Experimental study of Ni/MgO catalyst in carbon dioxide reforming of toluene, a model compound of tar from biomass gasification

Kong, Meng; Yang, Qi; Fei, Jinhua; Zheng, Xiaoming

doi:10.1016/j.ijhydene.2012.06.108

Cited by 58 publications

(27 citation statements)

References 45 publications

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“…The produced CO 2 may react with toluene according to dry reforming of toluene (reaction 20). However, literature reports showed that toluene conversion was quite low at 650°C for ideal dry reforming of toluene (CO 2 /C 7 H 8 feed ratio of 7). Hydrodealkylation (reaction 21) also possibly occurs simultaneously to produce CH 4 .…”

Section: Resultsmentioning

confidence: 99%

Mechanism and kinetic modeling for steam reforming of toluene on La_0.8Sr_0.2Ni_0.8Fe_0.2O₃ catalyst

Oemar

Hidajat

et al. 2014

AIChE Journal

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Reaction mechanism for steam reforming of toluene is proposed for La0.8Sr0.2Ni0.8Fe0.2O3 perovskite catalyst. The proposed mechanism was derived from various characterization results such as temperature‐programmed desorption (TPD) and temperature‐programmed surface reaction (TPSR) water, TPSR toluene, TPD O2 and in situ DRIFT of toluene decomposition, and steam reforming of toluene. Five kinetic models were developed based on the proposed dual‐site reaction mechanism using Langmuir–Hinshelwood approach. Subsequently, the parameters of the kinetic models were estimated by nonlinear least square regression. A good agreement was obtained between experimental and model predicted results for the rate determining step based on reaction between adsorbed aldehyde and adsorbed oxygen. The adsorbed aldehyde species is produced from the reaction between adsorbed C2H2 or CH2 and adsorbed oxygen while the adsorbed oxygen species can come from the oxygen from water activation, lattice oxygen species, and/or the redox property of some metals such as Fe. This shows that the adsorbed oxygen species plays important role in this reaction. © 2014 American Institute of Chemical Engineers AIChE J 60: 4190–4198, 2014

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Section: Resultsmentioning

confidence: 99%

Mechanism and kinetic modeling for steam reforming of toluene on La_0.8Sr_0.2Ni_0.8Fe_0.2O₃ catalyst

Oemar

Hidajat

et al. 2014

AIChE Journal

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“…A comparison of one-ring and poly-ring hydrocarbons has been published [18]. Furthermore, the conversion of toluene has been investigated [19][20][21]. The typical gaseous products that form during biomass steam gasification are carbon monoxide (CO), hydrogen (H 2 ), methane (CH 4 ), and carbon dioxide (CO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Influence of coated olivine on the conversion of intermediate products from decomposition of biomass tars during gasification

Kuba

Kirnbauer

Hofbauer

2016

Biomass Conv. Bioref.

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Steam gasification of solid biomass in dual fluidized bed systems is a suitable technology for the production of chemicals, fuels for transportation, electricity, and district heating. Interaction between biomass ash and bed material leads to the development of Ca-rich bed particle layers. Furthermore, incomplete decomposition of biomass leads to the formation of tar components; among these are stable intermediate products such as 1H-indene and stable gaseous hydrocarbons such as methane. In this work, the influence of bed particle layers on the conversion of intermediate products such as 1H-indene and methane via steam reforming was investigated by conducting experiments in a lab-scale test rig. Satisfying conversion of 1H-indene into gaseous molecules (e.g., CO, CO 2 , H 2 ) was achieved with used, layered olivine, whereas fresh olivine showed significantly poorer performance. Since steam reforming was connected to the watergas-shift reaction for the tested hydrocarbons, investigations regarding carbon monoxide conversion in the presence of steam were conducted as well. Furthermore, a comparison of the influence of fresh and used bed material concerning the conversion of methane is presented, showing that methane is not affected by the bed material, independent of the presence of particle layers.

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“…In general, Ni/MgO has been prepared using two simple approaches, the so-called stepwise sequential impregnation and one-step coimpregnation approaches. For example, Ni/MgO catalyst has been prepared by multiple successive impregnations to produce a catalyst system with 1 and 5 wt% of Ni loading (Kong et al 2012). The catalyst was prepared by soaking of the MgO support in aqueous solution of nickel nitrate and corresponding nitrates of the metals used as a promoter, followed by drying, calcination, and reduction.…”

Section: Ni/mgo Heterogeneous Catalystmentioning

confidence: 99%

Magnesium oxide as a heterogeneous catalyst support

Julkapli

Bagheri

2016

Reviews in Inorganic Chemistry

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AbstractResearchers normally consider MgO as a promising high-surface-area heterogeneous catalyst support, additive, and promoter for many kinds of chemical reactions due to its certain properties, including stoichiometry and composition, cation valence, redox properties, acid-base character, and crystal and electronic structure. The presence of MgO as a support catalyst also modifies the electronic state of the overall catalytic performance by electron transfer between the native catalyst and MgO as support. The influence is clarified by alteration of acid-base properties of the catalyst-supported MgO. Meanwhile, the method, chemical composition, and condition in the preparation of MgO are the important factors affecting its surface and catalytic properties. Therefore, MgO with a high surface area and nanocrystalline structure has encouraging applications for some reactions, including as dry reforming, dehydrohalogenation, oxidative dehydrogenation of butane, nonoxidative dehydrogenation of ethylbenzene, decomposition of CCl

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Experimental study of Ni/MgO catalyst in carbon dioxide reforming of toluene, a model compound of tar from biomass gasification

Cited by 58 publications

References 45 publications

Mechanism and kinetic modeling for steam reforming of toluene on La_0.8Sr_0.2Ni_0.8Fe_0.2O₃ catalyst

Mechanism and kinetic modeling for steam reforming of toluene on La_0.8Sr_0.2Ni_0.8Fe_0.2O₃ catalyst

Influence of coated olivine on the conversion of intermediate products from decomposition of biomass tars during gasification

Magnesium oxide as a heterogeneous catalyst support

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Experimental study of Ni/MgO catalyst in carbon dioxide reforming of toluene, a model compound of tar from biomass gasification

Cited by 58 publications

References 45 publications

Mechanism and kinetic modeling for steam reforming of toluene on La0.8Sr0.2Ni0.8Fe0.2O3 catalyst

Mechanism and kinetic modeling for steam reforming of toluene on La0.8Sr0.2Ni0.8Fe0.2O3 catalyst

Influence of coated olivine on the conversion of intermediate products from decomposition of biomass tars during gasification

Magnesium oxide as a heterogeneous catalyst support

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Mechanism and kinetic modeling for steam reforming of toluene on La_0.8Sr_0.2Ni_0.8Fe_0.2O₃ catalyst

Mechanism and kinetic modeling for steam reforming of toluene on La_0.8Sr_0.2Ni_0.8Fe_0.2O₃ catalyst