Yajing WU

Nanjing University of Technology, Nan-ching, Jiangsu Sheng, China

Are you Yajing WU?

Claim your profile

Publications (2)1.3 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Various conditions were investigated in detail for the novel organic template-free static hydrothermal synthesis of SUZ-4 zeolite in the presence of seeds. The obtained samples were characterized by XRD (X-ray diffraction), SEM (scanning electron microscope), TG (thermal gravimetric analysis), ICP (inductively coupling plasma) elemental analysis, nitrogen sorption isotherm and surface area. The results show that pure SUZ-4 zeolites with high crystallinity are obtained in a broad window of synthesis conditions: seed mass concentration 0.2%–2%, SiO2/Al2O3 molar ratio 21–25, KOH/SiO2 molar ratio 0.33–0.43, H2O/SiO2 molar ratio 7.14–38.1, aging time 24 h, crystallization temperature 160 °C, and crystallization time 6–10 d. Also, crystallinity and size of the rod-like SUZ-4 zeolite crystals are found to alter with the conditions.
    Chinese Journal of Chemical Engineering. 01/2014; 22(1):120–126.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Inorganic-organic hybrids were prepared by combining Schiff base complexes of manganese with silicotungstic acid (SiW). The composition and structure of the hybrid L1-Mn-SiW (L1: N,N′-disalicylidene-1,6-hexanediamine) were characterized by infrared spectroscopy and thermogravimetry. They were used as solid catalysts in the esterification of phosphoric acid with equimolar lauryl alcohol to monoalkyl phosphate ester (MAP). Over the L1-Mn-SiW catalyst, the yield and selectivity for MAP were 93% and > 98%, respectively, at the optimal reaction conditions. The catalyst exhibited excellent recoverability during a six-cycle test without any observable change of the catalyst structure. A base-catalyzed reaction route was proposed.
    Chinese Journal of Catalysis 01/2010; 31(2):156-162. · 1.30 Impact Factor