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Yang X.,Soochow University of China | Li L.,Key Laboratory for Green Chemical Process of Ministry of Education | Yan F.,Soochow University of China
Sensors and Actuators, B: Chemical | Year: 2010

A simple strategy for synthesizing well-defined polypyrrole (PPy) nanotube, which can be used for loading silver nanoparticles without prior PPy nanotube functionalization under mild conditions is demonstrated. It is found that Ag nanoparticles could uniformly decorate onto the PPy nanotube surface in the presence of polyvinylpyrrolidone (PVP) to form PPy/Ag composite nanotubes. Transmission electron microscopy (TEM) images give evidence of the decoration of Ag nanoparticles on the surface of PPy nanotubes. Fourier transform infrared (FTIR) spectra reveal the structure of PPy/Ag composite nanotubes and X-ray diffraction (XRD) directly shows the presence of Ag nanoparticles. The as-prepared PPy/Ag composite nanotubes are applied to the detection of ammonia vapor. Compared with PPy nanotubes, the introduction of metal onto PPy nanotubes is effective in promoting the chemiresistor response to ammonia. Moreover, the response behaviors of PPy/Ag composite nanotubes depend on the distribution of Ag nanoparticles in the nanocomposites. © 2010 Elsevier B.V. All rights reserved. Source


Wang W.,Wuhan Institute of Technology | Wang C.,Key Laboratory for Green Chemical Process of Ministry of Education | Zhou F.,Key Laboratory for Green Chemical Process of Ministry of Education | Qin Y.,Key Laboratory for Green Chemical Process of Ministry of Education | And 2 more authors.
Advanced Materials Research | Year: 2012

The numeric method of the total quantity of ineffective reflux on tower top of binary batch distillation of total reflux and top accumulation under N +1→∞ and ideal operation conditions is introduced. Energy consumption of binary batch distillation under total reflux and top accumulation is analyzed using the calculated results of examples, and a conclusion that, for the separation task that the low-efficiency energy consumption is large in proportion to its total energy consumption, its total energy consumption is visibly reduced by making a reduction in the mixing level of flowing liquid in top vessel. Source


Xu L.,Key Laboratory for Green Chemical Process of Ministry of Education | Liu S.,Key Laboratory for Green Chemical Process of Ministry of Education
Advanced Materials Research | Year: 2011

The magnesium hydroxide (MH) whiskers were modified with 3-(trimethoxysilyl) propyl methacrylate (γ-MPS) followed by in situ copolymerization of styrene. The high impact polystyrene (HIPS)/MH composites were prepared by melt compounding of HIPS with untreated MH whiskers and modified MH whiskers (MMH), respectively. Their morphological structure and rheological properties were characterized by scanning electron microscopy and capillary rheometer. The results show that the HIPS/MH composites are a shear-thinning non-Newtonian, its apparent viscosities are bigger than those of the HIPS melt. With increasing MH loading, apparent viscosity of HIPS/MH composites increase. The PS encapsulated on MH whiskers surface enhanced the interface adhesion between inorganic particles and HIPS matrix and improved the flow abilities of the HIPS/MH composites melts. © (2011) Trans Tech Publications, Switzerland. Source


Xu L.,Key Laboratory for Green Chemical Process of Ministry of Education | Liu S.,Key Laboratory for Green Chemical Process of Ministry of Education | Li X.,Central China Normal University
Advanced Materials Research | Year: 2011

In this paper, vinylated magnesium hydroxide (MH) nanosheets were prepared with 3-(trimethoxysilyl) propyl methacrylate (γ-MPS) and pristine MH nanosheets, then the MH/polymer hybrid nanoparticles were prepared by in-situ emulsion copolymerization of vinylated MH nanosheets and styrene (St) monomer and styrene/butyl acrylate (St/BA) comonomer. The morphology, thermal stability and chemical structure of the final products were investigated in detail with transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier-transform infrared spectra (FTIR). The TEM results showed that the core-shell structure of MH/Polymer nanoparticles with MH-cores and Polymer-shell was formed. © (2011) Trans Tech Publications, Switzerland. Source


Shen X.,Wuhan Institute of Technology | Shen X.,Key Laboratory for Green Chemical Process of Ministry of Education | Xiao Y.,Wuhan Institute of Technology | Xu L.,Wuhuan Engineering Corporation | And 4 more authors.
Shiyou Huagong/Petrochemical Technology | Year: 2010

Laboratory equipment which simulated the industrial decarburization from medium temperature shift gas through N-methyldiethanolamine (MDEA) absorption was established by application of a series of improvement measures. Solubility of CO2 in 4.28mol/L MDEA aqueous solution was determined under the conditions of abstractions of hydrogen and CO2 in combination of medium temperature shift unit with pressure swing adsorption (PSA) unit. The experiment showed that the determined CO2 solubility fit well with literature data, and made up for data base about the CO2 solubility in the temperature range from 70°C to 120°C and pressure range from 131kPa to 422kPa. The experimental results could provide useful design parameters for abstractions of hydrogen and CO2 in combination of medium temperature shift unit with PSA unit. Source

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