scholarly journals Design and synthesis of soft porous crystal based upon organic cages for applications in gas separation

2020 ◽  
Author(s):  
Zhifang Wang ◽  
Zhenjie Zhang
Keyword(s):  
Gas Separation ◽  
Design And Synthesis ◽  
Porous Crystal

scholarly journals Soft Porous Crystal Based upon Organic Cages That Exhibit Guest-Induced Breathing and Selective Gas Separation

2019 ◽  
Vol 141 (23) ◽  
pp. 9408-9414 ◽  
Author(s):  
Zhifang Wang ◽  
Nivedita Sikdar ◽  
Shi-Qiang Wang ◽  
Xia Li ◽  
Meihui Yu ◽  
...  
Keyword(s):  
Gas Separation ◽  
Porous Crystal

Rational design and synthesis of ultramicroporous metal-organic frameworks for gas separation

2020 ◽  
Vol 423 ◽  
pp. 213485 ◽  
Author(s):  
Ting Wang ◽  
En Lin ◽  
Yun-Lei Peng ◽  
Yao Chen ◽  
Peng Cheng ◽  
...  
Keyword(s):  
Gas Separation ◽  
Rational Design ◽  
Metal Organic Frameworks ◽  
Design And Synthesis ◽  
Metal Organic

scholarly journals Investigation of Duplex Brass Membranes with Metallography, Permeability and Treatments: Work-Hardening, Annealing and Quenching

2021 ◽  
Vol 5 (4) ◽  
pp. 76
Author(s):  
Sofia Kavafaki ◽  
George Bomis ◽  
Kyriaki Drakaki ◽  
Athanasios Varoutoglou ◽  
Konstantinos Kiourtzidis ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Gas Separation ◽  
Work Hardening ◽  
Materials Science ◽  
Low Permeability ◽  
Brass Alloy ◽  
Alloy Structure ◽  
Separation Processes ◽  
Porous Crystal ◽  
Inorganic Porous Materials

This paper consists of the fabrication and investigation of metal membranes and the study of their behaviour and applications in gas separation processes. The scope is to produce and characterize the porous crystal structure of brass alloy (standardization: DIN 17660) membranes and measure their permeability with helium as a penetrant medium. Another part of this study is to alter the brass alloy’s structure throughout metallurgical treatments and investigate how the permeability is allied to the structure’s alteration. This work merges the knowledge and technology of inorganic porous materials science in metallurgy. The novelty of the current research resides in the process to alternate the brass alloy structure throughout metallurgical treatments and how it is allied to the permeability of the membrane, which is of interest to be investigated. The results of the research are analysed and compared conducting the final inferences. All metallurgical treatments resulted in low permeability values when compared to a non-treated specimen. Specifically, the drop in permeance ranged from 76 up to 99.56%. It is noted that consecutive treatments contributed to even further decreases.

Macromolecular Design and Synthesis of Polymers from Silicon- Containing Norbornenes for Membrane Gas Separation

INEOS OPEN ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 39-54 ◽  
Author(s):  
M. V. Bermeshev ◽  
◽  
E. Sh. Finkelshtein ◽  
◽  
Keyword(s):  
Gas Separation ◽  
Membrane Gas Separation ◽  
Design And Synthesis

A SEM/TEM examination of a ceramic membrane

1986 ◽  
Vol 44 ◽  
pp. 682-683
Author(s):  
C.E. Voegele-Kliewer ◽  
A.D. McMaster ◽  
G.W. Dirks
Keyword(s):  
Electron Microscopy ◽  
Gas Separation ◽  
Ceramic Membrane ◽  
Hydrogen Iodide ◽  
Separation Processes ◽  
Corning Glass ◽  
Gas Transport Properties ◽  
Porous Microstructure ◽  
Microscopy Techniques ◽  
The Relationship

Materials other than polymers, e.g. ceramic silicates, are currently being investigated for gas separation processes. The permeation characteristics of one such material, Vycor (Corning Glass #1370), have been reported for the separation of hydrogen from hydrogen iodide. This paper will describe the electron microscopy techniques applied to reveal the porous microstructure of a Vycor membrane. The application of these techniques has led to an increased understanding in the relationship between the substructure and the gas transport properties of this material.

Prostatic Acid Phosphatase (PAP) Differentiated Ultracytochemically from Lysosomal Acid Phosphate in the Rat with a PAP/Specific Substrate, Phosphorylcholine

1975 ◽  
Vol 33 ◽  
pp. 450-451
Author(s):  
W. Allen Shannon ◽  
José A. Serrano ◽  
Hannah L. Wasserkrug ◽  
Anna A. Serrano ◽  
Arnold M. Seligman
Keyword(s):  
Acid Phosphatase ◽  
Phosphate Buffer ◽  
Prostatic Carcinoma ◽  
Prostatic Acid Phosphatase ◽  
Chemotherapeutic Agents ◽  
Specific Substrate ◽  
Acid Phosphate ◽  
Lysosomal Acid ◽  
Design And Synthesis ◽  
New Chemotherapeutic Agents

During the design and synthesis of new chemotherapeutic agents for prostatic carcinoma based on phosphorylated agents which might be enzyme-activated to cytotoxicity, phosphorylcholine, [(CH3)3+NCH2CH2OPO3Ca]Cl-, has been indicated to be a very specific substrate for prostatic acid phosphatase (PAP). This phenomenon has led to the development of specific histochemical and ultracytochemical methods for PAP using modifications of the Gomori lead method for acid phosphatase. Comparative histochemical results in prostate and kidney of the rat have been published earlier with phosphorylcholine (PC) and β-glycerophosphate (βGP). We now report the ultracytochemical results.Minced tissues were fixed in 3% glutaraldehyde-0.1 M phosphate buffered (pH 7.4) for 1.5 hr and rinsed overnight in several changes of 0.05 M phosphate buffer (pH 7.0) containing 7.5% sucrose. Tissues were incubated 30 min to 2 hr in Gomori acid phosphatase medium (2) containing 0.1 M substrate, either PC or βGP.

Tailoring microstructures of materials through biomimetics

1993 ◽  
Vol 51 ◽  
pp. 500-501
Author(s):  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Chemical Properties ◽  
Design And Synthesis ◽  
Structure Sensitive ◽  
Macro Scale ◽  
Methods Of Synthesis ◽  
Successive Level ◽  
Engineering Materials ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Synthesis Of Materials

Biomimetics involves investigation of structure, function, and methods of synthesis of biological composite materials. The goal is to apply this information to the design and synthesis of materials for engineering applications.Properties of engineering materials are structure sensitive through the whole spectrum of dimensions from nanometer to macro scale. The goal in designing and processing of technological materials, therefore, is to control microstructural evolution at each of these dimensions so as to achieve predictable physical and chemical properties. Control at each successive level of dimension, however, is a major challenge as is the retention of integrity between successive levels. Engineering materials are rarely fabricated to achieve more than a few of the desired properties and the synthesis techniques usually involve high temperature or low pressure conditions that are energy inefficient and environmentally damaging.In contrast to human-made materials, organisms synthesize composites whose intricate structures are more controlled at each scale and hierarchical order.

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