scholarly journals A study on the preparation of pitch-based high-strength columnar activated carbon and mechanism of phenol adsorption from aqueous solution

RSC Advances ◽  
2018 ◽  
Vol 8 (31) ◽  
pp. 17558-17568 ◽  
Author(s):  
Peng Yao ◽  
Jianmeng Cen ◽  
Mengxiang Fang ◽  
Tao Wang ◽  
Qinhui Wang
Keyword(s):  
Aqueous Solution ◽  
High Pressure ◽  
Activated Carbon ◽  
High Temperature ◽  
Coal Tar ◽  
High Strength ◽  
Coal Tar Pitch ◽  
Phenol Adsorption

Coal tar pitch was ground into powder and hydroformed with high pressure. After pre-oxidation, the pitch was activated by CO2 at high temperature.

Phenol removal via activated carbon from co-pyrolysis of waste coal tar pitch and vinasse

2021 ◽  
Vol 38 (1) ◽  
pp. 64-71
Author(s):  
Ming Gao ◽  
Xiaona Wang ◽  
Changlei Xia ◽  
Na Song ◽  
Yuhui Ma ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Phenol Removal ◽  
Waste Coal

scholarly journals A TiO2 Semiconductor pH Sensor for High-Temperature-High-Pressure Aqueous Solution Use

1985 ◽  
Vol 34 (2) ◽  
pp. 132-134
Author(s):  
Nobuyoshi Hara ◽  
Kazuhiro Nakajima ◽  
Katsuhisa Sugimoto
Keyword(s):  
Aqueous Solution ◽  
High Pressure ◽  
High Temperature ◽  
Ph Sensor ◽  
High Temperature High Pressure

High-pressure and high-temperature Raman spectroscopy of carbonate ions in aqueous solution

2004 ◽  
Vol 207 (1-2) ◽  
pp. 47-58 ◽  
Author(s):  
Isabelle Martinez ◽  
Carmen Sanchez-Valle ◽  
Isabelle Daniel ◽  
Bruno Reynard
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
High Pressure ◽  
High Temperature ◽  
Carbonate Ions

scholarly journals Autoclave design for high pressure-high temperature corrosion studies

2015 ◽  
Vol 13 (4) ◽  
pp. 539-555 ◽  
Author(s):  
B.A. Lasebikan ◽  
A.R. Akisanya ◽  
W.F. Deans
Keyword(s):  
Aqueous Solution ◽  
High Pressure ◽  
High Temperature ◽  
Corrosion Behaviour ◽  
Testing Machine ◽  
Content Type ◽  
High Pressure High Temperature ◽  
Corrosion Studies ◽  
Wide Range ◽  
Design Pressure

Purpose – The purpose of this paper is to develop an autoclave that can be used to assess corrosion behaviour of suitable material in high-pressure–high-temperature (HPHT) environments. Many new discoveries of oil and gas field are in HPHT environments. The development of such fields requires appropriate selection of materials that are able to withstand not just the service loads but also corrosive production fluids in the HPHT environment. Design/methodology/approach – The exposure of material samples to elevated pressure and temperature is usually done using an autoclave. The suitability of an existing autoclave for HPHT corrosion studies is provided together with suggestions on necessary design modifications. An alternative design of the autoclave is proposed based on functionality requirements and life cycle cost assessment. Findings – It is concluded that the existing autoclave was unsuitable for HPHT corrosion tests, and modifications were very expensive to implement and/or not foolproof. A new autoclave was designed, manufactured, tested and successfully used to study the effect of aqueous solution on the corrosion of a pipe subject to a combination of axial tension, internal pressure and elevated temperature. Research limitations/implications – The maximum design pressure of 15 MPa is more than sufficient for high-pressure corrosion studies in aqueous solution where partial pressure of the dissolved gas is one of the main controlling parameters. However, the design pressure is only suitable for corrosion studies in a seawater environment of up to 1,500 m water depth. Originality/value – A new design of autoclave together with all the necessary piping, assembly and control system is proposed for HPHT corrosion studies. The autoclave can be used as standalone or integrated with a mechanical testing machine and thus enables corrosion studies under a wide range of loading.

Study on Preparation of Activated Carbon Precursor from Medium Temperature Coal Tar Pitch

2013 ◽  
Vol 726-731 ◽  
pp. 712-715 ◽  
Author(s):  
Shu Guang Ouyang ◽  
Rong Guang Xu
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Coal Tar ◽  
Absorption Capacity ◽  
Carbonization Temperature ◽  
Coal Tar Pitch ◽  
Carbon Precursor ◽  
Optimal Method ◽  
Medium Temperature ◽  
Adsorption Capacities

In order to explore the optimal method to prepare high performance activated carbon precursors from medium temperature coal tar pitch, orthogonal tests are adopted to study the effects of oxygen-blowing time in the pretreatment process as well as carbonization temperature and carbonization time in activation and carbonization processes on the adsorption capacities of activated carbon. Moreover, the effects of additives (coke powder and anionic surfactant) on the adsorption capacities of activated carbon are examined. The results show that the factors affecting the adsorption capacities of pitch-based activated carbon, in order of importance, are carbonization temperature, oxygen-blowing time, carbonization time and additives. The optimal conditions for preparation of activated carbon precursor from medium temperature pitch are: 4h for oxygen-blowing time, 400°C for carbonization temperature, 60 minutes for carbonization time and no additives. The iodine absorption capacity of the prepared activated carbon precursor which is activated for 100 min at 800°C is 1739mg/g.

Fabricating and Evaluating the Sterilization Effect of Composite Coal-Tar Pitch-Based Spherical Activated Carbon (TiO2/CB/Coal-Tar-Pitch-SAC)

2020 ◽  
Vol 53 (9) ◽  
pp. 526-532
Author(s):  
Lianzhong Shen ◽  
Guiying Xu ◽  
Beibei Han ◽  
Hui Ge ◽  
Shigekazu Kato ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Spherical Activated Carbon ◽  
Sterilization Effect

Solid state 13C NMR and high temperature 1H NMR determination of bulk structural properties for mesophase-containing semi-cokes prepared from coal tar pitch

Carbon ◽  
1998 ◽  
Vol 36 (7-8) ◽  
pp. 1043-1050 ◽  
Author(s):  
J.M. Andrésen ◽  
Y. Martín ◽  
S.R. Moinelo ◽  
M.M. Maroto-Valer ◽  
C.E. Snape
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Structural Properties ◽  
1H Nmr ◽  
13C Nmr ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Solid State 13C Nmr
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