Promising hydrothermal technique for efficient CO2 methanation over Ni/SBA-15. (2nd August 2019)

• Record Type: Journal Article
• Authors: Bukhari, Syahida Nasuha; Chong, Chi Cheng; Teh, Lee Peng; Vo, Dai-Viet N.; Ainirazali, Nurul; Triwahyono, Sugeng; Jalil, Aishah Abdul; Setiabudi, Herma Dina
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 37(2019)
• Page Start: 20792
• Page End: 20804
• Publication Date: 2019-08-02
• Subjects: Ni/SBA-15 -- CO2 methanation -- Hydrothermal -- SiONi formation; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.07.018
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The comparative study of different hydrothermal treatment techniques (Reflux (R) and Teflon (T)) and without hydrothermal technique (W) towards efficient CO2 methanation over Ni/SBA-15 was discussed. X-ray diffraction (XRD), inductive coupling plasma-atomic emission spectroscopy (ICP-AES), N2 adsorption-desorption isotherms (BET), Fourier transform infrared (FTIR) spectroscopy, UV-vis diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscope – energy dispersion x-ray (SEM-EDX), and transmission electron microscope (TEM) analysis showed that Ni/SBA-15(R) possessed fascinating catalytic properties owing to the highest surface area (814 m 2 /g) and pore diameter (5.49 nm) of SBA-15(R), finest metal particles (17.92 nm), strongest metal-support interaction and highest concentration of basic sites. The efficacy of Ni/SBA-15 towards CO2 methanation was descending as Ni/SBA-15(R) > Ni/SBA-15(T) > Ni/SBA-15(W), implying the outstanding performance of Ni/SBA-15(R) which in parallel with the characterization results. The lowest performance of Ni/SBA-15(W) was due to the poorest properties of support; lowest surface area and pore diameter, largest Ni sizes, weakest metal-support interaction and lowest concentration of basic sites. This study successfully developed fascinating Ni/SBA-15 through the reflux hydrothermal treatment technique for CO2 methanation. Graphical abstract: Image 1 Highlights: SBA-15 preparation: with (Reflux (R) and Teflon (T)) and without (W) hydrothermal. SBA-15(R) exhibited high surface area and large pore diameter. Favorable properties of SBA-15(R) resulted better dispersion and stronger SiONi. Efficacy in CO2 methanation: Ni/SBA-15(R) > Ni/SBA-15(T) > Ni/SBA-15(W).