Different effects of silane and carboxyled polypropylene on crystal morphology of polypropylene/molecular sieves type 5A composites

2007 ◽  
Vol 106 (1) ◽  
pp. 411-416 ◽  
Author(s):  
Zhi-Ling Ma ◽  
Hua-Ying Guo ◽  
Wei Jia ◽  
Xiao-Jing Yang
Keyword(s):  
Molecular Sieves ◽  
Crystal Morphology

Crystal morphology control of AlPO4-11 molecular sieves by microwave irradiation

2009 ◽  
Vol 113 (2-3) ◽  
pp. 899-904 ◽  
Author(s):  
Yashao Chen ◽  
Xiaolin Luo ◽  
Pengmei Chang ◽  
Shouhua Geng
Keyword(s):  
Microwave Irradiation ◽  
Molecular Sieves ◽  
Crystal Morphology ◽  
Morphology Control

Synthesis and crystal morphology control of AlPO4-5 molecular sieves by microwave irradiation

2014 ◽  
Vol 29 ◽  
pp. 41-47 ◽  
Author(s):  
Wei Yang ◽  
Yu Song ◽  
Ying Mu ◽  
Shangru Zhai ◽  
Yinghuan Fu ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Molecular Sieves ◽  
Crystal Morphology ◽  
Morphology Control

Crystal morphology control of AFI type molecular sieves with microwave irradiation

2004 ◽  
Vol 14 (2) ◽  
pp. 280 ◽  
Author(s):  
Sung Hwa Jhung ◽  
Jong-San Chang ◽  
Young Kyu Hwang ◽  
Sang-Eon Park
Keyword(s):  
Microwave Irradiation ◽  
Molecular Sieves ◽  
Crystal Morphology ◽  
Morphology Control

“Preparation of Single Crystalline Gold Films for ED Studies”

1972 ◽  
Vol 30 ◽  
pp. 634-635
Author(s):  
Joseph D. C. Peng
Keyword(s):  
Crystal Morphology ◽  
Diffraction Theory ◽  
Scattering Matrix ◽  
Vacuum Evaporation ◽  
Gold Films ◽  
Matrix Formulation ◽  
Silver Films ◽  
Single Crystalline ◽  
Grating Pattern ◽  
Stacking Disorder

The relative intensities of the ED spots in a cross-grating pattern can be calculated using N-beam electron diffraction theory. The scattering matrix formulation of N-beam ED theory has been previously applied to imperfect microcrystals of gold containing stacking disorder (coherent twinning) in the (111) crystal plane. In the present experiment an effort has been made to grow single-crystalline, defect-free (111) gold films of a uniform and accurately know thickness using vacuum evaporation techniques. These represent stringent conditions to be met experimentally; however, if a meaningful comparison is to be made between theory and experiment, these factors must be carefully controlled. It is well-known that crystal morphology, perfection, and orientation each have pronounced effects on relative intensities in single crystals.The double evaporation method first suggested by Pashley was employed with some modifications. Oriented silver films of a thickness of about 1500Å were first grown by vacuum evaporation on freshly cleaved mica, with the substrate temperature at 285° C during evaporation with the deposition rate at 500-800Å/sec.

In vitro assembly of 2-D crystals from partially purified EA1 protein secreted by Bacillus anthracis strain Delta Sterne-1

1994 ◽  
Vol 52 ◽  
pp. 276-277
Author(s):  
Mary Beth Downs ◽  
Wilson Ribot ◽  
Joseph W. Farchaus
Keyword(s):  
Cell Wall ◽  
Molecular Sieves ◽  
Cell Envelope ◽  
Single Species ◽  
Supporting Cell ◽  
Surface Layers ◽  
Rabbit Igg ◽  
In Vitro Assembly ◽  
Covalently Linked

Many bacteria possess surface layers (S-layers) that consist of a two-dimensional protein lattice external to the cell envelope. These S-layer arrays are usually composed of a single species of protein or glycoprotein and are not covalently linked to the underlying cell wall. When removed from the cell, S-layer proteins often reassemble into a lattice identical to that found on the cell, even without supporting cell wall fragments. S-layers exist at the interface between the cell and its environment and probably serve as molecular sieves that exclude destructive macromolecules while allowing passage of small nutrients and secreted proteins. Some S-layers are refractory to ingestion by macrophages and, generally, bacteria are more virulent when S-layers are present.When grown in rich medium under aerobic conditions, B. anthracis strain Delta Sterne-1 secretes large amounts of a proteinaceous extractable antigen 1 (EA1) into the growth medium. Immunocytochemistry with rabbit polyclonal anti-EAl antibody made against the secreted protein and gold-conjugated goat anti-rabbit IgG showed that EAI was localized at the cell surface (fig 1), which suggests its role as an S-layer protein.

Rapid, Non-Toxic Synthesis of Beta Zeolites

2018 ◽  
Author(s):  
Felix Hemmann ◽  
Jonathan Hackebeil ◽  
Andreas Lißner ◽  
Florian Mertens
Keyword(s):  
Hydrofluoric Acid ◽  
Molecular Sieves ◽  
Toxic Chemicals ◽  
Lewis Acidity ◽  
Beta Zeolite ◽  
Seeded Growth ◽  
Related Research ◽  
Beta Zeolites ◽  
Growth Method ◽  
Fast Synthesis

Molecular sieves with beta zeolite topology are promising catalysts for various reactions as they exhibits extraordinary Lewis acidity. However, their industrial application and related research in academica is hindered because their synthesis is time consuming and typically involves toxic chemicals as hydrofluoric acid. Therefore, tetraethylammonium fluorid was tested as a non-toxic fluotide source for the synthesis of beta zeolites. In combination with the previously reported nano-seeded growth method, a fast synthesis of beta zeolites only involving non-toxic chemicals was possible. Synthesized zeolites show comparable selectivity in the Bayer-Villinger oxidation as conventional zeolites synthesized with hydrofluoric acid.<br>

THE INFLUENCE OF THE SUPERCOOLING ON THE MECHANICAL PROPERTIES AND CRYSTAL MORPHOLOGY OF WAXY OILS

2016 ◽  
Author(s):  
Diogo Andrade ◽  
Talita Janaina Heller ◽  
Moisés Marcelino Neto ◽  
Cezar Otaviano Ribeiro Negrao
Keyword(s):  
Mechanical Properties ◽  
Crystal Morphology
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