Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst

Park, Jung Eun; Yim, Sung-Dae; Kim, Chang Soo; Park, Eun Duck

doi:10.1016/j.ijhydene.2014.05.130

Cited by 64 publications

(23 citation statements)

References 49 publications

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“…However, they are not suitable for tar removal due to their rapid deactivation by sulfur, chlorine, and alkali metals that may be present in the product gases and/or coke formation on the catalyst surface [12,13] . Recently, low-cost Cu catalysts have been attracted great interest in heterogeneous catalytic processes, including water gas shift (WGS) reaction, steam reforming and hydrogenolysis [14][15][16][17] . Its activity is found to depend on various factors, including the nature of support, preparation method and operation conditions.…”

Section: Introductionmentioning

confidence: 99%

Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Kaewpanha

Karnjanakom

Guan

et al. 2017

Journal of Energy Chemistry

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Section: Introductionmentioning

confidence: 99%

Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Kaewpanha

Karnjanakom

Guan

et al. 2017

Journal of Energy Chemistry

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“…For the SRM at 250 C, among the three methods, a sample prepared by homogeneous precipitation showed highest methanol conversion of 69.6%, but with significantly higher CO yield of 27.1%. Park et al [15] investigated the effect of ZrO 2 addition at different loading to the conventional Cu/ ZnO/Al 2 O 3 catalyst on its SRM activity and thermal stability. While the reducibility of CuO and subsequently the activity of catalyst increased, the thermal stability was observed to decrease with increase in ZrO 2 loading [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Park et al [15] investigated the effect of ZrO 2 addition at different loading to the conventional Cu/ ZnO/Al 2 O 3 catalyst on its SRM activity and thermal stability. While the reducibility of CuO and subsequently the activity of catalyst increased, the thermal stability was observed to decrease with increase in ZrO 2 loading [15,16]. The catalyst with Cu:Zn:Al:Zr molar ratio of 3:3:2:2 showed the highest and most stable activity for SRM at 300 C. Matsumura [17] reported that the addition of indium and yttrium oxide to the Cu/ZnO/ZrO 2 catalyst increase the catalyst stability by suppressing the aggregation and sintering of Cu particles during SRM.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of stable Cu-MCM-41 nanocatalysts for H2 production with high selectivity via steam reforming of methanol

Deshmane

Abrokwah

Kuila

2015

International Journal of Hydrogen Energy

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Available online xxxKeywords: Steam reforming Cu-MCM-41 Metal loading One-pot synthesis Catalyst deactivation N 2 O chemisorption a b s t r a c t High surface area MCM-41 containing copper catalysts (with different loading from 5 to 20 wt%) were synthesized using one-pot procedure for steam reforming of methanol (SRM) studies. A variety of techniques including BET, XRD, TGA-DSC, TEM, EDX, ICP-OES, H 2 -TPR, N 2 O chemisorption and EPR were used to characterize the physical and chemical properties of catalysts. Structural characterization by means of XRD and BET revealed that %Cu loading has a strong influence on the ordered structure and the textural properties of the Cu-MCM-41 catalysts. The BET surface area of MCM-41 decreased from 1039 to 662 m 2 /g with increase in Cu loading from 0 to 15 wt% and then dropped to 314 m 2 /g with the loss of ordered structure at 20 wt% loading. The chemical composition analyses of catalysts using ICP-OES and EDX showed that the intended amount of copper was successfully retained in MCM-41 during one pot synthesis. Steam reforming of methanol for hydrogen production was carried out in a fixed bed reactor at atmospheric pressure in the temperature range of 200e350 C. The effect of %Cu loading, reaction temperature, CH 3 OH/H 2 O molar ratio, reactants space velocity, catalyst time on-stream on the catalytic activity and selectivity were investigated. The Cu-MCM-41 samples showed excellent catalytic performance for the SRM reactions. The best results were obtained with 15%Cu-MCM-41 which showed 89% methanol conversion, 100% H 2 selectivity and CO selectivity of 0.8% at 300 C and 2838 h À1 GHSV. However, methanol conversion decreased to about 77% when the loading of Cu was increased to 20 wt%. This can be attributed to more than 50% decrease in catalyst surface area leading to decrease in Cu-dispersion. The catalyst with 15 wt% loading showed strong resistance to deactivation and maintained consistent performance over a time onstream for 48 h, indicating that the use of high surface area MCM-41 support significantly enhanced the stability of Cu-based catalyst.ScienceDirect j o urn al h om epa ge: www.elsev ier.com/locate/he i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y x x x ( 2 0 1 5 ) 1 e1 4 http://dx.Please cite this article in press as: Deshmane VG, et al., Synthesis of stable Cu-MCM-41 nanocatalysts for H 2 production with high selectivity via steam reforming of methanol, International Journal of Hydrogen Energy (2015), http://dx.

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“…In order to use them at the higher temperature, the materials are modified. Until now, the kinetic rate expressions of methanol reforming were investigated over various catalyst types such as Cu/ZnO/Al2O3 [33][34][35], Cu/ZnO2/CeO2 [36] and CuX2O4 (X=Fe, Mn, Al, La) [37].…”

Section: Reforming Of Methanolmentioning

confidence: 99%

Configuration Development of Autothermal Solid Oxide Fuel Cell: A Review

Dokmaingam

2015

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Solid Oxide Fuel Cell (SOFC) is typically operated at high temperature. Both electricity and heat are generated during operation. Therefore, SOFC can be efficiently designed to integrate the endothermic reformer with the cell for optimizing heat utilization, as called autothermal operation. However, the mismatch between rate of exothermic electrochemical reaction and endothermic reforming reaction is easily resulted in material cracking of that integrated structure. In order to overcome the thermal mismatch limitation, various approaches for autothermal SOFC configurations have been widely developed; these configurations can be classified into 2 main groups including direct internal reforming (as called DIR-SOFC) and indirect internal reforming (as called IIR-SOFC) operations. This review focuses on the technological progress of these various configurations. In detail, the thermal behavior inside each autothermal SOFC configuration is explored. The effect of different primary hydrocarbon fuels on temperature distribution in the autothermal SOFC structures is also indicted. In addition, the advantage and disadvantage on thermal stress reduction of each configuration are also discussed. The historical of this development would advantage for further system modification and scale up to desired power output

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Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst

Cited by 64 publications

References 49 publications

Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Removal of biomass tar by steam reforming over calcined scallop shell supported Cu catalysts

Synthesis of stable Cu-MCM-41 nanocatalysts for H2 production with high selectivity via steam reforming of methanol

Configuration Development of Autothermal Solid Oxide Fuel Cell: A Review

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