Effects of Activation Conditions on the Properties of Sludge-Based Activated Coke

SEM and Auger microanalysis studies of Cu-Be dynode surfaces at each activation condition

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100109768 ◽

1978 ◽

Vol 36 (1) ◽

pp. 524-525

Author(s):

T. Koshikawa ◽

Y. Fujii ◽

E. Sugata ◽

F. Kanematsu

Keyword(s):

Electron Emission ◽

Secondary Electron ◽

Secondary Electron Emission ◽

Life Time ◽

Activation Process ◽

Beam Diameter ◽

Activation Temperature ◽

Electron Multiplier ◽

Activation Condition ◽

Activation Conditions

The Cu-Be alloys are widely used as the electron multiplier dynodes after the adequate activation process. But the structures and compositions of the elements on the activated surfaces were not studied clearly. The Cu-Be alloys are heated in the oxygen atmosphere in the usual activation techniques. The activation conditions, e.g. temperature and O2 pressure, affect strongly the secondary electron yield and life time of dynodes.In the present paper, the activated Cu-Be dynode surfaces at each condition are investigated with Scanning Auger Microanalyzer (SAM) (primary beam diameter: 3μmϕ) and SEM. The commercial Cu-Be(2%) alloys were polished with Cr2O3 powder, rinsed in the distilled water and set in the vacuum furnance.Two typical activation condition, i.e. activation temperature 730°C and 810°C in 5x10-3 Torr O2 pressure were chosen since the formation mechanism of the BeO film on the Cu-Be alloys was guessed to be very different at each temperature from the results of the secondary electron emission measurements.

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Faculty Opinions recommendation of Activation conditions for the induction of metabotropic glutamate receptor-dependent long-term depression in hippocampal CA1 pyramidal cells.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1897956.1446054 ◽

2010 ◽

Author(s):

Graham Collingridge ◽

Stephen Fitzjohn

Keyword(s):

Glutamate Receptor ◽

Metabotropic Glutamate Receptor ◽

Pyramidal Cells ◽

Long Term Depression ◽

Metabotropic Glutamate ◽

Ca1 Pyramidal Cells ◽

Hippocampal Ca1 ◽

Activation Conditions

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Effect of calcite on desulfurization and denitration performance of activated coke and its mechanism

Journal of Fuel Chemistry and Technology ◽

10.1016/s1872-5813(21)60033-6 ◽

2021 ◽

Vol 49 (4) ◽

pp. 554-563

Author(s):

Chao LI ◽

Hui-rong ZHANG ◽

Yan-xia GUO ◽

Fang-qin CHENG

Keyword(s):

Activated Coke

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Metagenomic analysis of aromatic ring-cleavage mechanism in nano-Fe3O4@activated coke enhanced bio-system for coal pyrolysis wastewater treatment

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2021.125387 ◽

2021 ◽

pp. 125387

Author(s):

Mengqi Zheng ◽

Hongjun Han ◽

Jingxin Shi ◽

Zhengwen Zhang ◽

Wencheng Ma ◽

...

Keyword(s):

Wastewater Treatment ◽

Aromatic Ring ◽

Metagenomic Analysis ◽

Ring Cleavage ◽

Coal Pyrolysis ◽

Aromatic Ring Cleavage ◽

Activated Coke ◽

Nano Fe3o4

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Comparative Study of Different Activation Treatments for the Preparation of Activated Carbon: A Mini-Review

Science Progress ◽

10.3184/003685017x14967570531606 ◽

2017 ◽

Vol 100 (3) ◽

pp. 299-312 ◽

Cited By ~ 7

Author(s):

Muhammad Imran Din ◽

Sania Ashraf ◽

Azeem Intisar

Keyword(s):

Activated Carbon ◽

Comparative Study ◽

Raw Materials ◽

Chemical Activation ◽

Comparative Approach ◽

Adsorption Mechanisms ◽

Temperature Activation ◽

Activation Conditions ◽

Physical And Chemical ◽

Characterisation Techniques

In this review, various methods of preparation of activated carbon from agricultural and commercial waste material are reviewed. In addition, we also discuss various activation treatments using a comparative approach. The data are organised in tabulated form for ease of comparative study. A review of numerous characterisation techniques is also provided. The effect of time and temperature, activation conditions, carbonisation conditions and impregnation ratios are explained and several physical and chemical activation treatments of raw materials and their impact on the micro- and mesoporous volumes and surface area are discussed. Lastly, a review of adsorption mechanisms of activated carbon (AC) is also provided.

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