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Lei Y.,Chongqing University | Lei Y.,Chongqing Three Gorges University | Lei B.-A.,Chongqiong Kaixian Mingyue Junior Middle School | Yang Q.-W.,Chongqing University | And 3 more authors.
Xiandai Huagong/Modern Chemical Industry

The characteristics and major treatment technologies of sewage sludge are briefly introduced. The development of catalytic wet oxidation technology (wet air oxidation, catalytic wet air oxidation and catalytic wet hydrogen peroxide oxidation) and different catalysts are introduced, especially the applications in sewage sludge. The drawbacks and hotspots of the catalytic wet oxidation technology for treatment of sewage sludge are pointed out. The research trends in the future are proposed as well. ©, 2015, China National Chemical Information Center. All right reserved. Source

Lei Y.,Chongqing Three Gorges University | Yang Q.,Chongqing Three Gorges University | Chen G.,Chongqing Three Gorges University | Chen G.,Chongqing Institute of Environmental Science Research | Yang Q.,Chongqing Institute of Environmental Science Research
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry

Two new dioxomolybdenum(VI) complexes [MoO2(Bhbz) (CH3OH)] (1) and [MoO2(Cnbz)(CH3OH)] (2) with the benzohydrazone ligands H2Bhbz and H2Cnbz derived from 5-chlorosalicylaldehyde with 4-nitrobenzohydrazide and 3-bromosalicylaldehyde with 2-hydroxybenzohydrazide, respectively, have been synthesized and structurally characterized by physicochemical methods and single crystal X-ray determination. The crystal of (1) crystallizes in triclinic space group P-1, with a = 8.0014(9), b = 9.6294(10), c = 11.4204(12) Å, = 89.193(2), β = 87.833(2), γ = 89.110(2)°, V = 879.11(16) Å3, Z = 2, R 1 = 0.0464, wR 2 = 0.1185, S = 1.051. The crystal of (2) crystallizes in monoclinic space group P21/c, with a = 7.4108(3), b = 18.7901(7), c = 12.6293(5) Å, β = 104.4850(10)°, V = 1702.72(12) Å3, Z = 4, R 1 = 0.0236, wR 2 = 0.0576, S = 1.061. X-ray analysis indicates that the structures of both complexes are similar to each other. The molybdenum atom in each complex is in an octahedral coordination environment, constructed by two oxo groups and NO2 donor set of the ligand, and one methanol O atom. The complexes have effective catalytic property for the oxidation of several olefins. © 2014 Copyright Taylor and Francis Group, LLC. Source

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