Experimental investigation, modeling and scale-up of hydrophilic vapor permeation membranes: Separation of azeotropic dimethyl carbonate/methanol mixtures

2013 ◽  
Vol 118 ◽  
pp. 862-878 ◽  
Author(s):  
Johannes Holtbruegge ◽  
Matthias Wierschem ◽  
Simon Steinruecken ◽  
Dorothea Voss ◽  
Lubow Parhomenko ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Dimethyl Carbonate ◽  
Scale Up ◽  
Vapor Permeation

EXPERIMENTAL INVESTIGATION, SCALE-UP AND MODELING OF DROPLET SIZE DISTRIBUTIONS IN TURBULENT MULTIPHASE JETS

2020 ◽  
Vol 32 (2) ◽  
pp. 113-136 ◽  
Author(s):  
Simeon Pesch ◽  
Rebecca Knopf ◽  
Anahita Radmehr ◽  
Claire B. Paris ◽  
Zachary M. Aman ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Droplet Size ◽  
Scale Up ◽  
Size Distributions ◽  
Droplet Size Distributions

Electric Field and Spinning Performance in Needleless Electrospinning

2014 ◽  
Vol 1048 ◽  
pp. 26-30 ◽  
Author(s):  
Xin Wang ◽  
Yuan Zhao ◽  
Hao Wang ◽  
Guang Ming Cai
Keyword(s):  
Experimental Investigation ◽  
Electric Field ◽  
Scale Up ◽  
Key Factors ◽  
Needleless Electrospinning ◽  
Modeling Analysis ◽  
Experimental Parameters ◽  
Spun Fiber ◽  
The Relationship

Different spinnerets can be used to generate needleless electrospinning with the potential to scale up the production of nanofibers. However, the electrospinning performance, normally refers to the quality of the as-spun fiber and the production rate, is dramatically different from different spinnerets. This study focuses on the electric field of different spinnerets under the same experimental parameters so as to understand the key factors that affect the electrospinning performance of upward needleless electrospinning. Modeling analysis suggested that the electric field could be further concentrated by optimizing the geometry of spinneret. Experimental investigation on needleless electrospinning from different spinnerets proved that the electrospinning performance was improved greatly with the optimization of the electric field of spinneret. Understanding of the relationship between electric field and spinning performance would benefit the design and development of needleless electrospinning.

scholarly journals An Efficient Protocol for the Production of Pymetrozine via a New Synthetic Strategy

2018 ◽  
Vol 42 (8) ◽  
pp. 434-438
Author(s):  
Qifan Zhou ◽  
Fangyu Du ◽  
Yajie Shi ◽  
Wenqiang Liu ◽  
Dongdong Liu ◽  
...  
Keyword(s):  
Dimethyl Carbonate ◽  
Scale Up ◽  
Total Yield ◽  
Synthetic Method ◽  
Synthetic Route ◽  
Environmental Friendliness ◽  
Synthetic Strategy

A practical four-step synthesis of pymetrozine is reported, starting from a green chemical dimethyl carbonate and using the key intermediate methyl (E)-1-(2-oxopropyl)-2-(pyridin-3-ylmethylene)hydrazine-1-carboxylate. The main advantages of the route include inexpensive starting materials, environmental friendliness, short synthetic route, easy-to-use synthetic method and acceptable overall yield. A scale-up experiment was carried out to provide pymetrozine with 99.84% purity in 53.2% total yield.

scholarly journals Experimental investigation of defect-assisted and intrinsic water vapor permeation through ultrabarrier films

2016 ◽  
Vol 87 (3) ◽  
pp. 033902 ◽  
Author(s):  
Hyungchul Kim ◽  
Ankit Kumar Singh ◽  
Cheng-Yin Wang ◽  
Canek Fuentes-Hernandez ◽  
Bernard Kippelen ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Water Vapor ◽  
Vapor Permeation ◽  
Water Vapor Permeation
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