Polyurethane-based microcapsules containing reactive isocyanate compounds: Study on preparation procedure and solvent replacement

2017 ◽  
Vol 529 ◽  
pp. 750-759 ◽  
Author(s):  
F. Alizadegan ◽  
S. Pazokifard ◽  
S.M. Mirabedini ◽  
M. Danaei ◽  
R. Farnood
Keyword(s):  
Preparation Procedure ◽  
Solvent Replacement

297. Determining the Most Significant Preparation Procedure for the Consistent Analysis of Lead in Soil and Dust

2005 ◽  
Author(s):  
S. Roda ◽  
S. Clark ◽  
P. Succop ◽  
J. Buchanan ◽  
S. Spalding
Keyword(s):  
Preparation Procedure

A Contribution to the Structure Characteristics and Phase Composition of Vanadium-Phosphorus Catalysts Prepared from the VOPO4.xH2O.yH3PO4 Precursor

1992 ◽  
Vol 57 (12) ◽  
pp. 2475-2480 ◽  
Author(s):  
Milan Brutovský ◽  
Štefan Gerej ◽  
Ján Novák ◽  
Lucia Ferdinandyová
Keyword(s):  
Heat Treatment ◽  
Phase Composition ◽  
Ir Spectra ◽  
Metal Cations ◽  
Preparation Procedure ◽  
Final Temperature ◽  
Structure Characteristics ◽  
Heat Treatment Regime ◽  
Condensed Phosphates ◽  
Defective Crystals

Catalysts were prepared from VOPO4.xH2O.yH3PO4 (x = 0.3-2, y = 0.2-0.85) by reduction with SO2 up to a final temperature of 750-800 °C, and activated in a reaction mixture of 1.0-1.4% butane in air up to 500 °C. The structure characteristics and phase composition of the catalysts were found to be affected by the preparation procedure and heat treatment regime. Their diffraction lines and IR spectra revealed that the catalysts from larger and less defective crystals than catalysts which were obtained from the VOHPO4.xH2O.yH3PO4 precursor and activated in the reaction mixture at temperatures up to 500 °C. In the catalysts prepared by the above procedure, the tendency to the formation of phases of higher-condensed phosphates, in particular VO(PO3)2 or even V(PO3)3, increases with increasing n(P):n(V) ratio and is then more pronounced than with vanadium-phosphorus catalysts prepared by other procedures. The tendency to the formation of the catalytically less active condensed phosphates is partly suppressed by the embedding of modifying metal cations (Fe or Cu in this case).

scholarly journals The synthesis of alternating donor–acceptor polymers based on pyrene-4,5,9,10-tetraone and thiophene derivatives, their composites with carbon, and their lithium storage performances as anode materials

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 15044-15053
Author(s):  
Xin Guo ◽  
Qing Yuan ◽  
Chunxia Li ◽  
Hongmei Du ◽  
Jinsheng Zhao ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Anode Materials ◽  
Cycling Performance ◽  
Preparation Procedure ◽  
Lithium Storage ◽  
Donor Acceptor ◽  
Thiophene Derivatives

The preparation procedure and cycling performance of the two polymer composites.

Optimisation of the epi-ready semi-insulating GaAs wafer preparation procedure

Vacuum ◽  
2003 ◽  
Vol 72 (3) ◽  
pp. 217-223 ◽  
Author(s):  
Dominika Sadowska ◽  
Andrzej Gładki ◽  
Krystyna Mazur ◽  
Ewa Talik
Keyword(s):  
Preparation Procedure ◽  
Gaas Wafer

Monitoring influence of chemical preparation procedure on the structure of graphene nanosheets

2012 ◽  
Vol 44 (7-8) ◽  
pp. 1420-1424 ◽  
Author(s):  
Chengbo Shi ◽  
Lei Chen ◽  
Zhiwei Xu ◽  
Yanan Jiao ◽  
Yinglin Li ◽  
...  
Keyword(s):  
Graphene Nanosheets ◽  
Preparation Procedure ◽  
Chemical Preparation

Effect of the Preparation Procedure on the Morphology of Thin TiO2Films and Their Device Performance in Small-Molecule Bilayer Hybrid Solar Cells

2012 ◽  
Vol 4 (11) ◽  
pp. 5997-6004 ◽  
Author(s):  
Eva L. Unger ◽  
Francesca Spadavecchia ◽  
Kazuteru Nonomura ◽  
Pål Palmgren ◽  
Giuseppe Cappelletti ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Preparation Procedure ◽  
Device Performance ◽  
Hybrid Solar Cells
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