Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal
An O-containing structure in coal can affect the pyrolysis process; however, the influence of the introduced O-containing functional groups has rarely been investigated. To study this issue, two kinds of representative coal were selected for superfine pulverization and chemical oxidation. The <su...
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MDPI AG
2023-05-01
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| Online Access: | https://www.mdpi.com/1996-1073/16/11/4418 |
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| author | Yang Ma Yan Gao Xiumin Jiang |
| author_facet | Yang Ma Yan Gao Xiumin Jiang |
| author_sort | Yang Ma |
| collection | DOAJ |
| description | An O-containing structure in coal can affect the pyrolysis process; however, the influence of the introduced O-containing functional groups has rarely been investigated. To study this issue, two kinds of representative coal were selected for superfine pulverization and chemical oxidation. The <sup>13</sup>C-NMR and FTIR experiments demonstrated that O-containing functional groups, such as carboxyl, could be added into the carbon skeleton after 5 wt% peracetic acid modification. It was found that 1 wt% and 5 wt% hydrogen peroxide solutions had no such ability, but the 1 wt% solution could expand the pore structure and increase the specific surface area. Thermogravimetric experiments in the air showed that peracetic acid oxidation could increase the weight loss rate below 400 °C and reduce ignition temperatures. Pyrolysis experiments in the tube furnace proved that the amount of CO released increased and the commencing temperature decreased by 50 °C after the modification of peracetic acid. The generation paths of C<sub>2</sub>H<sub>4</sub> and C<sub>6</sub>H<sub>6</sub> changed; new generation peaks appeared near 200 °C. It has been strongly confirmed that superfine pulverization and chemical oxidation modification has obvious synergistic effects on the introduction of O-containing functional groups, especially for anthracite samples. |
| first_indexed | 2024-03-11T03:08:01Z |
| format | Article |
| id | doaj.art-d75acc9869b14749b19b4152d39b56e5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T03:08:01Z |
| publishDate | 2023-05-01 |
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| series | Energies |
| spelling | doaj.art-d75acc9869b14749b19b4152d39b56e52023-11-18T07:48:35ZengMDPI AGEnergies1996-10732023-05-011611441810.3390/en16114418Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized CoalYang Ma0Yan Gao1Xiumin Jiang2Department of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, ChinaDepartment of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, ChinaSchool of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaAn O-containing structure in coal can affect the pyrolysis process; however, the influence of the introduced O-containing functional groups has rarely been investigated. To study this issue, two kinds of representative coal were selected for superfine pulverization and chemical oxidation. The <sup>13</sup>C-NMR and FTIR experiments demonstrated that O-containing functional groups, such as carboxyl, could be added into the carbon skeleton after 5 wt% peracetic acid modification. It was found that 1 wt% and 5 wt% hydrogen peroxide solutions had no such ability, but the 1 wt% solution could expand the pore structure and increase the specific surface area. Thermogravimetric experiments in the air showed that peracetic acid oxidation could increase the weight loss rate below 400 °C and reduce ignition temperatures. Pyrolysis experiments in the tube furnace proved that the amount of CO released increased and the commencing temperature decreased by 50 °C after the modification of peracetic acid. The generation paths of C<sub>2</sub>H<sub>4</sub> and C<sub>6</sub>H<sub>6</sub> changed; new generation peaks appeared near 200 °C. It has been strongly confirmed that superfine pulverization and chemical oxidation modification has obvious synergistic effects on the introduction of O-containing functional groups, especially for anthracite samples.https://www.mdpi.com/1996-1073/16/11/4418O-containing functional groupscoal pyrolysismodificationsuperfine pulverized coal |
| spellingShingle | Yang Ma Yan Gao Xiumin Jiang Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal Energies O-containing functional groups coal pyrolysis modification superfine pulverized coal |
| title | Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal |
| title_full | Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal |
| title_fullStr | Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal |
| title_full_unstemmed | Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal |
| title_short | Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal |
| title_sort | influences of the introduced o containing functional groups on the gaseous pyrolysis product of superfine pulverized coal |
| topic | O-containing functional groups coal pyrolysis modification superfine pulverized coal |
| url | https://www.mdpi.com/1996-1073/16/11/4418 |
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