Cobalt and iron modified activated carbon from coal tar pitch: preparation and application as catalysts for methanol decomposition

2014 ◽  
Vol 21 (5) ◽  
pp. 503-512 ◽  
Author(s):  
Tanya Tsoncheva ◽  
Isabela Genova ◽  
Boyko Tsyntsarski ◽  
Momtchil Dimitrov ◽  
Daniela Paneva ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Coal Tar ◽  
Methanol Decomposition ◽  
Coal Tar Pitch ◽  
Modified Activated Carbon

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

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.

Rhenium and manganese modified activated carbon as catalyst for methanol decomposition

2007 ◽  
Vol 85 (2) ◽  
pp. 118-123 ◽  
Author(s):  
T Tsoncheva ◽  
S Vankova ◽  
O Bozhkov ◽  
D Mehandjiev
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Carbon Materials ◽  
Catalytic Properties ◽  
Methanol Decomposition ◽  
Complex Character ◽  
Active Centre ◽  
Modified Activated Carbon

Bicomponent manganese and rhenium modified activated carbon materials, prepared by different methods, are studied and compared with the corresponding monocomponent materials as catalysts in methanol decomposition to CO and hydrogen. The best catalytic activity and stability is observed for the sample obtained by simultaneous deposition of Mn and Re precursors. The complex character of the catalytic active centre, including manganese and rhenium irons in various oxidative states, is discussed. The determining role of the Mn(II) ions in the improvement of the catalytic properties is assumed.Key words: rhenium, manganese, activated carbon, methanol decomposition.

scholarly journals Activated carbon from coal tar pitch and furfural for the removal of p-nitrophenol and m-aminophenol

2011 ◽  
Vol 172 (1) ◽  
pp. 102-108 ◽  
Author(s):  
Bilyana Petrova ◽  
Boyko Tsyntsarski ◽  
Temenuzhka Budinova ◽  
Nartzislav Petrov ◽  
Leticia F. Velasco ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Coal Tar ◽  
Coal Tar Pitch
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