Characterization of electrooxidized Pittsburgh No. 8 Coal

Feasibility of hydrogen production from coal electrolysis at intermediate temperatures

“…Based on the results reported by Sathe and Botte [2] and De Abreu et al [17], the conversion of coal to CO 2 can be enhanced by increasing electrolysis temperature. Within this context, the objective of this paper is to evaluate the feasibility of coal electrolysis at intermediate temperatures (40-108 • C) for hydrogen production.…”

“…The authors proposed two reasons for the effect: (1) graphite acts as a dispersant for coal particles, and (2) the graphite helps removing some of the films that grow on the surface of the coal during oxidation that inhibit the complete oxidation of coal to CO 2 , and (4) the energy consumption for the production of hydrogen was 22 W h g −1 or 50% lower than the electrolysis of water at the same operating conditions. De Abreu et al [17] performed characterization of coal slurries after electrochemical oxidation. The authors found that in addition to increasing the CO 2 Faradaic efficiency of the process, increasing temperature up to 80 • C also changes the composition of the films found on the surface of the coal.…”

Study on Effect and Catalytic Mechanism of the Catalysts for Coal Oxidation in Alkaline Medium

“…In acidic electrolyte, the anode and cathode electrochemical reactions involving coal are described: 3,4 Anode C＋2H 2 O→CO 2 ＋4H ＋ ＋4e…”

“…Since the composition of coal itself is very complicated and varies with mine locations, coal oxidation product mapping has not yet been described. [11][12][13] Our team has done a lot of work on acidic electrolyte to optimize electrolysis process, to prepare anode for hydrogen production and to discuss the catalytic mechanism. A series of electrodes with good catalytic activity have been prepared, such as Ti-based platinum electrodes, 14 Ti/TiO 2 -based platinum electrodes 15 and Ti-based dimensionally stable anode .…”

Electrocatalytic oxidation of coal on Ti-supported metal oxides coupled with liquid catalysts for H2 production

“…Besides the hydrogen produced, some byproducts from the coal electro-oxidation might be also useful for chemical industries. Since the composition of coal itself is very complicated and varies with mine locations, coal oxidation product mapping has not yet been described [11][12][13]. In this paper, we used a Ti-supported catalyst metal oxide matrix coupled with different liquid catalysts to maximize the rate of coal electro-oxidation.…”