Beijing University of Chemical Technology , abbreviated as BUCT, colloquially known in Chinese as Beihua or Huada , is one of the outstanding universities in mainland China. BUCT was founded in 1958 and is affiliated with the Ministry of Education. As one of China's key institutions of higher learning, especially in chemistry studies, a member university of the Project 211, BUCT has developed from an institution of scientific specialties to a comprehensive university with a core curriculum of science, economic management, languages and other liberal arts. Wikipedia.
Beijing University of Chemical Technology | Date: 2014-04-10
A method for synthesizing a crystalline molecular sieve SSZ-13, characterized in that the method comprises bringing the following raw materials into contact in water under a crystallization condition: at least one tetravalent silicon source, at least one trivalent aluminium source, at least one alkali metal compound, choline cations and/or SSZ-13 seed crystals, and hydroxide ions. The method avoids using benzyl trimethyl quaternary ammonium ions (BzTMA^(+)) or N,N,N-trimethyl-1-amantadine cations as structure-directing agents, and obtains high-quality crystal molecular sieve SSZ-13. Due to the use of a low-cost nontoxic structure-directing agent, the method has low production price by employing a low-cost nontoxic template, and can be popularized for application.
Yang P.,Shaanxi Normal University |
Yang W.,Beijing University of Chemical Technology
Chemical Reviews | Year: 2013
Researchers discuss chemoselective phototransformation of C-H bonds on organic polymeric materials and related high-tech applications. New demands on polymer surfaces have led chemists to develop chemical systems that can directly convert C-H bonds on these soft organic material surfaces into functional groups or polymer chains in facile, efficient, specific, and selective ways. Several methods have been established for C-H transformations in molecules based on the use of different catalysts such as transition metal complexes, enzymes, and pure organic compound-catalyzed coupling methods. Examples based on photochemistry have emerged to achieve chemoselective activation of C-H bonds, which have become the emphasis of extensive discussion and summary. Top-down techniques such as photochemistry, which facilitate the preparation of gradient surfaces, have also found a wide range of applications in high-tech fields.
Chilwee Power Co. and Beijing University of Chemical Technology | Date: 2016-04-27
Provided is a method for recycling a lead oxide-containing waste material, comprising: (1) contacting the lead oxide-containing waste material with a desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750C so as to convert the lead-containing components in the filtration residue into lead oxide; (3) contacting the product obtained from step (2) with an alkaline solution so as to dissolve the PbO therein, and then performing a solid-liquid separation to obtain a PbO-alkaline solution; and (4) crystallizing the PbO-alkaline solution from step (3) to obtain PbO crystals and an alkaline filtrate. The method can reduce the energy consumption.
Chilwee Power Co. and Beijing University of Chemical Technology | Date: 2016-04-27
Provided is a method for directly recovering lead oxide used for a lead-acid battery negative electrode from waste lead paste. The method comprises: (1) contacting waste lead paste with a barium-containing desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; and (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750C so as to convert the lead-containing components in the filtration residue into lead oxide. In the method, the direct recovery of a lead oxide raw material applicable to a lead-acid battery negative electrode from waste lead paste is achieved by quantitatively replenishing a barium sulphate additive in the process of desulphuration, thereby substantially decreasing the recovery cost and energy consumption, and improving the comprehensive utilization of waste lead paste.
Lei Z.,Beijing University of Chemical Technology |
Dai C.,Beijing University of Chemical Technology |
Chen B.,Beijing University of Chemical Technology
Chemical Reviews | Year: 2014
The solubility of CO2 (carbon dioxide), SO2, CO, N2, O2, and H2 in ionic liquids (ILs) was studied. The results showed that the solubility data of gases except for CO 2 in ILs are still limited and should be complemented especially at low temperatures. Solubility data of mixed gases in ILs are also scarce, which can provide fundamental knowledge for developing the actual processes because one gas solubility may be significantly influenced by the presence of another gas. Predictive molecular thermodynamic models are still needed to be advanced so as to improve the prediction accuracy and thus reduce the amount of experimental work in measuring the solubility data due to numerous combinations of cations and anions and extreme operating conditions. The solubility of gases in ILs may be improved by combing the advantages of ILs with other new types of materials, such as metal-organic frameworks (MOFs), not limited to other commercially available ILs and organic solvents.
Jiang H.,Beijing University of Chemical Technology |
Xu F.-J.,Beijing University of Chemical Technology
Chemical Society Reviews | Year: 2013
Functional polymer brushes have been utilized extensively for the immobilization of biomolecules, which is of crucial importance for the development of biosensors and biotechnology. Recent progress in polymerization methods, in particular surface-initiated atom transfer radical polymerization (ATRP), has provided a unique means for the design and synthesis of new biomolecule-functionalized polymer brushes. This current review summarizes such recent research activities. The different preparation strategies for biomolecule immobilization through polymer brush spacers are described in detail. The functional groups of the polymer brushes used for biomolecule immobilization include epoxide, carboxylic acid, hydroxyl, aldehyde, and amine groups. The recent research activities indicate that functional polymer brushes become versatile and powerful spacers for immobilization of various biomolecules to maximize their functionalities. This review also demonstrates that surface-initiated ATRP is used more frequently than other polymerization methods in the designs of new biomolecule-functionalized polymer brushes. © 2013 The Royal Society of Chemistry.
Song Y.-F.,Beijing University of Chemical Technology |
Tsunashima R.,Yamaguchi University
Chemical Society Reviews | Year: 2012
Polyoxometalates (POMs) are a subset of metal oxides with unique physical and chemical properties, which can be reliably modified through various techniques and methods to develop sophisticated materials and devices. In parallel with the large number of new crystal structures reported in the literature, the application of these POMs towards multifunctional materials has attracted considerable attention. This critical review summarizes recent progress on POM-based molecular and composite materials, and particularly highlights the emerging areas that are closely related to surface, electronic, energy, environment, life science, etc. (171 references). © The Royal Society of Chemistry 2012.
Beijing University of Chemical Technology | Date: 2016-11-02
A high-gravity rotating bed device, comprising a motor (10), a rotor (20) and a housing (30). The rotor (20) and the motor (10) are entirely arranged within the housing (30). A load-bearing plate (31) is provided within the housing (30). The load-bearing plate (31) divides the housing (30) into a reaction chamber (32) and a balance chamber (33). The motor (10) is arranged within the balance chamber (33). A transmission shaft of the motor (10) passes through the load-bearing plate (31) and is fixedly connected to the rotor (20) arranged within the reaction chamber (32). A gas inlet (34), a gas outlet (35), a liquid inlet (36) and a liquid outlet (37) are arranged on the housing (30). An externally communicating pipeline (331) is arranged on the balance chamber (33). Also disclosed is an application of the present high-gravity rotating bed device under high-pressure conditions in operations such as mixing, transferring and reacting.
Beijing University of Chemical Technology and Beijing Kbd Pharmaceuticals Co. | Date: 2016-06-29
The present invention relates to the compounds of the formulae (I) and (I-1) and the process for preparing the same, uses of the compounds for the treatment of diseases associated with platelet aggregation and in the manufacture of a medicament for the treatment of diseases associated with platelet aggregation, and relates to a pharmaceutical composition and a pharmaceutical formulation containing the compounds, wherein the definitions of R_(1), R_(2), R_(3 )and R_(2a )in the formulae are the same as those in the description.
Beijing University of Chemical Technology | Date: 2016-04-08
A method of treating or preventing human or mammalian cancer and tumor including administering to a patient or an animal in need thereof a pharmaceutical composition, a health product, or a food additive, including 1-(alkylsulfinyl)-2-isothiocyanatoalkyl-1-alkene.