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( Moogi Surendar ),이인구 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
Bio-alcohols such as Methanol, Ethanol and Glycerol are considered as excellent feedstocks for producing hydrogen-rich gas by steam reforming (SR) process due to their renewable production from biomass. Hydrogen is a renewable energy carrier that can be converted to electricity and heat in the solid oxide fuel cell (SOFC). An integrated steam reforming and SOFC technology is seems to be promising to produce electricity to meet energy demand locally. But, the main impediment to integrated SR and SOFC technology is deactivation of Ni catalyst due to coke formation. One of the ways, to increase nickel catalyst life time is preparing the catalysts in the form structural precursors mainly hydrotalcites. Ni-Cu-Fe (NCF) based hydrotalcites with steam reforming and water gas shift bifunctional properties is expected to be active for producing hydrogen rich gas from steam reforming of bio-alcohols.
1P-349 Comparison of aqueous gasification of methanol over Ni-Y/AC in steam and supercritical water
이인구,( Surendar Moogi ),최혜영 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
Methanol is considered a good hydrogen carrier because it is relatively cheap and convenient to transport, store and use. Furthermore methanol can be produced from lignocellulosic biomass via gasification followed by catalytic synthesis. In this work, methanol gasification characteristics were compared over Ni-Y/AC catalyst in atmospheric steam and supercritical water at 250 bar. The effect of major parameters such as temperature, W/M molar ratio and WHSV on gas production rate and gas composition were examined in both aqueous phases. Steam gasification of methanol showed little sensitivity to catalyst bed temperature of 450~650℃, while supercritical water gasification (SCWG) was significantly affected by the temperature with observation of an abrupt increase above 580℃. Gas composition was also affected by W/M ratio with higher hydrogen content at higher W/M ratio.
Abid Farooq,Surendar Moogi,장성호,KANNAPU HARI PRASAD REDDY,Soheil Valizadeh,Ashfaq Ahmed,Su Shiung Lam,박영권 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.94 No.-
Steam-gasification of linear low-density polyethylene (LLDPE) waste to hydrogen-rich gas has beenstudied systematically over nickel (10 wt.%) loaded on a variety of supports (Al2O3, CeO2, and CeO2-ZrO2)synthesized using a novel solvent deficient method (SDM). The hydrogen selectivity order of the catalystswas reported as Ni/CeO2-ZrO2>Ni/CeO2>Ni/Al2O3. The highest catalytic H2 selectivity of the Ni/CeO2-ZrO2 catalyst was reported to be76 vol.%, and was attributed to the smaller nickel crystals that werefinely dispersed on the support, and to formation of Ce1-xZrxO2-d solid solutions. The Ce1-xZrxO2-d solidsolution in the Ni/CeO2-ZrO2 catalyst was observed to be bi-functional, thus reflecting the acceleration ofthe water gas shift and the oxidation of carbon to CO and CO2. The better resistance of the Ni/CeO2-ZrO2catalyst towards coke deposition also indicated its potential for commercial-scale applications for thesteam gasification of plastics. Therefore, this research provides an advanced route to recycle LLDPE plasticwaste into hydrogen fuel, which presents both economical and environmental benefits.
1P-350 Effect of support of Mg-Ni-Mo catalyst on upgrading of bio-tar in supercritical ethanol
이진혁,이인구,( Surendar Moogi ),최혜영 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
Lignocellulosic biomass is widely considered an alternative to petroleum fuels due to their low nitrogen and sulfur content and CO<sub>2</sub> balance of almost zero. Among various conversion technologies of lignocellulosic biomass, pyrolysis is one of the most promising thermal conversion in the absence of O<sub>2</sub>. However, pyrolysis oil from pyrolysis thermal conversion of lignocellulosic biomass results in high acidity, water content, low heating values, and high viscosity. Therefore, the research of new methods for the upgrade of pyrolysis oil is a top priority. In this study, catalytic upgrading of wood sawdust pyrolysis oil in supercritical ethanol was performed. The various types of supports including activated charcoal (AC), KOH-treatment of AC, SBA-15, and KIT-6) with Mg-Ni-Mo active metals were screened to investigate their effects on the product yields and properties, i.e., elemental composition, heating value, water content and acidity.
KANNAPU HARI PRASAD REDDY,Jyothi Yadagiri,Surendar Moogi,Eilhann E.Kwon,Su Shiung Lam,박영권 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.94 No.-
In this study, conversion of n-propanal to produce 2-methyl-2-pentenal (C6 compound, a fuel rangeprecursor) was carried out using AMW-SBA-15 catalyst synthesized from activated marble waste (AMW)consisting mainly of Ca2+ and Mg2+ ions. AMW-SBA-15 catalysts with different weight ratios of AMW/Si(6, 12, and 18 wt. %) were prepared using single step sol-gel method. The catalytic activities wereexamined using afixed bed continuous reactor over temperature ranging from 350 425 C underatmospheric pressure. The 12AMW-SBA-15 catalysts showed superior catalytic performance with npropanalconversion of 75 % and C-6 compound selectivity of 81 % at 375 C without the need ofdeactivation for 12 h. To elucidate the structure-activity relationship, all catalysts were characterizedusing a variety of techniques. The superior performance of 12AMW-SBA-15 was ascribed to the highsurface area and smaller particle size as well as the high hydrophobicity, which controlled the hydrationof Ca2+/Mg2+ ions during the reaction.