Encapsulation of Au55 Clusters within Surface-Supported Metal–Organic Frameworks for Catalytic Reduction of 4-Nitrophenol

2020 ◽  
Author(s):  
Jinxuan Liu ◽  
Shahriar Heidrich ◽  
Jianxi Liu ◽  
Biao Guo ◽  
Michael Zharnikov ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Au55 Clusters ◽  
Supported Metal

Recent advances in adsorptive removal and catalytic reduction of hexavalent chromium by metal-organic frameworks composites

2021 ◽  
pp. 118274
Author(s):  
Mohamed E. Mahmoud ◽  
Sarah M. Elsayed ◽  
Safe ELdeen M.E. Mahmoud ◽  
Reham O. Aljedaani ◽  
Mohamed Abdel Salam
Keyword(s):  
Hexavalent Chromium ◽  
Catalytic Reduction ◽  
Metal Organic Frameworks ◽  
Adsorptive Removal ◽  
Recent Advances ◽  
Metal Organic

Tungsten(VI)–Copper(I)–Sulfur Cluster-Supported Metal–Organic Frameworks Bridged by in Situ Click-Formed Tetrazolate Ligands

2017 ◽  
Vol 56 (10) ◽  
pp. 5669-5679 ◽  
Author(s):  
Qiu-Fang Chen ◽  
Xin Zhao ◽  
Quan Liu ◽  
Ji-Dong Jia ◽  
Xiao-Ting Qiu ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Sulfur Cluster ◽  
Metal Organic ◽  
Supported Metal

scholarly journals Mechanistic studies on the conversion of NO gas on urea-iron and copper metal organic frameworks at low temperature conditions: in situ infrared spectroscopy and Monte Carlo investigations

2021 ◽  
Author(s):  
Ahmed Eid ◽  
Mohammad Aminur Rahman ◽  
Hind A. Al-Abadleh
Keyword(s):  
Monte Carlo ◽  
Infrared Spectroscopy ◽  
Low Temperature ◽  
Catalytic Reduction ◽  
Metal Organic Frameworks ◽  
Chemical Properties ◽  
Surface Species ◽  
Temperature Conditions ◽  
Metal Organic

Nitrogen oxides (NOx) emissions from high temperature combustion processes under fuel-lean conditions continue to be a challenge for the energy industry. Selective catalytic reduction (SCR) has been possible with metal oxides and zeolites. There is still the need to identify catalytic materials that are efficient in reducing NOx to environmentally benign nitrogen gas at temperatures lower than 200°C. Metal-organic frameworks (MOFs) emerged as a class of highly porous materials with unique physical and chemical properties. This study is motivated by the lack of systematic investigations on SCR using MOFs under industrially-relevant conditions. Here, we investigate the extent of NO conversion with two commercially-available MOFs; Basolite F300 (Fe-BTC) and HKUST-1 (Cu-BTC), mixed with solid urea as a source for the reductant, ammonia gas. For comparison, experiments were also conducted using cobalt ferrite (CoFe2O4) as a non-porous counterpart to relate its reactivity to those obtained from MOFs. Fourier-transform infrared spectroscopy (FTIR) was utilized to identify gas and surface species the temperature range 115 -180°C. Computational analysis was performed using Monte Carlo (MC) simulations to quantify adsorption energies of different surface species. The results show that the rate of ammonia production from the in situ solid urea decomposition was higher using CoFe2O4 than Fe-BTC and Cu-BTC, and that there is very limited conversion of NO on the mixed solid urea-MOF systems due to site blocking. The main conclusions from this study is that MOFs have limited abilities in converting NO under low temperature conditions, and that surface regeneration requires additional experimental steps.

scholarly journals Controlled Synthesis of bi- and tri-nuclear Cu-oxo Nanoclusters on Metal-organic Frameworks and the Structure-reactivity Correlations

2021 ◽  
Author(s):  
Qi Xue ◽  
Bryan Kit Yue Ng ◽  
Ho-wing Man ◽  
Tai-Sing Wu ◽  
Yun-Liang Soo ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Controlled Synthesis ◽  
Metal Nanoclusters ◽  
Catalytic Systems ◽  
Molecular Specificity ◽  
Metal Organic ◽  
Supported Metal

Precisely tuning the nuclearity of supported metal nanoclusters is pivotal for designing more superior catalytic systems, but it remains practically challenging. By utilising the chemical and molecular specificity of UiO-66-NH2...

scholarly journals Selective catalytic reduction of NO by cerium-based metal–organic frameworks

2020 ◽  
Vol 10 (2) ◽  
pp. 337-341 ◽  
Author(s):  
Simon Smolders ◽  
Jannick Jacobsen ◽  
Norbert Stock ◽  
Dirk De Vos
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Metal Organic Frameworks ◽  
Reduction Of No ◽  
Metal Organic

NO has been catalytically converted by Ce-UiO-66 and bimetallic Ce/Zr-CAU-24.

Ag-NPs embedded in two novel Zn3/Zn5-cluster-based metal–organic frameworks for catalytic reduction of 2/3/4-nitrophenol

2017 ◽  
Vol 46 (8) ◽  
pp. 2430-2438 ◽  
Author(s):  
Xue-Qian Wu ◽  
Dan-Dan Huang ◽  
Zhi-Hang Zhou ◽  
Wen-Wen Dong ◽  
Ya-Pan Wu ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Metal Organic Frameworks ◽  
Ag Nps ◽  
Catalytic Activities ◽  
Composite Catalysts ◽  
Metal Organic

Two novel microporous Zn-MOFs consist of different SBUs have been used to embed Ag NPs, resulting in two composite catalysts, which show outstanding catalytic activities toward the reduction of nitrophenol.

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