scholarly journals Open-Pore Two-Dimensional MFI Zeolite Nanosheets for the Fabrication of Hydrocarbon-Isomer-Selective Membranes on Porous Polymer Supports

2016 ◽  
Vol 128 (25) ◽  
pp. 7300-7303 ◽  
Author(s):  
Han Zhang ◽  
Qiang Xiao ◽  
Xianghai Guo ◽  
Najun Li ◽  
Prashant Kumar ◽  
...  
Keyword(s):  
Porous Polymer ◽  
Two Dimensional ◽  
Mfi Zeolite ◽  
Polymer Supports ◽  
Selective Membranes

scholarly journals Open-Pore Two-Dimensional MFI Zeolite Nanosheets for the Fabrication of Hydrocarbon-Isomer-Selective Membranes on Porous Polymer Supports

2016 ◽  
Vol 55 (25) ◽  
pp. 7184-7187 ◽  
Author(s):  
Han Zhang ◽  
Qiang Xiao ◽  
Xianghai Guo ◽  
Najun Li ◽  
Prashant Kumar ◽  
...  
Keyword(s):  
Porous Polymer ◽  
Two Dimensional ◽  
Mfi Zeolite ◽  
Polymer Supports ◽  
Selective Membranes

A Hierarchical MFI Zeolite with a Two‐Dimensional Square Mesostructure

2018 ◽  
Vol 57 (3) ◽  
pp. 724-728 ◽  
Author(s):  
Xuefeng Shen ◽  
Wenting Mao ◽  
Yanhang Ma ◽  
Dongdong Xu ◽  
Peng Wu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Mfi Zeolite

scholarly journals David Colin Sherrington. 5 March 1945—4 October 2014

2017 ◽  
Vol 64 ◽  
pp. 367-385
Author(s):  
Randal W. Richards ◽  
Philip Hodge
Keyword(s):  
Cationic Polymerization ◽  
Scientific Activity ◽  
Early Years ◽  
Porous Polymer ◽  
Valuable Insight ◽  
Research Career ◽  
Polymer Supports ◽  
Reactive Polymers ◽  
Polymer Supported

David Colin Sherrington began life as a Liverpool docker's son and became an internationally recognized authority on reactive polymers and using polymer-supported reagents in novel applications. His research career began at University of Liverpool with his PhD work on the mechanisms of cationic polymerization. From 1972 until retirement in 2010, Strathclyde University was his chief research base. In the very early years he continued with mechanistic and kinetic studies of cationic polymerization, but soon moved to the field of polymer-supported reactions and reagents, to which he devoted the rest of his research career. An important contribution to the direction of his scientific activity was the secondment years he spent at Unilever, where he became involved in polymeric high internal phase emulsions (polyHIPEs). In the following years, he devoted much effort to accurate characterization of these and other porous polymer supports, frequently involving him in learning new techniques (e.g. neutron scattering). An important feature was the use of polymer supports to catalyse oxidation reactions, especially olefin epoxidation. He gained valuable insight into many aspects of his research from the many visiting professorships over his career. He was involved on the editorial board of Reactive Polymers continuously from 1982 until 2010 and he was awarded many honours. His free time was mainly devoted to fishing, particularly for salmon, an activity he shared with his wife and a group of friends for many years. His warmth, intellect and clear interest in the careers of his research students were key components in creating the polymer ‘family’ to which they belonged. His years of retirement were saddened by multiple system atrophy, a devastating illness throughout which he was cared for by Val, his wife.

Constructing two dimensional amide porous polymer to promote selective oxidation reactions

2017 ◽  
Vol 7 (14) ◽  
pp. 3143-3150 ◽  
Author(s):  
Rajiv Khatioda ◽  
Dhrubajyoti Talukdar ◽  
Basanta Saikia ◽  
Kusum K. Bania ◽  
Bipul Sarma
Keyword(s):  
Free Radical ◽  
Selective Oxidation ◽  
Porous Polymer ◽  
Radical Mechanism ◽  
Two Dimensional ◽  
Oxidation Reactions ◽  
Free Radical Mechanism ◽  
Selective Oxidation Reactions ◽  
Organic Catalyst

Rare example of carboxamide linked 2D COF has been synthesized and applied as robust organic catalyst for selective oxidation reactions with no metal add-ons. The reaction undergoes free radical mechanism aided by the conjugated π-cloud and amide functionality present in the COF.

scholarly journals Numerical Investigation of the Effect of Two-Dimensional Surface Waviness on the Current Density of Ion-Selective Membranes for Electrodialysis

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1397
Author(s):  
Andreas Gross ◽  
Arthur Morvezen ◽  
Pedro Castillo Gomez ◽  
Xuesong Xu ◽  
Pei Xu
Keyword(s):  
Surface Roughness ◽  
Current Density ◽  
Stokes Equations ◽  
Membrane Surface ◽  
Ion Concentration ◽  
Limiting Current ◽  
Navier Stokes ◽  
Two Dimensional ◽  
Limiting Current Density ◽  
Selective Membranes

Ion-selective membranes are an important component of electrodialysis stacks for desalination. Manufacturing imperfections or slight inhomogeneity of the material can lead to minute membrane surface imperfections. Two-dimensional solutions of the coupled Poisson–Nernst–Planck and Navier–Stokes equations were sought for a perfectly smooth membrane and for membranes with well-defined small-amplitude harmonic surface roughness. The simulations were carried out with the validated rheoEFoam solver by Pimenta and Alves. In the overlimiting regime, the electric field is strong enough for an electrokinetic instability to occur. The instability leads to disturbance growth and the formation of electro-convection cells, which strongly increase the current density. The present simulations show that with an increasing ion concentration and applied voltage, the instability becomes stronger and the overlimiting regime is reached earlier. The limiting current density shows a noticeable dependence on the wavelength of the surface roughness. When the wavelength of the surface roughness is incommensurate with the wavelength of the naturally occurring instability, the limiting current density is increased. Since production membranes will always have some degree of surface roughness, this suggests that membrane surface treatments which favor certain wavelengths may have an effect on the overall membrane performance.

Highly permeable and antifouling reverse osmosis membranes with acidified graphitic carbon nitride nanosheets as nanofillers

2017 ◽  
Vol 5 (37) ◽  
pp. 19875-19883 ◽  
Author(s):  
Xiang Gao ◽  
Yiming Li ◽  
Xiaolong Yang ◽  
Yanan Shang ◽  
Yong Wang ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
High Performance ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Structural Defects ◽  
Two Dimensional ◽  
Research Attention ◽  
Carbon Nitride Nanosheets ◽  
Selective Membranes

Ultrathin graphitic carbon nitride (gCN) nanosheets, due to their two-dimensional graphene-like structure, regularly distributed triangular nanopores and structural defects on the laminar network, have attracted great research attention in fabricating high-performance water selective membranes.

Native supported membranes: Creation of two-dimensional cell membranes on polymer supports (Review)

2008 ◽  
Vol 3 (2) ◽  
pp. FA12-FA16 ◽  
Author(s):  
Motomu Tanaka ◽  
Fernanda F. Rossetti ◽  
Stefan Kaufmann
Keyword(s):  
Cell Membranes ◽  
Two Dimensional ◽  
Supported Membranes ◽  
Polymer Supports ◽  
Dimensional Cell
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