TY - JOUR
T1 - Hydrothermal synthesis of hierarchical titanium silicalite-1 using single template
AU - Chen, Li
AU - Wang, Yi Meng
AU - He, Ming Yuan
PY - 2011/5
Y1 - 2011/5
N2 - Hierarchical nano-crystalline TS-1 can be directly synthesized using tetrapropylammonium hydroxide (TPAOH) as single template in the presence of a 'seed' gel. The hierarchical nano-crystalline TS-1 was characterized by scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, UV-Vis diffuse reflectance spectroscopy and nitrogen adsorption-desoprtion. Compared with the conventional TS-1, the hierarchical nano-crystalline TS-1 contained an additional porosity including supermicro/mesopores, which attributed to the interstitial voids existing between the nanocrystals. The secondary porosity in the TS-1 material provided an enhanced external surface area and high mesopore volume in favor of fast diffusion of both reactants and products, which resulted in an enhanced activity in the epoxidation of bulky molecules cyclohexene using aqueous H 2O2 solution as oxidant.
AB - Hierarchical nano-crystalline TS-1 can be directly synthesized using tetrapropylammonium hydroxide (TPAOH) as single template in the presence of a 'seed' gel. The hierarchical nano-crystalline TS-1 was characterized by scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, UV-Vis diffuse reflectance spectroscopy and nitrogen adsorption-desoprtion. Compared with the conventional TS-1, the hierarchical nano-crystalline TS-1 contained an additional porosity including supermicro/mesopores, which attributed to the interstitial voids existing between the nanocrystals. The secondary porosity in the TS-1 material provided an enhanced external surface area and high mesopore volume in favor of fast diffusion of both reactants and products, which resulted in an enhanced activity in the epoxidation of bulky molecules cyclohexene using aqueous H 2O2 solution as oxidant.
KW - A. Microporous materials
KW - B. Sol-gel chemistry
KW - D. Catalytic properties
UR - https://www.scopus.com/pages/publications/79952988015
U2 - 10.1016/j.materresbull.2011.01.015
DO - 10.1016/j.materresbull.2011.01.015
M3 - 文章
AN - SCOPUS:79952988015
SN - 0025-5408
VL - 46
SP - 698
EP - 701
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 5
ER -