Monodispersed gold nanoparticles supported on a zirconium-based porous metal–organic framework and their high catalytic ability for the reverse water–gas shift reaction

Xu, Heng; Li, Yansong; Luo, Xikuo; Xu, Zheng; Ge, Jianping

doi:10.1039/c7cc02130e

Cited by 64 publications

(30 citation statements)

References 35 publications

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“…Carbon dioxide (CO 2 ) has been recognized as a possible candidate, since it can be converted to CO by the reverse water-gas shift reaction (RWGSR: CO 2 + H 2 → CO + H 2 O) and can also be easily obtained as exhaust gas from industrial and domestic buildings. RWGSR has been widely investigated by using heterogeneous supported metal catalysts such as Pt [11][12][13][14], Ni [15][16][17][18], Cu/Zn [19][20][21][22][23], Au [24][25][26], Fe [27][28][29][30] and so on. In addition to these catalyst system, RWGSR utilizing solid oxide fuel cell system has been also investigated.…”

Section: Introductionmentioning

confidence: 99%

Reverse water gas shift reaction using supported ionic liquid phase catalysts

Yasuda

Uchiage

Fujitani

et al. 2018

Applied Catalysis B: Environmental

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The reverse water-gas shift reaction (RWGSR) using a supported ionic liquid-phase (SILP) catalyst consisting of Ru catalyst, ionic liquid (1-butyl-3-methylimidazolium chloride ([C 4 mim]Cl)), and porous silica gel support, was investigated. The catalytic activity of the SILP catalyst toward RWGSR strongly depends on the kind of Ru catalyst and amount of IL. Among the three kinds of Ru catalysts ([RuCl 2 (CO) 3 ] 2 , Ru 3 (CO) 12 , and RuCl 3), [RuCl 2 (CO) 3 ] 2 exhibits the best catalytic activity. Brunauer-Emmett-Teller (BET) surface area analysis and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analyses of the SILP catalyst based on [RuCl 2 (CO) 3 ] 2 and [C 4 mim]Cl revealed that both the solvation of the active catalytic Ru species and the surface area of the ionic liquid phase strongly affect catalytic activity. Hence, these factors help to determine the optimum amount of [C 4 mim]Cl in the SILP catalyst. The resulting SILP catalyst, with an optimum constitution, exhibited greater catalytic activity than the homogeneous system in which the same amounts of [RuCl 2 (CO) 3 ] 2 and [C 4 mim]Cl were employed. Catalytically active Ru species during RWGSR in both systems were investigated by means of electrospray ionization-mass spectrometry (ESI-MS). Interestingly, the rate-determining step in the two systems was different, implying that the silica support lowers the activation energy of the protonation reaction in the catalytic cycle. Therefore, the facilitation of the RWGSR by a SILP catalyst system can be realized by good mass transport, derived from the large surface area, as well as the effect of the silica support on activation energy. Furthermore, 20 cycles of the RWGSR using the SILP catalyst were

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Section: Introductionmentioning

confidence: 99%

Reverse water gas shift reaction using supported ionic liquid phase catalysts

Yasuda

Uchiage

Fujitani

et al. 2018

Applied Catalysis B: Environmental

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“…UIO-67, which is porous metal-organic framework, was used to disperse Au nanoparticles, then the interaction between the metal and support was enhanced. Au@UIO-67 showed high activity and CO selectivity for RWGS [74]. A Pd-In/SiO 2 catalyst was synthesized by the wet impregnation method and used for RWGS.…”

Section: Co 2 Hydrogenationmentioning

confidence: 99%

Heterogeneous catalysts for catalytic CO2 conversion into value-added chemicals

et al. 2019

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As climate change becomes increasingly evident, reducing greenhouse gases including CO 2 has received growing attention. Because CO 2 is thermodynamically very stable, its conversion into value-added chemicals such as CO, CH 4 , or C 2 H 4 is difficult, and developing efficient catalysts for CO 2 conversion is important work. CO 2 can be converted using the gas-phase reaction, liquid-phase reaction, photocatalytic reaction, or electrochemical reaction. The gas-phase reaction includes the dry reforming of methane using CO 2 and CH 4 , or CO 2 hydrogenation using CO 2 and H 2. The liquid-phase reaction includes formic acid formation from pressurized CO 2 and H 2 in aqueous solution. The photocatalytic reaction is commonly known as artificial photo-synthesis, and produces chemicals from CO 2 and H 2 O under light irradiation. The electrochemical reaction can produce chemicals from CO 2 and H 2 O using electricity. In this review, the heterogeneous catalysts used for the gas-phase reaction or electrochemical reactions are discussed, because the liquid-phase reaction and photocatalytic reaction typically suffer from low productivity and poor durability. Because the gas-phase reaction requires a high reaction temperature of > 600°C, obtaining good durability is important. The strategies for designing catalysts with good activity and durability will be introduced. Various materials have been tested for electrochemical conversion, and it has been shown that specific metals can produce specific products, such as Au or Ag for CO, Sn or Bi for formate, Cu for C 2 H 4. Other unconventional catalysts for electrochemical CO 2 reduction are also introduced.

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“…Recently, metal or metal oxide NPs incorporated in MOFs have been proved to be effective catalysts for converting CO 2 to valuable chemicals, including CO, CH 4 , CH 3 OH, and light olefins [ 33 , 53 , 54 , 55 , 56 , 57 ]. The Materials of Institute Lavoisior (MIL) and University of Oslo (UiO) families, and their surface modified MOFs were mainly used as supports due to their high thermal stability and high chemical stability in water.…”

Section: Catalysis Applicationsmentioning

confidence: 99%

Nanoparticle/Metal–Organic Framework Composites for Catalytic Applications: Current Status and Perspective

et al. 2017

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Nanoparticle/metal–organic frameworks (MOF) based composites have recently attracted significant attention as a new class of catalysts. Such composites possess the unique features of MOFs (including clearly defined crystal structure, high surface area, single site catalyst, special confined nanopore, tunable, and uniform pore structure), but avoid some intrinsic weaknesses (like limited electrical conductivity and lack in the “conventional” catalytically active sites). This review summarizes the developed strategies for the fabrication of nanoparticle/MOF composites for catalyst uses, including the strategy using MOFs as host materials to hold and stabilize the guest nanoparticles, the strategy with subsequent MOF growth/assembly around pre-synthesized nanoparticles and the strategy mixing the precursors of NPs and MOFs together, followed by self-assembly process or post-treatment or post-modification. The applications of nanoparticle/MOF composites for CO oxidation, CO2 conversion, hydrogen production, organic transformations, and degradation of pollutants have been discussed. Superior catalytic performances in these reactions have been demonstrated. Challenges and future developments are finally addressed.

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Monodispersed gold nanoparticles supported on a zirconium-based porous metal–organic framework and their high catalytic ability for the reverse water–gas shift reaction

Cited by 64 publications

References 35 publications

Reverse water gas shift reaction using supported ionic liquid phase catalysts

Reverse water gas shift reaction using supported ionic liquid phase catalysts

Heterogeneous catalysts for catalytic CO2 conversion into value-added chemicals

Nanoparticle/Metal–Organic Framework Composites for Catalytic Applications: Current Status and Perspective

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