The novel type of solid acid catalyst was prepared by treating active white earth with H 3PW 12 O 40 and was applied to dehydration of 1,4 butanediol to tetrahydrafuran by continuous flow type gas solid reaction.Excel...The novel type of solid acid catalyst was prepared by treating active white earth with H 3PW 12 O 40 and was applied to dehydration of 1,4 butanediol to tetrahydrafuran by continuous flow type gas solid reaction.Excellent catalytic activity was found and the yield of tetrahydrafuran could be over 96%.The effect of reaction dynamic conditions on catalytic activity and tetrahydrafuran yield was investigated and the optimum reaction conditions of obtaining tetrahydrafuran was found.展开更多
Two new coordination polymers, [M（phen）（e, a-cis-1, 4-chdc） （H2O）]n （M = Mn^（1）; M = Cu^（2）; chdc = cyclohexanedicarboxylic acid; phen = 1, 10-phenanthroline）, were prepared under hydrothermal conditions a...Two new coordination polymers, [M（phen）（e, a-cis-1, 4-chdc） （H2O）]n （M = Mn^（1）; M = Cu^（2）; chdc = cyclohexanedicarboxylic acid; phen = 1, 10-phenanthroline）, were prepared under hydrothermal conditions and characterized by IR spectra and single crystal X-ray diffraction analysis. X-ray crystal structural analyses reveal that polymer 1 and 2 are isomorphic and belong to the monoclinic system. C20H20MnN2O5, P2 （1） / c, a=1.0235（2） nm, b=0.89134（19） nm, c=2.0466（4） mm,β=99.820（3）, Z=4 for 1; and C20H20CuN2O5, P2（1）/c, a=1.0002（3）nm, b=0.8949（2）nm, c=2.0270（5）nm, β=99.694（3）＇, Z = 4 for 2. In the structures of 1 and 2, the 1, 4-chdc ligand only possesses e, a-cis conformation although there are both cis- and trans-conformations in the raw material.展开更多
文摘The novel type of solid acid catalyst was prepared by treating active white earth with H 3PW 12 O 40 and was applied to dehydration of 1,4 butanediol to tetrahydrafuran by continuous flow type gas solid reaction.Excellent catalytic activity was found and the yield of tetrahydrafuran could be over 96%.The effect of reaction dynamic conditions on catalytic activity and tetrahydrafuran yield was investigated and the optimum reaction conditions of obtaining tetrahydrafuran was found.
文摘Two new coordination polymers, [M（phen）（e, a-cis-1, 4-chdc） （H2O）]n （M = Mn^（1）; M = Cu^（2）; chdc = cyclohexanedicarboxylic acid; phen = 1, 10-phenanthroline）, were prepared under hydrothermal conditions and characterized by IR spectra and single crystal X-ray diffraction analysis. X-ray crystal structural analyses reveal that polymer 1 and 2 are isomorphic and belong to the monoclinic system. C20H20MnN2O5, P2 （1） / c, a=1.0235（2） nm, b=0.89134（19） nm, c=2.0466（4） mm,β=99.820（3）, Z=4 for 1; and C20H20CuN2O5, P2（1）/c, a=1.0002（3）nm, b=0.8949（2）nm, c=2.0270（5）nm, β=99.694（3）＇, Z = 4 for 2. In the structures of 1 and 2, the 1, 4-chdc ligand only possesses e, a-cis conformation although there are both cis- and trans-conformations in the raw material.
