Co-reporter:Jianjun Guo, Hui Lou, Liuye Mo, Xiaoming Zheng
Journal of Molecular Catalysis A: Chemical 2010 316(1–2) pp: 1-7
Publication Date(Web):
DOI:10.1016/j.molcata.2009.09.023
Co-reporter:Yongming Luo, Zhaoyin Hou, Rongtao Li, Xiaoming Zheng
Microporous and Mesoporous Materials 2008 Volume 109(1–3) pp:585-590
Publication Date(Web):1 March 2008
DOI:10.1016/j.micromeso.2007.05.008
Well-ordered mesoporous SBA-15 sieves have been rapidly synthesized with the aid of heteropoly acids (abbreviated to HPAs). The promotable role of HPAs on SBA-15 formation has been confirmed by controlling the same synthesis conditions and the hydrothermal stability of corresponding reaction product was found to improve remarkably. The interaction between the EO moieties of template and tungstic or molybdic species (such as octahedral molybdic species), originated from the HPAs dissociation in the syntheses media, was expected to play a crucial role in promoting rapid nucleation and enhancing the tendency for mesoscopic ordering to occur. The synthesis route might be applicable to other nonionic surfactants, liquid acids and silica sources, which should provide promising method for synthesis of a large number of ordered mesoporous sieves with variety structure.
Co-reporter:Jianzhong Guo, Zhaoyin Hou, Jing Gao, Xiaoming Zheng
Fuel 2008 Volume 87(Issue 7) pp:1348-1354
Publication Date(Web):June 2008
DOI:10.1016/j.fuel.2007.06.018
In this research, Ni/SiO2 catalyst was modified with different amount of Gd2O3 and characterized with temperature-programmed desorption of CO2 (CO2-TPD) and NH3 (NH3-TPD), temperature-programmed reduction with H2 (H2-TPR) and X-ray diffraction (XRD). It was found that Gd2O3-modified Ni/SiO2 catalysts possessed higher CO2 adsorption and activation ability due to the formation of surface carbonate species. H2-TPR and XRD characterizations found that the strong interaction among nickel, Gd2O3 and SiO2 took place, which improved the dispersion of Ni. Gd2O3-modified Ni/SiO2 catalysts exhibited higher activity and stability for the combined oxy-CO2 reforming of methane in fluidized-bed reactor. The H2/CO ratio in produced syngas could be controlled via controlling reaction temperature and CO2/O2 ratio in feed.
Co-reporter:Yongming Luo, Zhaoyin Hou, Dingfeng Jin, Jing Gao, Xiaoming Zheng
Materials Letters 2006 Volume 60(Issue 3) pp:393-395
Publication Date(Web):February 2006
DOI:10.1016/j.matlet.2005.08.059
A large number of Ga2O3–Al2O3 nanorods have been synthesized by using nonionic triblock copolymer P123 as structure directing agents. The nanorods have average diameters of 10 ± 1 nm and lengths of 50 ± 5 nm, which has been characterized by N2 adsorption–desorption, XRD, EDX and TEM. The nanorods should provide promising materials for lean-burn NOx reduction.
