Catalytic Decomposition Kinetics and Mechanism of Hydrogen Peroxide by Modified Activated Carbon

Liu, Zhen Zhong; Deng, Hui Ping; Chen, Zhan Li

doi:10.4028/www.scientific.net/AMR.243-249.4860

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Study on the Characteristics of Biodegradable Dissolved Organic Carbon and Bacteria Regrowth in Drinking Water Distribution-System of a Chinese City
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Water Distribution System Modeling and Smart Grid Technology
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Application Research on Treatment of Micro-Polluted Raw Water in Winter Western Mountainous Cities Using Composite Coagulants of PAC-PDM
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Discussion on the Design of Water Supply and Sewage Engineering for School Canteen
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Catalytic Decomposition Kinetics and Mechanism of Hydrogen Peroxide by Modified Activated Carbon
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Analysis on Mass Balance and Optimization of Operating Performance in Anaerobic-Anoxic-Aerobic Oxidation Ditch Process
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Preozonation on Removal of Organic Matter in Water and Biological Stability
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Numerical Simulation on Mechanical Ventilation for Odor Removal Efficiency in a Bathroom
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Investigation on Double-Tube Copper-Aluminum Column-Wing Type Radiators
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Home Advanced Materials Research Advances in Civil Engineering and ArchitectureCatalytic Decomposition Kinetics and Mechanism of...

Catalytic Decomposition Kinetics and Mechanism of Hydrogen Peroxide by Modified Activated Carbon

Abstract:

Modified activated carbon composites were prepared and their catalytic properties were evaluated in the H₂O₂ decomposition. Activated carbon alone showed very low activities compared to iron and manganese oxides / activated carbon composites, suggesting that the presence of Fe and Mn in the oxide plays an important role for the activation of H₂O₂. The presence of Mn in the composite structure produced a remarkable increase in the reactivity. The obtained results showed that the peroxide decomposition catalyzed by GACFM met pseudo-first-order kinetic and the maximum OH· production was on GACF1M3.The decomposition mechanism of H₂O₂ was analyzed in detail.

Info:

Periodical:

Advanced Materials Research (Volumes 243-249)

Main Theme:

Advances in Civil Engineering and Architecture

Edited by:

Chaohe Chen, Yong Huang and Guangfan Li

Pages:

4860-4863

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.4860

Citation:

Z. Z. Liu et al., "Catalytic Decomposition Kinetics and Mechanism of Hydrogen Peroxide by Modified Activated Carbon", Advanced Materials Research, Vols. 243-249, pp. 4860-4863, 2011

Online since:

May 2011

Authors:

Zhen Zhong Liu, Hui Ping Deng, Zhan Li Chen

Keywords:

Decomposition, Kinetic, Modified Activated Carbon

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$38.00

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References

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Paper TitlePages

Catalytic Properties of Ni₃Al for Hydrogen Production Reactions

Authors: Ya Xu, Satoshi Kameoka, Kyosuke Kishida, Masahiko Demura, An Pong Tsai, Toshiyuki Hirano

Abstract: Ni3Al has attractive high temperature properties, such as high strength and good oxidation/corrosion resistance, and is possible to be used for high temperature chemical processing and manufacture. Until now, the catalytic properties of Ni3Al were rarely investigated since the leaching of aluminum from Ni3Al is difficult to obtain a porous Raney-Ni compared to NiAl3 and Ni2Al3. In the present work, the catalytic properties of Ni3Al were examined for hydrogen production reactions from methanol. It was found that alkali-leached Ni3Al showed high activity for methanol decomposition (CH3OH→ 2H2+CO). Furthermore, Ni3Al catalysts suppress the formation of methane, i.e. they show higher selectivity for the methanol decomposition reaction than Ni catalyst. These results indicate a possibility for Ni3Al used as a catalyst for hydrogen production reaction.

755

Characterization of Fe Based Nanopowders Synthesized by Gas Phase Synthesis

Authors: Chul Jin Choi, Jin Chun Kim, Ji Hun Yu, Byoung Kee Kim

Abstract: Nanosized Fe based powders have been synthesized by both chemical vapor condensation (CVC) and plasma arc discharge (PAD) processes. Fe, Fe-C and Fe-N nanopowders were successfully synthesized. The influence of experimental parameters on microstructures and phase composition of nanopowders was investigated. The prepared powders were nearly spherical in shape and core-shell type in structure. Various kinds of Fe-C and Fe-N composite nanopowders could be synthesized by controlling the carrier gas and precursor decomposition temperature, etc.

3547

Hydrogen Production by Catalytic Decomposition of Methane over Carbon Nanofibers

Authors: Ling Han, Tae Ki Lim, Young Jun Kim, Hyun Sik Hahm, Myung Soo Kim

Abstract: Catalytic decomposition of methane is an environmentally attractive approach to CO2-free hydrogen production. The decomposition of methane over carbon nanofibers was carried out in a fixed bed flow reactor. The objectives of this study are to demonstrate the activity of carbon nanofibers for methane decomposition in comparison with that of carbon black and to investigate the nature of active sites in the carbon catalysts. The catalytic activities of different carbon catalysts were found in the following order: carbon nanofiber > HI-900L carbon black > N330 carbon black > non-catalyst. After investigating the surface area and mass of the carbon catalysts after methane decomposition, the nature of active sites was discused.

Study on Catalytic Decomposition of N₂O over Modified Zeolites

Authors: Xing Yong Liu, Wei Wei

Abstract: A series of Beta, ZSM-5 and MCM-22 zeolites modified with metal ions (such as Fe ³⁺ , Co ²⁺ , Ce ³⁺ , Ni ²⁺ and Cu ²⁺ ) for catalytic decomposition of N₂O were prepared by using wet ion exchange method. The effects of different metal ions, the contents of metal ions and silicon aluminum ratio on catalytic decomposition activities of N₂O were investigated, respectively. The results indicated that Beta with a SiO₂/Al₂O₃=30 and 1% Fe ³⁺ have better catalytic decomposition activities to N₂O, the completed catalytic decomposition temperature to 35% N₂O in the condition of 4000 h^-1 GVSH is 350 ⁰ C.

145

Chrysotile-Asbestos Decomposition by CCl₂F₂-Decomposed Acidic Gas

Authors: Tian Cheng Liu, Yu Jiao Guo, Hong Bin Wang, Ming Long Yuan

Abstract: Asbestos was widely used in numerous materials and building products duo to its desirable properties. However, it is well known that asbestos inhalation causes health damage and its inexpensive decomposition technique is necessary to be developed for pollution prevention. Dichlorodifluoromethane (CCl2F2) must be decomposed before being liberated into the atmosphere. Acidic gas (HF and HCl) generated from the decomposition of dichlorodifluoromethane (CCl2F2) in the presence of water vapor and oxygen, was reacted with chrysotile-asbestos fibers. At high temperature beyond 300 °C, chrysotile-asbestos fibers were completely decomposed, and sellaite and hematite were detected in the decomposed products.

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