The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst
Selective hydrogenation of CO2 to methanol over Pd nanoparticles supported on MgO promoted ZnO oxide catalyst was investigated in a fixed bed continuous downflow reactor at 3 MPa pressure and temperature between 200–280 °C. The synthesized catalyst showed exceptionally high selectivity (>90%) for...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Sustainable Chemistry for Climate Action |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772826923000081 |
| _version_ | 1797788341968568320 |
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| author | Sachin Kumar Sharma Bappi Paul Anurag Srivastava Rohan Singh Pal Mukesh Kumar Poddar Tuhin Suvra Khan Chanchal Samanta Rajaram Bal |
| author_facet | Sachin Kumar Sharma Bappi Paul Anurag Srivastava Rohan Singh Pal Mukesh Kumar Poddar Tuhin Suvra Khan Chanchal Samanta Rajaram Bal |
| author_sort | Sachin Kumar Sharma |
| collection | DOAJ |
| description | Selective hydrogenation of CO2 to methanol over Pd nanoparticles supported on MgO promoted ZnO oxide catalyst was investigated in a fixed bed continuous downflow reactor at 3 MPa pressure and temperature between 200–280 °C. The synthesized catalyst showed exceptionally high selectivity (>90%) for methanol production via CO2 hydrogenation at low temperature (220 °C) and pressure (3 MPa). 2wt%Pd loaded on ZnO catalyst showed very less activity but the addition of MgO on the ZnO led to a higher dispersion of Pd, which directly influences catalyst activity and methanol production. The addition of 10 wt% MgO over 2wt%Pd/ZnO catalyst improved the catalyst activity, where we observed ∼ 8.2% CO2 conversion with ∼ 90.6% methanol selectivity. Density Functional Theory (DFT) calculation shows the addition of MgO at the Pd/ZnO catalyst promotes the adsorption of CO2, as well as reaction intermediates HCOO and COOH. The long-term stability of MgO-promoted Pd-ZnO was tested, and it was found that catalyst showed no deactivation even after 80 h time-on-stream. |
| first_indexed | 2024-03-13T01:35:12Z |
| format | Article |
| id | doaj.art-b31189578c164983a057773d2df49910 |
| institution | Directory Open Access Journal |
| issn | 2772-8269 |
| language | English |
| last_indexed | 2024-03-13T01:35:12Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sustainable Chemistry for Climate Action |
| spelling | doaj.art-b31189578c164983a057773d2df499102023-07-04T05:12:17ZengElsevierSustainable Chemistry for Climate Action2772-82692023-01-012100019The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalystSachin Kumar Sharma0Bappi Paul1Anurag Srivastava2Rohan Singh Pal3Mukesh Kumar Poddar4Tuhin Suvra Khan5Chanchal Samanta6Rajaram Bal7Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, IndiaLight Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India; School of Engineering and Technology, National forensic Sciences University, Sector-09, Gandhinagar 382007, IndiaLight Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaLight Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaLight Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaLight Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaBharat Petroleum Corporation Ltd., Greater Noida, Uttar Pradesh 201306, IndiaCorresponding author.; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaSelective hydrogenation of CO2 to methanol over Pd nanoparticles supported on MgO promoted ZnO oxide catalyst was investigated in a fixed bed continuous downflow reactor at 3 MPa pressure and temperature between 200–280 °C. The synthesized catalyst showed exceptionally high selectivity (>90%) for methanol production via CO2 hydrogenation at low temperature (220 °C) and pressure (3 MPa). 2wt%Pd loaded on ZnO catalyst showed very less activity but the addition of MgO on the ZnO led to a higher dispersion of Pd, which directly influences catalyst activity and methanol production. The addition of 10 wt% MgO over 2wt%Pd/ZnO catalyst improved the catalyst activity, where we observed ∼ 8.2% CO2 conversion with ∼ 90.6% methanol selectivity. Density Functional Theory (DFT) calculation shows the addition of MgO at the Pd/ZnO catalyst promotes the adsorption of CO2, as well as reaction intermediates HCOO and COOH. The long-term stability of MgO-promoted Pd-ZnO was tested, and it was found that catalyst showed no deactivation even after 80 h time-on-stream.http://www.sciencedirect.com/science/article/pii/S2772826923000081CO2 hydrogenationPd-nanoparticlesMethanolMgO promotorDFT study |
| spellingShingle | Sachin Kumar Sharma Bappi Paul Anurag Srivastava Rohan Singh Pal Mukesh Kumar Poddar Tuhin Suvra Khan Chanchal Samanta Rajaram Bal The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst Sustainable Chemistry for Climate Action CO2 hydrogenation Pd-nanoparticles Methanol MgO promotor DFT study |
| title | The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst |
| title_full | The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst |
| title_fullStr | The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst |
| title_full_unstemmed | The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst |
| title_short | The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst |
| title_sort | role of mgo during co2 hydrogenation to methanol over pd zno catalyst |
| topic | CO2 hydrogenation Pd-nanoparticles Methanol MgO promotor DFT study |
| url | http://www.sciencedirect.com/science/article/pii/S2772826923000081 |
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