Zhejiang University of Technology is located in the city of Hangzhou, Zhejiang Province. It is considered one of the top industrial universities in mainland China and the second largest university in Zhejiang Province after the most comprehensive university - Zhejiang University.Engineering, especially chemical and biological engineering, is its strongest element. During the 1980s it made an effort to become a comprehensive technological university instead of a technological college. It keeps a close and broad relationship to industry.It is a typical technical university of the new generation in China. It followed the trend during the 1980s and 1990s of Chinese technical institutes changing from the soviet specialized style into a much more comprehensive style. Wikipedia.
Zhejiang University of Technology and Zhejiang Chiral Medicine Chemicals Co. | Date: 2016-08-25
The disclosure provides a nitrilase from Arabis alpina, which belongs to genus Arabis, family brassicaceae. The disclosure further provides the encoding gene, vector, recombinant bacterial strain, and the application in the manufacturing of (S)-3-cyano-5-methylhexanoic acid. The wet resting cells containing nitrilase Aa-Nit can kinetically resolve racemic IBSN at 1.2 M with a 42% conversion rate in 15 hr and >99% ee value. The disclosure provides a regio- and stereoselective method for the preparation of (S)-3-cyano-5-methylhexanoic acid. This method provides an atom economical, mild, environmental friendly industrial method to manufacture (S)-3-cyano-5-methylhexanoic acid.
Gong X.,Zhejiang University of Technology
Physical Chemistry Chemical Physics | Year: 2013
The control of surface properties such as the morphology, roughness, stiffness, and wettability of polyelectrolyte multilayers was carried out using poly(diallyldimethylammonium chloride) (PDADMAC) and poly(4-styrenesulfonic acid-co-maleic acid, 1 : 1 SS : MA) sodium salt (PSSMA 1 : 1) as the building blocks via adjusting the assembly pH value. We found that the surface roughness of the multilayers increased with increasing assembly pH value, and that the morphology was quite different at various assembly pH values when PSSMA was assembled as the final layer. However, the surface roughness and morphology of the multilayers (PDADMAC as the final layer) showed no apparent change at various assembly pH values. Interestingly, the stiffness of the PSSMA/PDADMAC multilayers could be tuned. Nanoindentation measurements by SFM showed that the hardness of the multilayers was very different at various pH values when PSSMA was the outermost layer. Conversely, the hardness of the multilayers remained unchanged regardless of the pH when PDADMAC was the outermost layer. The water contact angle hysteresis (the difference between the advancing and receding contact angles) of the multilayers was largely affected by both surface roughness and surface hydrophilic groups which could also be tuned by assembly pH. © 2013 the Owner Societies.
Pei Z.,Zhejiang University of Technology
Information Sciences | Year: 2013
In the age of mass customization with service oriented manufacturing, more and more production lines are designed according to the frequently changing customer demands. In order to improve upon the flexible production lines, rapid assessment tools have to be developed and implemented. Since uncertain information and incomplete knowledge coexist inevitably in the rapid assessment process, in literature, fuzzy multi-attribute decision making models are established to handle them simultaneously. However, very few papers have paid adequate attention to the decision maker's rationality, i.e., the optimism level of the decision maker. Therefore, in this paper, a series of novel rational decision making models are developed in dealing with the multi-attribute assessment problems, which include incomplete preference information. And the evaluating data are expressed under interval-valued intuitionistic fuzzy settings. Compared with the traditional distance-based method, correlation coefficient between each alternative and the ideal solution with (α, β) optimism level is applied. Furthermore, confidence level and cognitive dissonance of the decision maker are included in the overall decision making process in order to constitute a more comprehensive evaluation of the flexible production line. Besides, several insights are revealed concerning the levels of optimism and the weights of production line attributes. Finally, a three-stage empirical study is conducted to validate the proposed models, compare them with the traditional distance-based methods, and the result shows that our approach is not only valid but also outperforms the traditional methods. © 2012 Elsevier Inc. All rights reserved.
Zhang F.,Zhejiang University of Technology |
Zhang F.,University of Cambridge |
Spring D.R.,University of Cambridge
Chemical Society Reviews | Year: 2014
The use of coordinating moieties as directing groups for the functionalisation of aromatic carbon-hydrogen (C-H) bonds has become an efficient strategy for the selective construction of new carbon-carbon (C-C) and carbon-heteroatom (C-X) bonds in arenes. However many directing groups cannot be easily removed/modified from the products after C-H functionalisation, thus limiting the structural diversity of the products. This limitation can be overcome by employing removable/modifiable or traceless directing groups which can be easily attached to the starting materials and detached from the products. In this tutorial review, we give an overview of recent advances in this emerging field which have dramatically increased the synthetic applicability of C-H functionalisation processes. This journal is © the Partner Organisations 2014.
Gong X.,Zhejiang University of Technology
RSC Advances | Year: 2014
In general, techniques of particle arrays on polyelectrolyte multilayers involve complex and inefficient steps. Here, we present a simple yet robust method for fabricating ordered two-dimensional nanoparticle arrays on polyelectrolyte multilayers via water induced flow of multilayer films. The process is easy and repeatable without the requirement of complicated surface preparation or chemical modification. By droplet evaporation of silica or other functional nanoparticle solutions on a patterned PDMS stamp, nanoparticle arrays on polyelectrolyte multilayer film surfaces will occur when the PDMS stamp contacts with polyelectrolyte multilayers. This work provides a facile and efficient approach to fabricate colloidal nanoparticle or other functional nanoparticle arrays on polyelectrolyte multilayers which are potentially useful for sensor materials, biomaterials and so on. This journal is © the Partner Organisations 2014.
Zhou C.H.,Zhejiang University of Technology
Applied Clay Science | Year: 2011
Remarkable strategies for constructing clay-based catalysts are critically overviewed. Clay minerals provide distinct nanometer-scaled layers and interlayers for engineering them as active catalysts. As such, strategic design and preparation has led to a variety of catalysts, including ion exchanged catalysts, acidic activated clay catalysts, intercalated catalysts, pillared clay catalysts, clay-supported catalysts, inorganic and inorganic-organic composites and hybrids, and hierarchically structured solid catalysts. In many cases, the combination of several protocols was implemented so that the resultant materials functioned with synergetic effects. Electric, optical, photonic, and magnetic functionalities can also be endowed on the resulting clay-based catalysts. Synthetic clay minerals and their derivatives, including layered double hydroxides, have peculiar features in purity and composition to be designed and transformed to catalysts, showing a complementary relationship with their naturally-occurring counterparts. The clay-based heterogeneous catalysts have many practical and potential applications in green catalysis. A review of the literature indicates that precise determination of microstructure and in situ observation of reactions at the molecular and atomic levels remain essential tasks. Prospects for the preparation of clay-based catalysts and their catalytic applications are briefly discussed. © 2011 Elsevier B.V.
Chen S.Y.,Zhejiang University of Technology
IEEE Transactions on Industrial Electronics | Year: 2012
Kalman filters have received much attention with the increasing demands for robotic automation. This paper briefly surveys the recent developments for robot vision. Among many factors that affect the performance of a robotic system, Kalman filters have made great contributions to vision perception. Kalman filters solve uncertainties in robot localization, navigation, following, tracking, motion control, estimation and prediction, visual servoing and manipulation, and structure reconstruction from a sequence of images. In the 50th anniversary, we have noticed that more than 20 kinds of Kalman filters have been developed so far. These include extended Kalman filters and unscented Kalman filters. In the last 30 years, about 800 publications have reported the capability of these filters in solving robot vision problems. Such problems encompass a rather wide application area, such as object modeling, robot control, target tracking, surveillance, search, recognition, and assembly, as well as robotic manipulation, localization, mapping, navigation, and exploration. These reports are summarized in this review to enable easy referral to suitable methods for practical solutions. Representative contributions and future research trends are also addressed in an abstract level. © 2011 IEEE.
Zhejiang University of Technology and Hangzhou Sailong Chemical Industry Co. | Date: 2014-09-24
A carbon-separated ultrafine nano WC material and a method of preparing the same as well as a use thereof, wherein the carbon-separated ultrafine nano WC material is prepared by a method comprising the following steps: (1) a solution of a tungsten source in deionized water is added into a solution prepared from ethanol, concentrated ammonia and a surfactant, wherein the tungsten source is ammonium metatungstate, sodium tungstate or tungsten chloride, and the surfactant is sodium dodecyl benzene sulfonate, ammonium hexadecyl trimethyl bromide or P123; resorcinol is added after intimate agitation; formaldehyde is then added after intimate agitation; and then agitation at room temperature is continued for 8-28 h to produce a mixed solution; (2) the mixed solution is subjected to hydrothermal reaction, and a mixed polymer is obtained after drying; and (3) the mixed polymer is carburized at a high temperature in CO atmosphere to produce the carbon-separated ultrafine nano WC material. The WC material can make the WC particles remain stable in a high-temperature process and avoid secondary agglomeration. It may be used as an electrocatalyst in electrocatalytic reduction of nitro group, and as a support for preparing a supported platinum catalyst. The resultant supported platinum catalyst may be used in anode catalysis in a methanol fuel cell.
Zhejiang University of Technology | Date: 2015-02-13
The present invention discloses an oxime ether acetate compound containing a phenylpyridine moiety of formula (I), whose preparation method is as follows: (1) mixing a compound of formula (IV), a compound of formula (V), an alkaline substance A, a palladium catalyst and a solvent A; subjecting the mixture to a reaction at the temperature ranging from 10 C. to the reflux temperature for 0.5-20 hours to obtain a reaction solution A; post-treating the solution A to obtain a compound of formula (II); (2) mixing the compound of formula (II), an alkaline substance B, a phase transfer catalyst and a solvent B; subjecting the mixture to a reaction at the temperature ranging from 10 C. to the reflux temperature for 0.1-2 hours; then adding a compound of formula (III), continuing to react at the temperature ranging from 10 C. to the reflux temperature for 0.5-20 hours to obtain a reaction solution B; and post-treating the solution B to obtain the compound of formula (I). The oxime ether acetate compound containing a phenylpyridine moiety of formula (I) can be used for weeding in crops.
Zhejiang University of Technology | Date: 2015-10-26
A device and a process for producing undecylenic acid methyl ester using methyl ricinoleate as raw material are provided. The device comprises a feed pump, a raw material pre-heater, a microwave catalytic reactor, a microwave generator, a temperature controller and an infrared sensor, a condenser, a product tank and a discharge pump. The feed pump is connected with the raw material pre-heater, which is connected with the inlet of the microwave catalytic reactor. The outlet of the microwave catalytic reactor is connected with the condenser, which is connected to the product tank and the discharge pump. The microwave catalytic reactor is located in the microwave generator, which is connected with the temperature controller and the infrared sensor. The process is as follows: high-purity methyl ricinoleate, used as the raw material, is converted to methyl undecene and heptaldehyde by microwave-assisted pyrolysis process, followed by isolation and purification to produce methyl undecene.