Stability of copper based catalysts enhanced by carbon dioxide in methanol decomposition

Cheng, Wood-Hi; Shiau, Ching-Yeh; Liu, Tzu Hsieh; Tung, Hsiao Ling; Chen, Hsuan Hsu; Lu, Jyh-Feng; Hsu, Chin Cheng

doi:10.1016/s0926-3373(98)00024-1

Cited by 20 publications

(18 citation statements)

References 25 publications

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“…In the case of copper-containing catalysts the literature data concerning the role of various copper species in this process are rather controversial. Usually the participation of metallic copper is reported [11][12][13]16,[18][19][20][23][24][25][26]32,33,42,45,46] but the role of copper ions in this process is not completely clear [12,14,17,21,22,28,29,31,43,44,47,48]. In our previous studies [79][80][81][82][83][84], the nature of a catalytic active complex (CAC) of copper modified activated carbon in methanol decomposition has been discussed.…”

Section: Discussionmentioning

confidence: 99%

Copper-modified mesoporous MCM-41 silica: FTIR and catalytic study

Tsoncheva

Venkov

Dimitrov

et al. 2004

Journal of Molecular Catalysis A: Chemical

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Section: Discussionmentioning

confidence: 99%

Copper-modified mesoporous MCM-41 silica: FTIR and catalytic study

Tsoncheva

Venkov

Dimitrov

et al. 2004

Journal of Molecular Catalysis A: Chemical

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“…Since the reduction in the active surface area may also affect the catalytic activity, it is estimated for Ni 3 N and Ni 3 N−Au c using TPR. The measured reduction in active surface areas are approximately 535 quantity (cm −2 g −1 STP) of Ni 3 N−Au c better than 473.5 quantity (cm −2 g −1 STP) of Ni 3 N, indicating that Ni 3 N−Au c exists stronger reducible properties than Ni 3 N . From the above mentioned, compared to Ni 3 N, the Ni 3 N−Au c cocatalyst offers photo‐generated charge carriers separation and migration ability, and also promotes reaction kinetics and improve reducing activity.…”

Section: Resultsmentioning

confidence: 82%

Ultra‐low Loading of Au Clusters on Nickel Nitride Efficiently Boosts Photocatalytic Hydrogen Production with Titanium Dioxide

Meng

Kuang

et al. 2020

ChemCatChem

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Platinum (Pt) is a widely used co-catalyst with excellent performance for photocatalytic hydrogen evolution. However, it is not suitable for industrial production because of its prohibitive cost. Currently, there are two means to overcome this challenge. One is to, find alternative cocatalysts for Pt. The other is to develop ultrasmall of noble metal clusters, which reduces the amount of noble metal loading required. This reduces the loading amount of noble metals and improves their atomic efficiency. In this work, we have integrated both these approaches to generate a non-noble metal co-catalyst nickel nitride (Ni 3 N) and Au clusters (Au c ). The composite cocatalyst (Ni 3 NÀ Au c ) thus obtained promotes photocatalytic hydrogen production of TiO 2 . The (Ni 3 NÀ Au c À TiO 2 ) composite with an ultralow amount of Au c (0.00025 wt%) shows photocatalytic hydrogen production rates that are even higher than that of PtÀ TiO 2 . The loading requirement of noble metal is reduced by 99.95 wt% compared to the optimal load of Pt; further indicating the cost efficiency possible through this method.

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“…Carbon deposition commonly occurs during the methane decomposition and reforming over Ni catalysts, often causing deactivation of catalysts and plugging of reaction chamber. 6,24) However, 25,26) With the exception of our studies on the Ni 3 Al foils, 11,12) there have been no report on carbon deposition over common Ni-based catalysts. The Ni 3 (Si,Ti) and Ni 3 Al foil catalysts can be categorized as Ni base catalysts because the fine Ni particles serve as catalyst in both cases, but their activity for carbon deposition is considerably different from that of the common Ni base catalysts.…”

Section: Comparison Of Catalytic Properties Betweenmentioning

confidence: 83%

Catalytic Properties of Cold-Rolled Ni<SUB>3</SUB>(Si,Ti) Intermetallic Foils for Methanol Decomposition

et al. 2010

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Methanol decomposition tests were carried out for the first time on cold-rolled Ni 3 (Si,Ti) foils in a temperature range of 513-793 K to investigate their potential catalytic properties for hydrogen production. The catalytic activity was observed at temperatures above 713 K. At 793 K, the catalytic activity changed with the reaction time in three stages: low-activity incubation, rapid spontaneous activation and highactivity state. Surface analysis revealed an intensive formation of fine Ni particles on the foil surfaces after the second stage where rapid spontaneous activation was observed. The formation of the fine Ni particles was considered to be induced by the selective oxidation of Si in Ni 3 (Si,Ti). The catalytic activity in the second and third stages was due to the fine Ni particles formed by the spontaneous activation.

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Stability of copper based catalysts enhanced by carbon dioxide in methanol decomposition

Cited by 20 publications

References 25 publications

Copper-modified mesoporous MCM-41 silica: FTIR and catalytic study

Copper-modified mesoporous MCM-41 silica: FTIR and catalytic study

Ultra‐low Loading of Au Clusters on Nickel Nitride Efficiently Boosts Photocatalytic Hydrogen Production with Titanium Dioxide

Catalytic Properties of Cold-Rolled Ni<SUB>3</SUB>(Si,Ti) Intermetallic Foils for Methanol Decomposition

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