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Synthesis of Ni/SBA-15 For CO2 Reforming of CH4: Utilization Of Palm Oil Fuel Ash As Silica Source

Nornasuha, Abdullah and C. C., Chong and N. Aini, Razali and Chin, S. Y. and Setiabudi, H. D. (2017) Synthesis of Ni/SBA-15 For CO2 Reforming of CH4: Utilization Of Palm Oil Fuel Ash As Silica Source. In: The 3rd International Conference on Green Chemical Engineering and Technology (3rd GCET), 7-8 November 2017 , Melaka, Malaysia. p. 1.. (Unpublished)

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Abstract

In this study, Ni/SBA-15 was synthesized using Palm Oil Fuel Ash (POFA) as the silica source and was applied in the CO2 reforming of CH4 (CRM). The preparation of POFA sodium silicate (POFA-Na2SiO3) was carried using sodium hydroxide (NaOH) fusion method under several parameters including NaOH/POFA mass ratio, fusion temperature and NaOHfused POFA/H2O mass ratio. The optimum condition was achieved at NaOH/POFA mass ratio of 2:1, fusion temperature of 550 oC and NaOH-fused POFA/H2O mass ratio of 1:4, with maximum silica content of 40570 ppm. POFA-Na2SiO3 was used as the silica source for the synthesis of Ni/SBA-15(POFA), and its properties and catalytic performance were compared with Ni/SBA-15(TEOS). The physicochemical properties of the catalysts were characterized using XRD, BET and FTIR, meanwhile the catalytic performance of the catalyst was carried out in a fixed bed reactor at 800°C, atmospheric pressure and CO2/CH4 feed ratio of 1/1. The characterization results revealed that the physicohemical properties of Ni/SBA-15(POFA) were comparable with Ni/SBA-15(TEOS), except for the size of Ni and the strength of metalsupport interaction. The catalytic performance results showed that Ni/SBA-15(POFA) has comparable CO2 conversion (around 82%), but lower in CH4 conversion (differences around 27%) and stability, which might be due to the larger Ni size and weak metal-support interaction in Ni/SBA-15(POFA) as compared to Ni/SBA-15(TEOS). Although Ni/SBA-15(POFA) showed lower CH4 conversion in CRM, POFA can be considered as an alternative silica source to synthesis Ni/SBA-15 owing to the fact that the deficiency observed in the present catalyst can be improved via metal loading method.

Item Type: Conference or Workshop Item (Speech)
Uncontrolled Keywords: POFA; Alkali fusion method; H2/CO ratio; CO2 dry reforming
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 08 Feb 2018 04:14
Last Modified: 18 Oct 2018 07:49
URI: http://umpir.ump.edu.my/id/eprint/19324
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