Ni/SiO2 catalyst prepared via Ni-aliphatic amine complexation for dry reforming of methane: Effect of carbon chain number and amine concentration

Gao, Xingyuan; Ashok, Jangam; Widjaja, Sujanto; Hidajat, K.; Kawi, Sibudjing

doi:10.1016/j.apcata.2015.07.005

Cited by 69 publications

(33 citation statements)

References 75 publications

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“…Ni‐based catalysts have been widely used in steam reforming of methane and other hydrocarbons due to their low cost, high catalytic activity and non‐pyrophoric nature ,. Ni‐based catalysts gained greater consideration for HT‐WGS application due to high catalytic activity, ready abundance and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

2018

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This article provides a critical review of Ni-based catalysts employed in high temperature and ultra-high temperature water gas shift reaction (WGS) for hydrogen production and methane suppression. The promotional role of nature and type of active metal and support for WGS reaction is discussed with respect to activity and selectivity. This review mainly covers the recent strategic catalytic formulations like promotion with alkali metals, alloying with another metal and core@-shell-like structures for suppressing methanation during WGS reaction. The change in nature and strength of CO adsorption over modified Ni-surfaces is discussed using available in situ CO-DRIFTS results. The various WGS reaction and CO methanation pathways are also presented together with insights gained from computational DFT studies.[a] Dr.

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Section: Introductionmentioning

confidence: 99%

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

2018

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“…Also the mechanism of how this pair affects the formation of catalysts is still under exploration. In previous studies by our group, OAc and OAm respectively was reported to be an effective organic additive to decrease the size of Ni and enhance the MSI so that the reactivity and stability for DRM was improved . Thus it draws the interest of combining both of these two additives to develop a silica‐supported Ni catalyst by impregnating the Ni–OAm/OAc complexes on mesoporous silica, which shows high reactivity and anti‐coking property owing to its small size and strong MSI.…”

Section: Introductionmentioning

confidence: 99%

Anti‐Coking Ni/SiO₂ Catalyst for Dry Reforming of Methane: Role of Oleylamine/Oleic Acid Organic Pair

et al. 2015

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We demonstrate the synthesis of silica‐supported Ni catalyst in the presence of oleylamine (OAm) and oleic acid (OAc) as the ligand and surfactant. Compared with OAm or OAc alone, Ni/SiO2 prepared with OAm/OAc organic pair showed a much smaller Ni particle, a much stronger metal–support interaction (MSI), an enhanced initial conversion of both CO2 and CH4 and a prolonged stability over 16 h with zero carbon deposition. How the OAm/OAc organic pair affects the catalyst formation mechanism is proposed: OAc intimately interacts with silica by hydrogen bond formed between the carboxylic group and silanol group; OAm forms a complex with Ni and promotes the adsorption of Ni on silica through the basic property of amine ligand; amide formation between the carboxylic group of OAc and the amine group of OAm makes use of both additives; in addition, a stronger steric hindrance is given by the more complex aliphatic chain network of the pair, retarding the growth of Ni particles.

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“…In comparison to known catalysts, the stabilities of the NiMnO catalysts tested herein are not high, as can be seen from Figures 4a nd 7. [58][59][60][61] Thermophysical stability appearst o be the criticalf actor although the rate of carbon deposition is too high to solve the problemsf acing low-temperature DRM. This is potentially due to the high nickel contentso ft he mate-rials.…”

Section: Resultsmentioning

confidence: 99%

A Single‐Source Precursor Approach to Self‐Supported Nickel–Manganese‐Based Catalysts with Improved Stability for Effective Low‐Temperature Dry Reforming of Methane

et al. 2016

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Self‐supported nickel–manganese‐based catalysts were synthesized from heterobimetallic nickel manganese oxalate precursors via a versatile reverse micelle approach. The precursors were subjected to thermal degradation (400 °C) in the presence of synthetic air to form respective metal oxides, which were treated under hydrogen (500 °C) to form Ni2MnO4–O2–H2, Ni6MnO8–O2–H2 and NiO–O2–H2. Similarly, the precursors were also treated directly under hydrogen at the same temperature to form Ni2MnO4–H2 and Ni6MnO8–H2. The catalysts were extensively investigated by PXRD, SEM, TEM, XPS and BET analyses. The resulting catalysts were applied for dry reforming of methane (DRM) and exhibit better stability and resistance to coking than coprecipitated catalysts. Further, we show that addition of manganese, which is not an active catalyst for DRM alone, to nickel has a significant promotion effect on both the activity and stability of DRM catalysts, and a Ni/Mn ratio lower than 6:1 enables optimized activity for this system.

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Ni/SiO2 catalyst prepared via Ni-aliphatic amine complexation for dry reforming of methane: Effect of carbon chain number and amine concentration

Cited by 69 publications

References 75 publications

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

Anti‐Coking Ni/SiO₂ Catalyst for Dry Reforming of Methane: Role of Oleylamine/Oleic Acid Organic Pair

A Single‐Source Precursor Approach to Self‐Supported Nickel–Manganese‐Based Catalysts with Improved Stability for Effective Low‐Temperature Dry Reforming of Methane

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Ni/SiO2 catalyst prepared via Ni-aliphatic amine complexation for dry reforming of methane: Effect of carbon chain number and amine concentration

Cited by 69 publications

References 75 publications

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

Anti‐Coking Ni/SiO2 Catalyst for Dry Reforming of Methane: Role of Oleylamine/Oleic Acid Organic Pair

A Single‐Source Precursor Approach to Self‐Supported Nickel–Manganese‐Based Catalysts with Improved Stability for Effective Low‐Temperature Dry Reforming of Methane

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Anti‐Coking Ni/SiO₂ Catalyst for Dry Reforming of Methane: Role of Oleylamine/Oleic Acid Organic Pair