期刊
PURE AND APPLIED CHEMISTRY
卷 92, 期 4, 页码 545-556出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/pac-2019-0806
关键词
direct synthesis; dry reforming of methane; ICGC-8; mesoporous; metal nitride; TiN-SBA-15
资金
- Science Achievement Scholarship of Thailand (SAST) [CU-56-912-AM]
- International Research Integration: Chula Research Scholar, Ratchadaphiseksomphot Endowment Fund
- 90th Anniversary of Chulalongkorn University Fund
A novel approach of titanium nitride (TiN) incorporated into SBA-15 framework was developed using one-step hydrothermal synthesis method. TiN contents up to similar to 18 wt% were directly dispersed in a synthetic gel under a typical strong acidic condition. The physico-chemical characteristics and the surface properties were investigated by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), N-2 adsorption-desorption, field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray spectroscopy (EDS), wavelength dispersive X-ray fluorescence (WDXRF) and CO2-temperature programmed desorption (CO2-TPD). The results indicated that the highly ordered mesostructured was effectively maintained with high specific surface area of 532-685 m(2)g(-1). The basicity of the modified SBA-15 increased with rising TiN loading. These modified materials were applied as a support of Ni catalyst in dry reforming of methane (DRM). Their catalytic behavior possessed superior conversions for both CO2 and CH4 with the highest H-2/CO ratio (0.83) as well as 50 % lower carbon formation, compared to bare SBA-15 support.
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