Citation
Shakur, Maryam and Irshad, Maryum and Haider, Muhammad Sajjad (2025) Hydrogenolysis of glycerol to propanediols over Ni supported on MgO catalyst. Pertanika Journal of Science & Technology (Malaysia), 33 (2). pp. 1007-1030. ISSN 2231-8526
Abstract
A Ni/MgO catalyst was used to undergo hydrogenolysis of glycerol, a byproduct of biodiesel synthesis, in the aqueous phase at different nickel loadings (10–40% by weight). The wet impregnation-prepared catalysts were characterized by XRD, SEM, TPR, and BET methods and showed strong metal-support interaction, good Ni dispersion, and high surface area, respectively. The catalytic activity in a batch reactor was measured at 220°C, 3 MPa hydrogen pressure, and 20 hours of reaction time. Glycerol conversion exhibited an increasing trend with Ni loading in the following sequence: 10%Ni/MgO < 20%Ni/MgO < 30%Ni/MgO < 40%Ni/MgO. The 20%Ni/MgO catalyst yielded the highest 1,2-propanediol (1,2-PDO) production, with a subsequent decrease observed at higher Ni loadings. In particular, the 20%Ni/MgO catalyst produced a 74% total glycerol conversion and a 76% selectivity toward 1,2-PDO. The optimal reaction conditions were then ascertained by examining the effects of temperature (200–240°C), glycerol content (5%–30% by weight), hydrogen pressure (3–5 MPa), and reaction time (6–25 hours) on the activity of the 20%Ni/MgO catalyst.
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Abstract
A Ni/MgO catalyst was used to undergo hydrogenolysis of glycerol, a byproduct of biodiesel synthesis, in the aqueous phase at different nickel loadings (10–40% by weight). The wet impregnation-prepared catalysts were characterized by XRD, SEM, TPR, and BET methods and showed strong metal-support interaction, good Ni dispersion, and high surface area, respectively. The catalytic activity in a batch reactor was measured at 220°C, 3 MPa hydrogen pressure, and 20 hours of reaction time. Glycerol conversion exhibited an increasing trend with Ni loading in the following sequence: 10%Ni/MgO < 20%Ni/MgO < 30%Ni/MgO < 40%Ni/MgO. The 20%Ni/MgO catalyst yielded the highest 1,2-propanediol (1,2-PDO) production, with a subsequent decrease observed at higher Ni loadings. In particular, the 20%Ni/MgO catalyst produced a 74% total glycerol conversion and a 76% selectivity toward 1,2-PDO. The optimal reaction conditions were then ascertained by examining the effects of temperature (200–240°C), glycerol content (5%–30% by weight), hydrogen pressure (3–5 MPa), and reaction time (6–25 hours) on the activity of the 20%Ni/MgO catalyst.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | glycerol |
| AGROVOC Term: | biodiesel |
| AGROVOC Term: | catalysis |
| AGROVOC Term: | nickel |
| AGROVOC Term: | catalysts |
| AGROVOC Term: | research |
| AGROVOC Term: | propylene glycol |
| AGROVOC Term: | chemicophysical properties |
| AGROVOC Term: | efficiency |
| Geographical Term: | Pakistan |
| Uncontrolled Keywords: | Biomass; catalysis; glycerol; green economy; hydrogenolysis; Ni/MgO |
| Depositing User: | Ms. Azariah Hashim |
| Date Deposited: | 17 Aug 2026 04:01 |
| Last Modified: | 17 Aug 2026 04:01 |
| URI: | http://webagris.upm.edu.my/id/eprint/4796 |
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