William Mah, Wey Lian and Nor Shafiqah, Mohd Nasir and Nurul Asmawati, Roslan and Siti Nor Amira, Rosli and Suganthi, Subramaniam and Ahmad Faiz, Malek and Osazuwa, Osarieme Uyi and Sumaiya, Zainal Abidin (2022) Deciphering the imperative role of ruthenium in enhancing the performance of Ni/Nd2O3.Gd2O3 in glycerol dry reforming. Chemical Engineering Communications. pp. 1-17. ISSN 1563-5201. (Published)
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Abstract
Glycerol dry reforming (GDR) turns glycerol and CO2 into valuable syngas. The present work aims to decipher the imperative role of Ru metal in enhancing the performance of Ni/Nd2O3.Gd2O3 in GDR. The unpromoted 15%Ni/Nd2O3.Gd2O3 and promoted 3%Ru-Ni/Nd2O3.Gd2O3 catalysts are synthesized via the ultrasonic-assisted impregnation method while XRD, FESEM-EDX, H2-TPR and CO2-TPD analyses are used to characterize the catalysts. In this study, the influence of reaction variables such as temperature and the CO2 to glycerol ratio (CGR) was investigated. In accordance with XRD and FESEM-EDX analyses, the promoted catalyst exhibited a more refined morphology and more uniform Ni dispersion than the unpromoted catalyst. From the reaction study, the promoted 3%Ru-15%Ni/Nd2O3.Gd2O3 gives higher glycerol conversion (91%), H2 yield (65%) and CO yield (80%) at a reaction temperature of 800 °C and CGR of 1. This is due to the higher number of available active sites as well as the excellent diffusion of Ni metal across the surface of the catalyst. However, as Ni metal is susceptible to carbon formation and is easily sintered, the production of carbon is unavoidable for the catalysts. The XRD and TPO analyses shown that the addition of Ru reduces the amount of carbon that accumulates on the site of the catalyst, which in turn reduces the rate of deactivation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Glycerol dry reforming; hydrogen; lanthanide support; Ni-based catalyst; Ru promoter; syngas |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Faculty/Division: | Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow Institute of Postgraduate Studies College of Engineering |
| Depositing User: | Noorul Farina Arifin |
| Date Deposited: | 30 Sep 2022 03:06 |
| Last Modified: | 30 Sep 2022 03:06 |
| URI: | http://umpir.ump.edu.my/id/eprint/35326 |
| Download Statistic: | View Download Statistics |
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