Abdullah, N. and Ainirazali, N. and Chong, C. C. and Razak, H. A. and Setiabudi, H. D. and Chin, S. Y. and Jalil, A. A. (2020) Effect of NI loading on SBA-15 synthesized from palm oil fuel ash waste for hydrogen production via CH4 dry reforming. International Journal of Hydrogen Energy, 45 (36). pp. 18411-18425. ISSN 0360-3199
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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2019.09.093
Abstract
The successful synthesis of SBA-15 using silica source extracted from palm oil fuel ash (POFA) was proven with the presence of mesostructure characteristics as evidenced by low angle XRD, N2 adsorption-desorption isotherms and TEM. Different amounts of Ni were loaded on the synthesized SBA-15(POFA) using the impregnation method at 80 °C. The influence of Ni loading over the Ni/SBA-15(POFA) physiochemical properties and CO2 reforming of CH4 (CRM) were investigated in a stainless steel fixed-bed reactor at 800 °C and atmospheric pressure with 1:1 CO2:CH4 volumetric feed composition. An increment in Ni loading on SBA-15(POFA) from 1 to 5 wt% decreased the BET surface area and crystallinity of catalyst as proven by N2 adsorption–desorption and XRD analysis. The catalytic performance of CRM followed the sequence of 3 wt% > 5 wt% > 2 wt% > 1 wt% -Ni/SBA-15(POFA). This result was owing to the even distribution of Ni and good Ni–O–Si interaction of 3 wt% Ni/SBA-15(POFA) as proved by TEM, FTIR and XPS. Lowest H2/CO ratio and catalyst activity and stability of 1 wt% Ni/SBA-15(POFA) were due to the weaker Ni–O–Si interaction and small amount of basic sites that favor the reverse water gas shift (RWGS) reaction and carbon formation. The recent finding indicates that a quantity as small as 3 wt% Ni loaded onto SBA-15(POFA) could elicit outstanding catalytic performance in CRM, which was comparable with 10 wt% Ni loading catalysts reported in literature.
Item Type: | Article |
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Uncontrolled Keywords: | CO2 reforming, Ni support interaction, POFA |
Subjects: | T Technology > TP Chemical technology |
Divisions: | Chemical and Energy Engineering |
ID Code: | 93058 |
Deposited By: | Narimah Nawil |
Deposited On: | 07 Nov 2021 05:54 |
Last Modified: | 07 Nov 2021 05:54 |
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