The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Amandine Cabiac - One of the best experts on this subject based on the ideXlab platform.
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catalytic conversion of cellulose to c2 c3 glycols by dual association of a homogeneous Metallic Salt and a perovskite supported platinum catalyst
Catalysis Science & Technology, 2016Co-Authors: Etienne Girard, Damien Delcroix, Amandine CabiacAbstract:A novel catalytic system based on the combination of a homogeneous Metallic Salt and a platinum catalyst supported on a zirconium-based oxide was explored for the selective conversion of cellulose to C2–C3 glycols. Parameters such as the nature of the homogeneous catalyst, support effects and operating conditions were systematically varied to evaluate the potential of this dual catalytic system. Sharp analysis of reaction pathways led us to identify an optimal combination of cerium chloride and a barium zirconate-based platinum catalyst for the production of ethylene glycol and propylene glycol exhibiting substantial selectivities (>40%). The recyclability and the possible deactivation mechanisms of the catalytic system were ultimately investigated.
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Catalytic conversion of cellulose to C2–C3 glycols by dual association of a homogeneous Metallic Salt and a perovskite-supported platinum catalyst†
Catalysis science and Technology, 2016Co-Authors: Etienne Girard, Damien Delcroix, Amandine CabiacAbstract:A novel catalytic system based on the combination of a homogeneous Metallic Salt and a platinum catalyst supported on a zirconium-based oxide was explored for the selective conversion of cellulose to C2–C3 glycols. Parameters such as the nature of the homogeneous catalyst, support effects and operating conditions were systematically varied to evaluate the potential of this dual catalytic system. Sharp analysis of reaction pathways led us to identify an optimal combination of cerium chloride and a barium zirconate-based platinum catalyst for the production of ethylene glycol and propylene glycol exhibiting substantial selectivities (>40%). The recyclability and the possible deactivation mechanisms of the catalytic system were ultimately investigated.
Young Chang Nho - One of the best experts on this subject based on the ideXlab platform.
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Radiation‐induced graft polymerization of methyl methacrylate onto ultrahigh molecular weight polyethylene in the presence of a Metallic Salt and acid
Journal of Applied Polymer Science, 2002Co-Authors: Oh Hyun Kwon, Young Chang NhoAbstract:An attempt was made to graft methyl methacrylate (MMA) onto ultrahigh molecular weight polyethylene preirradiated in air in the presence of a Metallic Salt and acid. The grafting yield increased with increasing monomer concentration. The maximum grafting yield was around a 60 vol % monomer concentration. The results showed that the inclusion of FeSO4 · 7H2O and sulfuric acid in MMA grafting solutions was extremely beneficial and led to a most unusual synergistic effect in the radiation grafting, much more than with only a Metallic Salt. However, CuSO4 · 5H2O led to a detrimental effect. It is believed that sulfuric acid accelerates the decomposition of hydroperoxides in the presence of Metallic Salts such as Fe2+, inhibiting homopolymerization. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2348–2356, 2002
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Antibacterial activity of sulfonated styrene-grafted polypropylene fabric and its Metallic Salt
Journal of Macromolecular Science Part A, 1999Co-Authors: Young Chang Nho, Jong Shin Park, J. H. Jin, O. H. KwonAbstract:Antibacterial activities of sulfonated styrene-grafted polypropylene fabric and its Metallic complexes against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa were evaluated by a viable cell counting method. After styrene was grafted to polypropylene fabric, a sulfonation reaction was carried out. Various metals were introduced to the sulfonated styrene-grafted polypropylene fabric to evaluate their antibacterial activities. Ag complex of sulfonated styrene-grafted polypropylene fabric (3.95 mM SO3H/g) had a strong biocidal effect to kill all bacteria within 30 minutes. From the antibacterial activity of the Metallic Salts of sulfonated-grafted PP fabric, it was found that Ag complexed fabric had strong biocidal effects for all bac-teria and the other metal complexed fabrics had different antibacterial activity depending on each bacterium.
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Graft polymerization of methyl methacrylate onto radiation‐peroxidized ultrahigh molecular weight polyethylene in the presence of Metallic Salt and acid
Journal of Applied Polymer Science, 1999Co-Authors: Oh Hyun Kwon, Young Chang Nho, Joon-ha Jin, Myong-goo Lee, Yun-ho LeeAbstract:Using a radiation peroxide grafting technique, a ultrahigh molecular weight polyethylene (UHMWPE) stored at room temperature for 10 days after irradiation in air was graft copolymerized with methyl methacrylate (MMA) in the presence of Metallic Salt and acid. The MMA-grafted UHMWPE samples were analyzed by measuring Fourier transform infrared spectroscopy in attenuated total reflectance (FTIR-ATR) and by electron spectroscopy for chemical analysis (ESCA). The 1,1-diphenyl-2-picrylhydrzyl (DPPH) technique was utilized to evaluate the concentration of peroxide formed in the peroxidized UHMWPE samples by counting the quantity of DPPH consumed from the reaction of peroxide radicals with DPPH. It was shown that the inclusion of an FeSO 4 .7H 2 O and sulfuric acid in MMA grafting solutions was extremely beneficial and led to a most unusual synergistic effect in the radiation-peroxidized grafting.
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graft polymerization of methyl methacrylate onto radiation peroxidized ultrahigh molecular weight polyethylene in the presence of Metallic Salt and acid
Journal of Applied Polymer Science, 1999Co-Authors: Oh Hyun Kwon, Young Chang Nho, Joon-ha Jin, Myong-goo Lee, Yun-ho LeeAbstract:Using a radiation peroxide grafting technique, a ultrahigh molecular weight polyethylene (UHMWPE) stored at room temperature for 10 days after irradiation in air was graft copolymerized with methyl methacrylate (MMA) in the presence of Metallic Salt and acid. The MMA-grafted UHMWPE samples were analyzed by measuring Fourier transform infrared spectroscopy in attenuated total reflectance (FTIR-ATR) and by electron spectroscopy for chemical analysis (ESCA). The 1,1-diphenyl-2-picrylhydrzyl (DPPH) technique was utilized to evaluate the concentration of peroxide formed in the peroxidized UHMWPE samples by counting the quantity of DPPH consumed from the reaction of peroxide radicals with DPPH. It was shown that the inclusion of an FeSO 4 .7H 2 O and sulfuric acid in MMA grafting solutions was extremely beneficial and led to a most unusual synergistic effect in the radiation-peroxidized grafting.
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Antibacterial activities of acrylic acid‐grafted polypropylene fabric and its Metallic Salt
Journal of Applied Polymer Science, 1998Co-Authors: Jong Shin Park, Young Chang Nho, Jae Hong Kim, Oh Hyun KwonAbstract:Acrylic acid (AAc) was grafted onto polypropylene (PP) fabric by a preirradiation method using a 60Co gamma ray. The effects of the absorbed dose, the reaction temperature, reaction time, storage time, as well as the addition effect of ferrous ion and sulphuric acid on the degree of grafting, were determined. It was shown that the synergistic effect of a strong acid with ferrous sulfate can increase the grafting yield. Antibacterial activities on Metallic complexes of acrylic acid-grafted polypropylene (AAc-g-PP) fabric were evaluated by a viable cell counting method. An Ag complexed fabric had strong biocidal effect for all bacteria. Fe, Cu, and Zn complexed fabrics had different antibacterial activities depending on each bacterium. However, AAc-g-PP fabric and Ni-complexed fabric did not have bactericidal effect. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2213–2220, 1998
Oh Hyun Kwon - One of the best experts on this subject based on the ideXlab platform.
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Radiation‐induced graft polymerization of methyl methacrylate onto ultrahigh molecular weight polyethylene in the presence of a Metallic Salt and acid
Journal of Applied Polymer Science, 2002Co-Authors: Oh Hyun Kwon, Young Chang NhoAbstract:An attempt was made to graft methyl methacrylate (MMA) onto ultrahigh molecular weight polyethylene preirradiated in air in the presence of a Metallic Salt and acid. The grafting yield increased with increasing monomer concentration. The maximum grafting yield was around a 60 vol % monomer concentration. The results showed that the inclusion of FeSO4 · 7H2O and sulfuric acid in MMA grafting solutions was extremely beneficial and led to a most unusual synergistic effect in the radiation grafting, much more than with only a Metallic Salt. However, CuSO4 · 5H2O led to a detrimental effect. It is believed that sulfuric acid accelerates the decomposition of hydroperoxides in the presence of Metallic Salts such as Fe2+, inhibiting homopolymerization. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2348–2356, 2002
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Graft polymerization of methyl methacrylate onto radiation‐peroxidized ultrahigh molecular weight polyethylene in the presence of Metallic Salt and acid
Journal of Applied Polymer Science, 1999Co-Authors: Oh Hyun Kwon, Young Chang Nho, Joon-ha Jin, Myong-goo Lee, Yun-ho LeeAbstract:Using a radiation peroxide grafting technique, a ultrahigh molecular weight polyethylene (UHMWPE) stored at room temperature for 10 days after irradiation in air was graft copolymerized with methyl methacrylate (MMA) in the presence of Metallic Salt and acid. The MMA-grafted UHMWPE samples were analyzed by measuring Fourier transform infrared spectroscopy in attenuated total reflectance (FTIR-ATR) and by electron spectroscopy for chemical analysis (ESCA). The 1,1-diphenyl-2-picrylhydrzyl (DPPH) technique was utilized to evaluate the concentration of peroxide formed in the peroxidized UHMWPE samples by counting the quantity of DPPH consumed from the reaction of peroxide radicals with DPPH. It was shown that the inclusion of an FeSO 4 .7H 2 O and sulfuric acid in MMA grafting solutions was extremely beneficial and led to a most unusual synergistic effect in the radiation-peroxidized grafting.
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graft polymerization of methyl methacrylate onto radiation peroxidized ultrahigh molecular weight polyethylene in the presence of Metallic Salt and acid
Journal of Applied Polymer Science, 1999Co-Authors: Oh Hyun Kwon, Young Chang Nho, Joon-ha Jin, Myong-goo Lee, Yun-ho LeeAbstract:Using a radiation peroxide grafting technique, a ultrahigh molecular weight polyethylene (UHMWPE) stored at room temperature for 10 days after irradiation in air was graft copolymerized with methyl methacrylate (MMA) in the presence of Metallic Salt and acid. The MMA-grafted UHMWPE samples were analyzed by measuring Fourier transform infrared spectroscopy in attenuated total reflectance (FTIR-ATR) and by electron spectroscopy for chemical analysis (ESCA). The 1,1-diphenyl-2-picrylhydrzyl (DPPH) technique was utilized to evaluate the concentration of peroxide formed in the peroxidized UHMWPE samples by counting the quantity of DPPH consumed from the reaction of peroxide radicals with DPPH. It was shown that the inclusion of an FeSO 4 .7H 2 O and sulfuric acid in MMA grafting solutions was extremely beneficial and led to a most unusual synergistic effect in the radiation-peroxidized grafting.
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Antibacterial activities of acrylic acid‐grafted polypropylene fabric and its Metallic Salt
Journal of Applied Polymer Science, 1998Co-Authors: Jong Shin Park, Young Chang Nho, Jae Hong Kim, Oh Hyun KwonAbstract:Acrylic acid (AAc) was grafted onto polypropylene (PP) fabric by a preirradiation method using a 60Co gamma ray. The effects of the absorbed dose, the reaction temperature, reaction time, storage time, as well as the addition effect of ferrous ion and sulphuric acid on the degree of grafting, were determined. It was shown that the synergistic effect of a strong acid with ferrous sulfate can increase the grafting yield. Antibacterial activities on Metallic complexes of acrylic acid-grafted polypropylene (AAc-g-PP) fabric were evaluated by a viable cell counting method. An Ag complexed fabric had strong biocidal effect for all bacteria. Fe, Cu, and Zn complexed fabrics had different antibacterial activities depending on each bacterium. However, AAc-g-PP fabric and Ni-complexed fabric did not have bactericidal effect. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2213–2220, 1998
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antibacterial activities of acrylic acid grafted polypropylene fabric and its Metallic Salt
Journal of Applied Polymer Science, 1998Co-Authors: Jong Shin Park, Young Chang Nho, Jae Hong Kim, Oh Hyun KwonAbstract:Acrylic acid (AAc) was grafted onto polypropylene (PP) fabric by a preirradiation method using a 60Co gamma ray. The effects of the absorbed dose, the reaction temperature, reaction time, storage time, as well as the addition effect of ferrous ion and sulphuric acid on the degree of grafting, were determined. It was shown that the synergistic effect of a strong acid with ferrous sulfate can increase the grafting yield. Antibacterial activities on Metallic complexes of acrylic acid-grafted polypropylene (AAc-g-PP) fabric were evaluated by a viable cell counting method. An Ag complexed fabric had strong biocidal effect for all bacteria. Fe, Cu, and Zn complexed fabrics had different antibacterial activities depending on each bacterium. However, AAc-g-PP fabric and Ni-complexed fabric did not have bactericidal effect. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2213–2220, 1998
Etienne Girard - One of the best experts on this subject based on the ideXlab platform.
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catalytic conversion of cellulose to c2 c3 glycols by dual association of a homogeneous Metallic Salt and a perovskite supported platinum catalyst
Catalysis Science & Technology, 2016Co-Authors: Etienne Girard, Damien Delcroix, Amandine CabiacAbstract:A novel catalytic system based on the combination of a homogeneous Metallic Salt and a platinum catalyst supported on a zirconium-based oxide was explored for the selective conversion of cellulose to C2–C3 glycols. Parameters such as the nature of the homogeneous catalyst, support effects and operating conditions were systematically varied to evaluate the potential of this dual catalytic system. Sharp analysis of reaction pathways led us to identify an optimal combination of cerium chloride and a barium zirconate-based platinum catalyst for the production of ethylene glycol and propylene glycol exhibiting substantial selectivities (>40%). The recyclability and the possible deactivation mechanisms of the catalytic system were ultimately investigated.
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Catalytic conversion of cellulose to C2–C3 glycols by dual association of a homogeneous Metallic Salt and a perovskite-supported platinum catalyst†
Catalysis science and Technology, 2016Co-Authors: Etienne Girard, Damien Delcroix, Amandine CabiacAbstract:A novel catalytic system based on the combination of a homogeneous Metallic Salt and a platinum catalyst supported on a zirconium-based oxide was explored for the selective conversion of cellulose to C2–C3 glycols. Parameters such as the nature of the homogeneous catalyst, support effects and operating conditions were systematically varied to evaluate the potential of this dual catalytic system. Sharp analysis of reaction pathways led us to identify an optimal combination of cerium chloride and a barium zirconate-based platinum catalyst for the production of ethylene glycol and propylene glycol exhibiting substantial selectivities (>40%). The recyclability and the possible deactivation mechanisms of the catalytic system were ultimately investigated.
Damien Delcroix - One of the best experts on this subject based on the ideXlab platform.
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catalytic conversion of cellulose to c2 c3 glycols by dual association of a homogeneous Metallic Salt and a perovskite supported platinum catalyst
Catalysis Science & Technology, 2016Co-Authors: Etienne Girard, Damien Delcroix, Amandine CabiacAbstract:A novel catalytic system based on the combination of a homogeneous Metallic Salt and a platinum catalyst supported on a zirconium-based oxide was explored for the selective conversion of cellulose to C2–C3 glycols. Parameters such as the nature of the homogeneous catalyst, support effects and operating conditions were systematically varied to evaluate the potential of this dual catalytic system. Sharp analysis of reaction pathways led us to identify an optimal combination of cerium chloride and a barium zirconate-based platinum catalyst for the production of ethylene glycol and propylene glycol exhibiting substantial selectivities (>40%). The recyclability and the possible deactivation mechanisms of the catalytic system were ultimately investigated.
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Catalytic conversion of cellulose to C2–C3 glycols by dual association of a homogeneous Metallic Salt and a perovskite-supported platinum catalyst†
Catalysis science and Technology, 2016Co-Authors: Etienne Girard, Damien Delcroix, Amandine CabiacAbstract:A novel catalytic system based on the combination of a homogeneous Metallic Salt and a platinum catalyst supported on a zirconium-based oxide was explored for the selective conversion of cellulose to C2–C3 glycols. Parameters such as the nature of the homogeneous catalyst, support effects and operating conditions were systematically varied to evaluate the potential of this dual catalytic system. Sharp analysis of reaction pathways led us to identify an optimal combination of cerium chloride and a barium zirconate-based platinum catalyst for the production of ethylene glycol and propylene glycol exhibiting substantial selectivities (>40%). The recyclability and the possible deactivation mechanisms of the catalytic system were ultimately investigated.