Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium
Glycerol electro-oxidation offers a green route to produce the high value added chemicals. Here in, we report the glycerol electro-oxidation over a series of multi walled carbon nano tubes supported monometallic (Pt/CNT and Pd/CNT) and bimetallic (Pt-Pd/CNT) catalysts in alkaline medium. The cyclic...
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| Format: | Article |
| Language: | English |
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American Scientific Publishers
2019
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| Online Access: | http://umpir.ump.edu.my/id/eprint/27579/1/Glycerol%20waste%20valorization%20to%20mesoxalic%20acid%20over1.pdf |
| _version_ | 1796993903172255744 |
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| author | Ahmad, M. S. |
| author_facet | Ahmad, M. S. |
| author_sort | Ahmad, M. S. |
| collection | UMP |
| description | Glycerol electro-oxidation offers a green route to produce the high value added chemicals. Here in, we report the glycerol electro-oxidation over a series of multi walled carbon nano tubes supported monometallic (Pt/CNT and Pd/CNT) and bimetallic (Pt-Pd/CNT) catalysts in alkaline medium. The cyclic voltammetry, linear sweep voltammetry and chronoamperometry measurements were used to evaluate the activity and stability of the catalysts. The Pt-Pd/CNT electrocatalyst exhibited the highest activity in terms of higher current density (129.25 A/m2) and electrochemical surface area (382 m2/g). The glycerol electro-oxidation products formed at a potential of 0.013 V were analyzed systematically by high performance liquid chromatography. Overall, six compounds were found including mesoxalic acid, 1,3-dihydroxyacetone, glyceraldehyde, glyceric acid, tartronic acid and oxalic acid. A highest mesoxalic acid selectivity of 86.42 % was obtained for Pt-Pd/CNT catalyst while a maximum tartronic acid selectivity of 50.17 % and 46.02 % was achieved for Pd/CNT and Pt/CNT respectively. It was found that the introduction of Pd into Pt/CNT lattice facilitated the formation of C3 products in terms of maximum selectivity achieved (86.42 %) while the monometallic catalysts (Pd/CNT and Pt/CNT) showed a poor performance in comparison to their counterpart. |
| first_indexed | 2024-03-06T12:40:24Z |
| format | Article |
| id | UMPir27579 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:40:24Z |
| publishDate | 2019 |
| publisher | American Scientific Publishers |
| record_format | dspace |
| spelling | UMPir275792020-01-28T04:28:45Z http://umpir.ump.edu.my/id/eprint/27579/ Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium Ahmad, M. S. TP Chemical technology Glycerol electro-oxidation offers a green route to produce the high value added chemicals. Here in, we report the glycerol electro-oxidation over a series of multi walled carbon nano tubes supported monometallic (Pt/CNT and Pd/CNT) and bimetallic (Pt-Pd/CNT) catalysts in alkaline medium. The cyclic voltammetry, linear sweep voltammetry and chronoamperometry measurements were used to evaluate the activity and stability of the catalysts. The Pt-Pd/CNT electrocatalyst exhibited the highest activity in terms of higher current density (129.25 A/m2) and electrochemical surface area (382 m2/g). The glycerol electro-oxidation products formed at a potential of 0.013 V were analyzed systematically by high performance liquid chromatography. Overall, six compounds were found including mesoxalic acid, 1,3-dihydroxyacetone, glyceraldehyde, glyceric acid, tartronic acid and oxalic acid. A highest mesoxalic acid selectivity of 86.42 % was obtained for Pt-Pd/CNT catalyst while a maximum tartronic acid selectivity of 50.17 % and 46.02 % was achieved for Pd/CNT and Pt/CNT respectively. It was found that the introduction of Pd into Pt/CNT lattice facilitated the formation of C3 products in terms of maximum selectivity achieved (86.42 %) while the monometallic catalysts (Pd/CNT and Pt/CNT) showed a poor performance in comparison to their counterpart. American Scientific Publishers 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/27579/1/Glycerol%20waste%20valorization%20to%20mesoxalic%20acid%20over1.pdf Ahmad, M. S. (2019) Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium. Journal of Nanoscience and Nanotechnology. pp. 1-29. ISSN 1533-4880 (Print); 1533-4899 (Online). (Submitted) (Submitted) |
| spellingShingle | TP Chemical technology Ahmad, M. S. Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium |
| title | Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium |
| title_full | Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium |
| title_fullStr | Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium |
| title_full_unstemmed | Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium |
| title_short | Glycerol waste valorization to mesoxalic acid over a bimetallic Pt-Pd/CNT catalyst in alkaline medium |
| title_sort | glycerol waste valorization to mesoxalic acid over a bimetallic pt pd cnt catalyst in alkaline medium |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/27579/1/Glycerol%20waste%20valorization%20to%20mesoxalic%20acid%20over1.pdf |
| work_keys_str_mv | AT ahmadms glycerolwastevalorizationtomesoxalicacidoverabimetallicptpdcntcatalystinalkalinemedium |