Fe-rich biomass derived char for microwave-assisted methane reforming with carbon dioxide

Li, Longzhi; Yan, Keshuo; Chen, Jian; Feng, Tai; Wang, Fumao; Wang, Jianwei; Song, Zhanlong; Ma, Chunyuan

doi:10.1016/j.scitotenv.2018.12.097

Cited by 48 publications

(15 citation statements)

References 37 publications

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“…Gangurde et al (2018) also reported analogous findings and proposed that an increase in CO 2 gaseous reactant in feed gas could lead to an acceleration in deposited carbon gasification and thus facilitating the regeneration of active sites and improving the reactant conversions (Gangurde et al 2018). Li et al (2019) have conducted microwave-assisted DRM over Fe-rich biomass-derived char under different feedstock ratios to determine the correlation between the feed composition and Fe content presented on catalysts. As CH 4 /CO 2 ratio increased, an observed decline in catalytic activity implying the predominance of carbon deposition originated from CH 4 decomposition at CH 4 -rich environment.…”

Section: Reactant Partial Pressurementioning

confidence: 77%

“…Actually, carbonaceous materials could be used as the active catalysts for the dry reforming of methane reaction (Li et al 2019). However, as indicated in the following section, they are definitely consumed by CO 2 gasification that takes place during the reforming process (Fidalgo and Menéndez 2013).…”

Section: Carbon-based Susceptormentioning

confidence: 99%

“…In comparison with original bio-char, the embedment of K and Na improved the conversion of CO 2 by 10.8 and 12.1%, respectively, while the embedment of Mg and Ca unexpectedly promote the rate of CH 4 decomposition. Considering the economic feasibility, applicability and availability, Li et al (2019) continuously study the microwave-assisted DRM process over the Fe-rich biomass-derived chars. They found that Fe addition appreciably enhance the activity of methane reforming compared to original char.…”

Section: Mixing Metal Catalysts With Microwave-absorbing Materialsmentioning

confidence: 99%

“…With the employment of microwave heating, the reactant conversions achieved were reportedly greater than thermodynamically predicted equilibrium values reported in literature. Hence, Hamzehlouia et al (2018) proposed that the microwave selective heating mechanism not only enhanced the reforming performance via sustainably maintain the temperature gradient on catalyst surface (Li et al 2019) Fig. 19 a Reactant conversion and b product selectivity at temperature ranging from 650 to 900 °C.…”

Section: Reaction Temperaturementioning

confidence: 99%

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Microwave-assisted dry reforming of methane for syngas production: a review

Pham

Ro²,

Chen

et al. 2020

Environ Chem Lett

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Abatement of emissions of greenhouse gases such as methane and carbon dioxide is crucial to reduce global warming. For that, dry reforming of methane allows to convert methane and carbon dioxide into useful synthesis gas, named 'syngas', a gas mixture rich in hydrogen and carbon monoxide. However, this process requires high temperatures of about 900 °C to activate methane and carbon dioxide because dry reforming of methane reaction is highly endothermic. Therefore, a solid catalyst with appropriate thermal properties is needed for the reaction. As a consequence, efficient heating of the reactor is required to control heat transfer and optimize energy consumption. Microwave-assisted dry reforming of methane thus appears as a promising alternative to conventional heating. Here we review the recent research on microwave-assisted dry reforming of methane. We present thermodynamical aspects of the dry reforming of methane, and basics of microwave heating and apparatus. We analyse reformers that use microwave heating. Catalysts used in a microwave-assisted reformer are presented and compared with reactors using conventional heating. Finally, the energy balance is discussed.

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Section: Reactant Partial Pressurementioning

confidence: 77%

Section: Carbon-based Susceptormentioning

confidence: 99%

Section: Mixing Metal Catalysts With Microwave-absorbing Materialsmentioning

confidence: 99%

Section: Reaction Temperaturementioning

confidence: 99%

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Microwave-assisted dry reforming of methane for syngas production: a review

Pham

Ro²,

Chen

et al. 2020

Environ Chem Lett

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“…Conversely, metal-supported carbon-based carriers have better resistance to carbon deposition, thereby prolonging the catalytic activity for the DRM process (Cao et al, 2018;Fidalgo et al, 2011;Li et al, 2017;Li et al, 2019;Zhang et al, 2015). The metallic components, such as Ni, Fe, Co, alkaline and alkaline earth metal, are incorporated onto the carbonaceous carrier through mechanical mixing or impregnation method (Cao et al, 2018;Fidalgo et al, 2011;Li et al, 2017;Li et al, 2019;Zhang et al, 2015). The catalyst developed via mechanical mixing has a combined catalytic effect of the mixed metallic substances, which limits the enhancement of catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon (AC) Supported Nickel-Nanoparticles Prepared By Solid-Phase Method For Dry Reforming of Methane--Effect of Different Activated Carbons (ACs)

Chen

Bai

et al. 2021

Preprint

Self Cite

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In order to inhibit the apparent metal agglomeration and carbon deposition of the catalysts during the dry reforming of methane (DRM), the nickel nanoparticles supported over different types of activated carbon (AC) are synthesized by the solid-phase method. The main purpose of the work is to reveal the correlation of the support properties on the catalyst activity, and explore the effect of the support properties on the enhancem;ent of catalyst performance in the reforming process. The results show that the catalyst using AC1 as the support has the more uniform metal dispersion and form the least nickel nanoparticles of 4.11 nm, due to higher carbon content and the more developed surface area of AC1. It is also found that the catalyst prepared using AC1 shows high catalytic activity and long-term stability. Moreover, the catalyst of Ni/AC1 presents a self-enhancement of catalytic activity in the reforming process and promotes the conversion rates of CH4 and CO2 to 94.1% and 96.5%, respectively over 12 h. No obvious metal agglomeration is existed on the catalyst of Ni/AC1 after the reforming testing of 12 h. Meanwhile, the carbon deposit has little effect on catalytic performance, and metal agglomeration is the main affecting catalytic performance. In addition, the syngas generated using Ni/AC1 has a favorable H2/CO ratio of 1.

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