:10.1016/j.ijhydene.2014.02.059

Cited by 74 publications

(35 citation statements)

References 17 publications

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“…The 13 C-NMR spectrum of the product was also confirmed the structure of PAMS / PMMA diblock copolymer. The same results are obtained by Morejόn et al [68].…”

Section: Nmr Studysupporting

confidence: 89%

Methyl Methacrylate and Alpha-Methyl Styrene: New Strategy for Synthesis of Bloc Copolymers for Use in Potential Biomedical Applications Generated by an Ecologic Catalyst Called Maghnite (Algerian MMT)

Ayat

Belbachir

Rahmouni

2016

Bull. Chem. React. Eng. Catal.

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A new model for synthesis of the plastics, block copolymers were prepared from methyl methacrylate (MMA) and alpha-methyl styrene (α-MS) by cationic copolymerization in the presence of a new and efficient catalyst of "Maghnite-Na" at 0 °C in bulk. In this paper, the copolymerization of α-MS and MMA was induced in heterogeneous phase catalyzed by Maghnite-Na was investigated under suitable conditions. The "Maghnite-Na" is a montmorillonite sheet silicate clay, with exchanged sodium cations to produce Na-Montmorillonite (Na + -MMT) obtained from Tlemcen, Algeria, was investigated to remove heavy metal ion from wastewater as an efficient catalyst for cationic polymerization of many vinylic and heterocyclic monomers. The synthesized copolymer were characterized by Nuclear Magnetic Resonance (NMR-1 H, NMR-13 C), FT-IR spectroscopy, Differential Scanning Calorimetry (DSC), and Gel Permeation Chromatography (GPC) to elucidate structural characteristics and thermal properties of the resulting copolymers. The structure compositions of "MMT", "H + -MMT" and "Na + -MMT" have been developed. The effect of the MMA/α-MS molar ratio on the rate of copolymerization, the amount of catalyst, temperature and time of copolymerization on yield of copolymers was studied. The yield of copolymerization depends on the amount of Na + -MMT used and the reaction time. The kinetic studies indicated that the polymerization rate is first order with respect to monomer concentration. A possible mechanism of this cationic polymerization is discussed based on the results of the 1 H-NMR Spectroscopic analysis of these model reactions. A cationic mechanism for the reaction studies showed that monomer was inserted into the growing chains.

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“…The 13 C-NMR spectrum of the product was also confirmed the structure of PAMS / PMMA diblock copolymer. The same results are obtained by Morejόn et al [68].…”

Section: Nmr Studysupporting

confidence: 89%

Methyl Methacrylate and Alpha-Methyl Styrene: New Strategy for Synthesis of Bloc Copolymers for Use in Potential Biomedical Applications Generated by an Ecologic Catalyst Called Maghnite (Algerian MMT)

Ayat

Belbachir

Rahmouni

2016

Bull. Chem. React. Eng. Catal.

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“…It should be noted that this high glycerol total conversion has been observed by all researchers that have investigated this reaction (Cheng et al 2011;Ebshish et al 2012). GC analysis revealed that the gaseous products were H2, CO2, CO, and CH4, which agreed with previous work showing that these are the major gaseous products of glycerol steam reforming at 400 °C (Hirai et al 2005;Zhang et al 2007;Dou et al 2014;Siew et al 2014;Gallegos-Suárez et al 2015). Hydrogen yield and selectivity (%) are presented in Fig.…”

Section: Catalytic Activity and Selectivitysupporting

confidence: 86%

Effect of Active Metal Supported on SiO2 for Selective Hydrogen Production from the Glycerol Steam Reforming Reaction

Charisiou¹,

Papageridis²,

Siakavelas³

et al. 2016

BioResources

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The performance of nickel, cobalt, and copper supported on silica as catalysts was evaluated for the glycerol steam reforming (GSR) reaction. The samples were characterized by nitrogen-porosimetry according to Brunauer-Emmett-Teller (BET) method, X-ray diffraction (XRD), and inductively coupled plasma atomic emission spectroscopy (ICP-AES), while the deposited carbon on the catalytic surface was measured with a CHN-analyzer. Catalysts were studied in order to investigate the effect of the reaction temperature on (i) glycerol total conversion, (ii) glycerol conversion to gaseous products, (iii) hydrogen selectivity and yield, (iv) selectivity of gaseous products, and (v) selectivity of liquid products. The results showed that the Ni based on silica (Ni/Si) catalyst was more active and produced less liquid effluents than the catalysts that used an active metal such as Co or Cu. Moreover, the H2 yield from the Ni/Si catalyst was very close to the theoretical maximum predicted by thermodynamics, and the CO2 production was favoured in comparison to CO production, which is important for use in fuel cells.

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“…Methane yield is apparently lower than yield of hydrogen and carbon monoxide in the consecutive run. Methane is formed via dehydrogenation of glycerol, which also leads to the deposition of carbonaceous species [16]. Carbon monoxide yield is high for all the catalysts, circa 3 times the yield of hydrogen.…”

Section: Reaction Studymentioning

confidence: 99%

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

Harun

Gimbun

Azizan

et al. 2016

Bull. Chem. React. Eng. Catal.

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The carbon dioxide (CO2) 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 (SiO2), i.e. Ag-Ni/SiO2. 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 CO2 to glycerol molar ratio of 1, under atmospheric pressure. It was found that the main gaseous products are H₂, CO and CH4 with H₂:CO molar ratio < 1.0. From the reaction study, Ag(5)-Ni/SiO2 results in highest glycerol conversion and hydrogen yield, accounted for 32.6% and 27.4%, respectively.

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Production of CO-rich hydrogen gas from glycerol dry reforming over La-promoted Ni/Al2O3 catalyst

Cited by 74 publications

References 17 publications

Methyl Methacrylate and Alpha-Methyl Styrene: New Strategy for Synthesis of Bloc Copolymers for Use in Potential Biomedical Applications Generated by an Ecologic Catalyst Called Maghnite (Algerian MMT)

Methyl Methacrylate and Alpha-Methyl Styrene: New Strategy for Synthesis of Bloc Copolymers for Use in Potential Biomedical Applications Generated by an Ecologic Catalyst Called Maghnite (Algerian MMT)

Effect of Active Metal Supported on SiO2 for Selective Hydrogen Production from the Glycerol Steam Reforming Reaction

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

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