Methacrylyloxypropyl modified inorganic/organic hybrid mesoporous materials have been synthesized via an HCl catalyzed sol gel process in the presence of citric acid (CA) as a nonsurfactant template, which involves a ...Methacrylyloxypropyl modified inorganic/organic hybrid mesoporous materials have been synthesized via an HCl catalyzed sol gel process in the presence of citric acid (CA) as a nonsurfactant template, which involves a combination of 3 (trimethoxysilyl)propyl methacrylate (MSMA) and tetraethoxysilane (TEOS) as precursor species.The CA nonsurfactant is removed by extraction with water, resulting in inorganic/organic hybrid mesoporous materials with high surface area (e.g. 900?m 2·g -1 ) and large pore volume (e.g. 0 55?cm 3·g -1 ).The surface area, pore volume and pore diameter increase slightly with increasing the content of CA.The products were characterized by XRD, N 2 adsorption desorption and FT IR.展开更多
Compound [Co 3(BTC)(HBTC)(H 2BTC)(C 2H 4O 2) 3]·3(DMF)·6(H 3O) was synthesized under mild conditions and its crystal structure was determined by using single crystal X-ray diffraction. The crystal structure ...Compound [Co 3(BTC)(HBTC)(H 2BTC)(C 2H 4O 2) 3]·3(DMF)·6(H 3O) was synthesized under mild conditions and its crystal structure was determined by using single crystal X-ray diffraction. The crystal structure was solved by direct method and refined by full-matrix least-square method. The crystal is monoclinic and belongs to space group Cc with a=2.645 3(5) nm, b= 1.670 4(3) nm, c=1\^821 6(4) nm, β=128.16(3) °, V=6.329(2) nm 3, Z=2 , D c=20.200 Mg/m 3, M r= 1 314.744, μ=10.274 mm -1, F(000) =38 226, GOF=0.99, R=0.094 1, ωR=0.257 3.展开更多
文摘Methacrylyloxypropyl modified inorganic/organic hybrid mesoporous materials have been synthesized via an HCl catalyzed sol gel process in the presence of citric acid (CA) as a nonsurfactant template, which involves a combination of 3 (trimethoxysilyl)propyl methacrylate (MSMA) and tetraethoxysilane (TEOS) as precursor species.The CA nonsurfactant is removed by extraction with water, resulting in inorganic/organic hybrid mesoporous materials with high surface area (e.g. 900?m 2·g -1 ) and large pore volume (e.g. 0 55?cm 3·g -1 ).The surface area, pore volume and pore diameter increase slightly with increasing the content of CA.The products were characterized by XRD, N 2 adsorption desorption and FT IR.
文摘Compound [Co 3(BTC)(HBTC)(H 2BTC)(C 2H 4O 2) 3]·3(DMF)·6(H 3O) was synthesized under mild conditions and its crystal structure was determined by using single crystal X-ray diffraction. The crystal structure was solved by direct method and refined by full-matrix least-square method. The crystal is monoclinic and belongs to space group Cc with a=2.645 3(5) nm, b= 1.670 4(3) nm, c=1\^821 6(4) nm, β=128.16(3) °, V=6.329(2) nm 3, Z=2 , D c=20.200 Mg/m 3, M r= 1 314.744, μ=10.274 mm -1, F(000) =38 226, GOF=0.99, R=0.094 1, ωR=0.257 3.
