Nanjing Tech University

Changshu Yutyrone Advanced Wear Materials Technology Co., Ltd.

Nanjing University of Technology

Nanjing Taiwei Technology Co., Ltd.

Nanjing Carbonde Tech. Co., Ltd.

Opegchem Company, Inc.

Zhuhong Yang

Xiaohua Lu

Changsong Wang

Chang Liu

Wenjun Yao

Xin Feng

Suoying Zhang

Licheng Li

Wei Zhuang

Zheng Li

Hong Liu

YouQin Wu

Yudan Zhu

Tuo Ji

Linghong Lv

Yaxin Zhou

It discloses a vanadium-titanium compound material with high thermal stability and high activity and a preparation method thereof. The vanadium-titanium compound material is mainly composed of vanadium oxide and titanium oxide, where the content of vanadium oxide is 0.5% to 30% by mass of the vanadium-titanium compound material, and the crystal form of titanium oxide in the vanadium-titanium compound material is one of anatase and TiO(B) or a mixture thereof.

Vanadium-titanium compound material with high thermal stability and high activity and preparation method thereof

A process for preparing and separating a monodisperse polyethylene glycol, including: dissolving a starting material of polyethylene glycol into an organic solvent for reaction with a compound represented by general formula I under catalytic action of an alkaline substance, to prepare a mixture of derivatives of polyethylene glycol having different polarities; separating the mixture of derivatives of polyethylene glycol by means of silica gel column chromatography, to obtain a monodisperse derivative of polyethylene glycol; and hydrolyzing the derivative of polyethylene glycol to obtain a monodisperse polyethylene glycol. The starting material is industrially prepared polyethylene glycol with a wide source and low cost, which provides a guarantee for popularization and application of a monodisperse polyethylene glycol product.

Process for preparing and separating monodisperse polyethylene glycol

A method for regenerating a Cu-BTC material includes: impregnating a Cu-BTC adsorbed with guest molecules in an acidic proton solvent or in a steam environment thereof, and filtering the Cu-BTC material, to obtain a solid; impregnating the solid in a non-acidic organic solvent or a steam environment thereof, and finally filtering, washing and drying the solid, to complete the generation of the Cu-BTC material.

Regeneration method for Cu-BTC material

A mesoporous composite titanium oxide, which is composed of a mesoporous titanium oxide, the outside surface and the wall of pores of the mesoporous titanium oxide are modified by inorganic matters; inorganic matter contains at least one element selected from carbon, silicon, sulphur, phosphorus and selenium in an amount of 0.01%-25%, on amount of the element mass, of the mass of said mesoporous composite titanium oxide material; at least one mean pore size of pore distribution of the mesoporous compound titanium oxide material is 3-15 nm, the specific surface area is 50-250 m/g, and the pore volume is 0.05-0.4 cm/g. As a catalyst carrier, the rate of conversion of the hydrodesulfurization reaction of the material reaches as high as 98 percent, and as a lithium ion battery cathode material, the specific capacity of the lithium ion battery cathode material reaches as high as 220 mAh/g.

Mesoporous composite titanium oxide and a preparation method

The methods for preparing Cu-BTC and nano-Cu-BTC are disclosed. An imporous coordination compound Cu(CHO)(HO)is impregnated an organic solvent or a steam environment thereof to obtain Cu-BTC. Cu-BTC is impregnated in an acidic protic solvent environment and filtered to obtain a solid, and the solid is impregnated in a non-acidic organic solvent or a steam environment thereof, centrifuged, washed, and dried, to obtain nano-Cu-BTC.

Method for preparing Cu-BTC and nano-Cu-BTC

A method for preparing titania or precursor thereof with a controllable structure from micropore to mesopore is provided. The method is characterized in that the alkali metal titanate as raw material is reacted for 0.5&#x2dc;72 hours in the wet atmosphere with humidity of 2&#x2dc;100% at temperature of 20&#x2dc;250&#xb0; C., then washed with water or acid, finally performed by air roasting or solvent thermal treatment. The method has advantages that the raw material is easy to be obtained, the conditions and preparation are controllable, the pore structure may be adjusted from micropore to mesopore, crystal mixing and doping are easy, reacting time is short, preparing cost is low, and the said method is suitable for large scale production and so on. The most probable aperture of titanium oxide or precursor thereof with a controllable structure from micropore to mesopore is in the range of 1&#x2dc;20 nm, the pore volume thereof is in the range of 0.05&#x2dc;0.4 cm/g, and the specific surface area thereof is more than 30 m/g. The titania is at least one of anatase-phase titania, TiO(B)-phase titania and rutile-phase titania.

Rapid method for preparing titania or precursor thereof with controllable microporous-mesoporous structure

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Nanjing, China

Zhuhong Yang