scholarly journals Preparation, characterization and catalytic performance of Pt supported on porous carbonaceous materials in the oxidation of toluene as a volatile organic compound

2019 ◽  
Vol 45 ◽  
pp. 146867831988793
Author(s):  
Niloofar Atashi ◽  
Mohammad Hasan Peyrovi ◽  
Nastaran Parsafard
Keyword(s):  
Carbon Nanotube ◽  
Organic Compound ◽  
Power Law ◽  
Volatile Organic Compound ◽  
Inductively Coupled Plasma ◽  
Textural Properties ◽  
Catalytic Performance ◽  
Impregnation Method ◽  
X Ray ◽  
Volatile Organic

Platinum-carbonaceous catalysts were prepared by the wet impregnation method and tested for catalytic oxidation of toluene as a volatile organic compound. The textural properties of the constructed catalysts were considered by X-ray diffraction, X-ray fluorescence, inductively coupled plasma – optical emission spectroscopy, Fourier transform infrared, scanning electron microscope and N2 adsorption–desorption analysis. The catalytic assessments showed that the best activity (>99%) and high stability and selectivity to CO2 (>99%) are related to platinum-supported carbon nanotube. The curves of the conversion and selectivity demonstrate that the performance of catalysts to eliminate the volatile organic compound and turn it into CO2 conforms to the following descending order: platinum-supported carbon nanotube >platinum-supported graphene >platinum-supported activated carbon >platinum-supported carbon nanofibre. The kinetic of toluene oxidation has been evaluated as a function of toluene and oxygen partial pressures in different temperatures. Two kinetic models (Power Law and Mars–van Krevelen mechanisms) were applied to the reaction and compared with the experimental data. Mars–van Krevelen model is more appropriate than the Power Law model for this reaction as Mars–van Krevelen model showed better prediction of the behaviour of the reaction.

Selective adsorption of chlorinated volatile organic compound vapours by microcrystalline 1D coordination polymers

2016 ◽  
Vol 45 (47) ◽  
pp. 18832-18837 ◽  
Author(s):  
Massimo Cametti ◽  
Javier Martí-Rujas
Keyword(s):  
Organic Compound ◽  
Organic Compounds ◽  
Coordination Polymers ◽  
Volatile Organic Compound ◽  
Selective Adsorption ◽  
X Ray Diffraction ◽  
X Ray ◽  
Chlorinated Volatile Organic Compounds ◽  
H Nmr ◽  
Volatile Organic

Microcrystalline 1D coordination polymers 1–3Pwd are able to adsorb vapours of chlorinated volatile organic compounds (Cl-VOCs), displaying interesting selectivity patterns, as demonstrated by 1H-NMR and X-ray diffraction analyses.

Enhanced catalytic performance for volatile organic compound oxidation over in-situ growth of MnOx on Co3O4 nanowire

Chemosphere ◽  
2020 ◽  
Vol 244 ◽  
pp. 125532 ◽  
Author(s):  
Qian Zhao ◽  
Qingling Liu ◽  
Yanfei Zheng ◽  
Rui Han ◽  
Chunfeng Song ◽  
...  
Keyword(s):  
Organic Compound ◽  
Volatile Organic Compound ◽  
Catalytic Performance ◽  
In Situ Growth ◽  
Volatile Organic

Three-dimensional geometry, pore parameter, and fractal characteristic analyses of medium-density fiberboard by X-ray tomography, coupling with scanning electron microscopy and mercury intrusion porosimetry

2020 ◽  
pp. 174425912092669
Author(s):  
Huiqi Shao ◽  
Zhongbao Guo ◽  
Wenhui Li ◽  
Lei Fang ◽  
Menghao Qin ◽  
...  
Keyword(s):  
Organic Compound ◽  
Volatile Organic Compound ◽  
Building Materials ◽  
Mercury Intrusion Porosimetry ◽  
Medium Density Fiberboard ◽  
Three Dimensional ◽  
Volatile Organic Compound Emission ◽  
X Ray ◽  
Mercury Intrusion ◽  
Volatile Organic

Pore structure parameters are significant for investigating the diffusion properties of volatile organic compounds from building materials. Traditional characterization methods could provide ether surface morphology or some pore parameters of the material, which could not comprehensively reflect the overall information. X-ray tomography, as an advanced nondestructive method, can not only characterize the three-dimensional structure characteristics but also comprehensively measure pore parameters of materials. This study applied X-ray tomography to systematically analyze the geometry and volatile organic compound emission paths of medium-density fiberboard. The three-dimensional structures of pores and materials were reconstructed respectively. The isolated pores and connective pores were extracted to indicate the pore connectivity, and skeletonization was simultaneously applied, allowing visualization of the volatile organic compound diffusion paths. The porosity was 54.67%, and 99.91% of the pores were connective pores. The tortuosity was 2.07, and the fractal dimension was 2.605, indicating the heterogeneity and self-similarity of pore structures. Scanning electron microscopy was used to characterize the two-dimensional morphology of the material, and mercury intrusion porosimetry was applied to analyze the pore parameters. The results were consistent with that of X-ray tomography, and their coupling with X-ray tomography could comprehensively characterize the structures and parameters of indoor building materials, which could contribute significantly to future research on volatile organic compound emission mechanisms and building physics.

Carbon nanotube acoustic and optical sensors for volatile organic compound detection

2005 ◽  
Vol 16 (11) ◽  
pp. 2536-2547 ◽  
Author(s):  
M Penza ◽  
G Cassano ◽  
P Aversa ◽  
A Cusano ◽  
A Cutolo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Organic Compound ◽  
Volatile Organic Compound ◽  
Optical Sensors ◽  
Volatile Organic

Fabrication of Hierarchical SnO2 Nanocrystals and their Sensing Properties to Volatile Organic Compound Vapors

2011 ◽  
Vol 266 ◽  
pp. 1-4 ◽  
Author(s):  
De Liang Chen ◽  
Tao Li ◽  
Li Yin ◽  
Rui Zhang ◽  
Xin Jian Li
Keyword(s):  
Organic Compound ◽  
Volatile Organic Compound ◽  
Gas Sensing ◽  
Sno2 Nanostructures ◽  
X Ray Diffraction ◽  
Hierarchical Microstructure ◽  
X Ray ◽  
Sensing Properties ◽  
Volatile Organic ◽  
Sensing Performance

Hierarchical SnO2 (H-SnO2) and particulate SnO2 (P-SnO2) nanostructures were synthesized by a hydrothermal method with and without the aid of sodium 1-dodecanesulfonate (SDS), respectively. X-ray diffraction and scanning electron microscopy were used to characterize the products obtained. The sensing properties of the H-SnO2 and P-SnO2 nanostructures to volatile organic compound gas (VOCs) were measured. The H-SnO2 sensors show better gas-sensing performance than the P-SnO2 sensors due to the hierarchical microstructure.

Fabrication and adsorption characterization of single-walled carbon nanotube (SWNT) buckypaper (BP) for use in air samplers

2016 ◽  
Vol 8 (21) ◽  
pp. 4197-4203 ◽  
Author(s):  
J. Oh ◽  
E. L. Floyd ◽  
T. C. Watson ◽  
C. T. Lungu
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Organic Compound ◽  
Volatile Organic Compound ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Volatile Organic ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWNTs) have been investigated as a promising sorbent for volatile organic compound (VOC) sampling.

Sign in / Sign up

Export Citation Format

Share Document