A strawsheave-like metal organic framework Ce-BTC derivative containing high specific surface area for improving the catalytic activity of CO oxidation reaction

2018 ◽  
Vol 259 ◽  
pp. 211-219 ◽  
Author(s):  
Xiaodong Zhang ◽  
Fulin Hou ◽  
Hongxin Li ◽  
Yang Yang ◽  
Yuxin Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Specific Surface ◽  
Co Oxidation ◽  
Surface Area ◽  
Specific Surface Area ◽  
Oxidation Reaction ◽  
Metal Organic Framework ◽  
High Specific Surface Area ◽  
Co Oxidation Reaction ◽  
Metal Organic

Metal–Organic Framework Derivatives for Improving the Catalytic Activity of the CO Oxidation Reaction

2017 ◽  
Vol 9 (18) ◽  
pp. 15394-15398 ◽  
Author(s):  
Wenlan Ji ◽  
Zhiling Xu ◽  
Pengfei Liu ◽  
Suoying Zhang ◽  
Weiqiang Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Metal Organic Framework ◽  
Co Oxidation Reaction ◽  
Metal Organic ◽  
Organic Framework

The Influence of Fe/Al Molar Ratio on Microreactor-Based Catalyst Preparation and Carbon Nanotube Preparation

2021 ◽  
Vol 1036 ◽  
pp. 130-136
Author(s):  
Ting Qun Tan ◽  
Lei Geng ◽  
Yan Lin ◽  
Yan He
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Small Diameter ◽  
High Specific Surface Area ◽  
Detection Methods ◽  
Molar Ratio ◽  
High Catalytic Activity

In order to prepare carbon nanotubes with high specific surface area, small diameter, low resistivity, high purity and high catalytic activity, the Fe-Mo/Al2O3 catalyst was prepared based on the microreactor. The influence of different Fe/Al molar ratios on the catalyst and the carbon nanotubes prepared was studied through BET, SEM, TEM and other detection methods. Studies have shown that the pore structure of the catalyst is dominated by slit pores at a lower Fe/Al molar ratio. The catalytic activity is the highest when the Fe/Al molar ratio is 1:1, reaching 74.1%. When the Fe/Al molar ratio is 1:2, the catalyst has a higher specific surface area, the maximum pore size is 8.63 nm, and the four-probe resistivity and ash content of the corresponding carbon nanotubes are the lowest. The higher the proportion of aluminum, the higher the specific surface area of the catalyst and the carbon nanotubes, and the finer the diameter of the carbon nanotubes, which gradually tends to relax. The results show that when the Fe/Al molar ratio is 1:2, although the catalytic activity of the catalyst is not the highest, the carbon nanotubes prepared have the best performance.

Modulation of the catalytic activity of Pt nanoparticles through charge-transfer interactions with metal–organic frameworks

2017 ◽  
Vol 53 (50) ◽  
pp. 6720-6723 ◽  
Author(s):  
Shotaro Yoshimaru ◽  
Masaaki Sadakiyo ◽  
Aleksandar Staykov ◽  
Kenichi Kato ◽  
Miho Yamauchi
Keyword(s):  
Catalytic Activity ◽  
Charge Transfer ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Metal Organic Frameworks ◽  
Pt Nanoparticles ◽  
Charge Transfer Interaction ◽  
Co Oxidation Reaction ◽  
Metal Organic ◽  
A Charge

A charge transfer interaction between Pt nanoparticles and MOFs modulated the catalytic activity of Pt for a CO oxidation reaction.

scholarly journals Application of CoMn/CoFe layered double hydroxide based on metal-organic frameworks template to activate peroxymonosulfate for 2, 4-dichlorophenol degradation

2021 ◽  
Author(s):  
Chenyu Liu ◽  
Haitong Wei ◽  
Yanhui Gao ◽  
Ning Wang ◽  
Xiaoying Yuan ◽  
...  
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Active Sites ◽  
Metal Organic Frameworks ◽  
High Specific Surface Area ◽  
State Transformation ◽  
Alkaline Conditions ◽  
Metal Organic

Abstract Metal-Organic Frameworks (MOFs) have unique properties and stable structure, which have been widely used as templates/precursors to prepare well-developed pore structure and high specific surface area materials. In this article, an innovative and facile method of crystal reorganization was designed by using MOFs as sacrificial templates to prepare LDH nano-layer sheet structure through a pseudomorphic conversion process under alkaline conditions. The obtained CoMn-LDH and CoFe-LDH catalysts broke the ligand of MOFs and reorganized the structure on the basis of retaining a high specific surface area and a large number of pores, which have higher specific surface area and well-developed pore structure than LDH catalysts prepared by traditional methods, and thus provide more active sites to activate PMS. Due to the unique framework structure of MOFs, the MOF derived CoMn-LDH and CoFe-LDH catalysts could provide more active sites to activate PMS, and achieve a 2, 4-dichlorophenol (2, 4-DCP) degradation of 99.3% and 99.2% within 20 min, respectively. Besides, the two LDH catalysts displayed excellent degradation performance for bisphenol A (BPA), ciprofloxacin (CIP) and 2, 4-dichlorophenoxyacetic acid (2, 4-D). XPS indicated that the valence state transformation of metal elements participated in PMS activation. EPR manifested sulfate radical () and singlet oxygen (1O2) were the main species for degrading pollutants. In addition, after the three-cycle experiment, the CoMn-LDH and CoFe-LDH catalysts also showed long-term stability with a slight activity decrease in the third cycle. The phytotoxicity assessment determined by the germination of mung beans proved that PMS activation by MOFs-derived LDH catalyst can basically eliminate the phytotoxicity of 2, 4-D solution. This research not only developed high-activity LDH catalysts for PMS activation, but also expanded the environmental applications of MOFs derivants.

A review on metal-organic framework-derived anode materials for potassium-ion batteries

2021 ◽  
Author(s):  
Qiongyi Xie ◽  
Hong Ou ◽  
Qingyun Yang ◽  
Xiaoming Lin ◽  
Akif Zeb ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Surface ◽  
Surface Area ◽  
Anode Materials ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
High Specific Surface Area ◽  
Electrochemical Energy Storage ◽  
Energy Storage And Conversion ◽  
Metal Organic

In recent years, metal-organic frameworks (MOFs) have been widely used in various fields, including electrochemical energy storage and conversion because of their excellent properties, such as high specific surface area,...

Vapor-assisted preparation of Mn/Fe/Co/Zn–Cu bimetallic metal–organic frameworks based on octahedron micron crystals (PCN-6′)

2019 ◽  
Vol 43 (17) ◽  
pp. 6452-6456 ◽  
Author(s):  
Jiangfeng Yang ◽  
Bingjie Du ◽  
Ning Yuan ◽  
Xiaoxia Jia ◽  
Jinping Li
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Crystal Morphology ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Strong Acid ◽  
Weak Acid ◽  
Metal Organic

A Cu-based metal–organic framework (PCN-6′) with octahedral crystal morphology was synthesized using a strong acid (HCl) and characterized by SEM, TGA and BET, which showed a larger specific surface area and pore volume than the corresponding counterpart that was prepared using a weak acid (oxalate).

Synthesis and catalytic application of PVP-coated Ru nanoparticles embedded in a porous metal–organic framework

2014 ◽  
Vol 43 (29) ◽  
pp. 11295-11298 ◽  
Author(s):  
Masaaki Sadakiyo ◽  
Masaru Kon-no ◽  
Katsutoshi Sato ◽  
Katsutoshi Nagaoka ◽  
Hidetaka Kasai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Metal Organic Framework ◽  
Porous Metal ◽  
Hybrid Catalyst ◽  
Ru Nanoparticles ◽  
Catalytic Application ◽  
Co Oxidation Reaction ◽  
Metal Organic ◽  
Organic Framework

A hybrid catalyst consisting of polymer-coated Ru nanoparticles embedded in a porous metal–organic framework of ZIF-8 exhibits higher catalytic activity and higher CO2 selectivity in a CO oxidation reaction with H2 gas feeds.

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